![Encoding vs Decoding](\"https://s3-us-west-2.amazonaws.com/courses-images/wp-content/uploads/sites/4052/2019/04/08194049/CommunicationProcessModel1.jpg\"){kind=link}
![\"Creative](\"https://i.creativecommons.org/l/by-sa/4.0/88x31.png\")
This\nwork is licensed under a\nCreative\nCommons Attribution-ShareAlike 4.0 International License.
UNIX is not Multics
\nMultics = Multiplexed Information and Computer Service
\nUNIX = Uniplexed Information and Computing Service
\nThe name \'UNIX\' is a pun on the name \'Multics\'. Multics was entirely too large and complicated to be useful so the boys at Bell Labs cooked up something smaller, less complicated, and easier to use.
\nThis wiki helped me emulate UNIXv5.
\nAnd this one helped me emulate UNIXv7.
\nThese guys host ancient systems accessible via guest accounts over ssh.
\n\n\n\"Cool, but useless.\"
\n
I know almost nothing about Multics and I\'m not sure if it\'s even worth learning. This is about UNIX, not Multics. Maybe I\'ll come back to it.
\nWhen I think of \"UNIX\", I do not think of the trademark. Instead, I think of the Unix philosophy. and the general design principles, interface, and behavior of a UNIX system.
\nA better way of thinking about \"UNIX\" is as something \"POSIX-like\" rather than \"AT&T\'s commercial UNIX\". Example: although Linux and GNU are overly complicated, they pass the duck test for being a UNIX. Pedigree or not, you know a nix when you see one.
\nAlso, when I say \"UNIX\", I mean \"Free UNIX\". I have no interest in proprietary implementations that only exist for the purpose of restricting users and disempowering/discouraging sysadmins from becoming self-reliant.
\nSo what is the philosophy?
\nAnd additionally:
\nUNIX is a multiuser time sharing networked operating system, running as an always online service. A UNIX system is a single mainframe computer running an operating system designed for multiple users to access concurrently over the network, equally (depending on implementation) sharing resources amongst the active users.
\nIn a traditional network setup, there is one mainframe UNIX machine with multiple dumb terminals connected to it over the network. None of the users touch the mainframe physically. Instead, they interact with it exclusively through their own dumb terms. These dumb terminals have minimal or no computing power of their own because all of the actual computation takes place on the mainframe. Built in networking is a given.
\nAs for the actual software running on the mainframe, it\'s quite simple to visualize. A Unix system is a flexible but organized stack of concepts, each depending on the concept below, all working together for the sole purpose of enabling the end user to play video games and watch videos online.
\n / user applications \\\n / shells \\\n / daemons \\\n / file systems \\\n / kmods/drivers \\\n / syscalls \\\n / kernel \\\n/ hardware \\\nIn order to fully explain why UNIX is sublime, I will start from the bottom and work my way upward. Before I discuss the shell, I will explain the multiuser aspects of the system. Then, after a long arduous journey of verbosity, explain how to actually use the thing.
\nThe kernel is something the user rarely interacts with. It abstracts all the hard parts away from the user. No more poking random memory addresses to load a program from tape.
\nIn order to support multiple users, resource sharing was implemented. When a user\'s process requests CPU time, it\'s put into a rotational queue along with the other requests for CPU time. Round robin style concurrency is one of the easiest to implement but most modern systems use a weighted model that prioritizes processes owned by specific users. Memory and disk space are typically assigned hard limits to prevent system crashes. \"Ask your sysadmin if you need more resources.\"
\nAbstracting memory management from users is almost necessary in a multitasking system. The kernel must be the arbiter of all. The most interesting thing about virtual memory is that it doesn\'t actually need to be a RAM stick, but can be a swap partition on a disk or even a remote cloud provider if you\'ve actually lost your mind. This type of flexibility improves system stability. Instead of a kernel panic when memory runs out, the kernel can de-prioritize nonessential or idle processes by sending them to swap space.
\nNo more fragmented memories! The kernel maintains a page table that maps logical locations to physical locations. Instead one continuous chunk of memory, the kernel divides memory into small sections called \"pages\". When allocating memory, the kernel might not give a process continuous pages. The advantage of a paged memory scheme further enables multiuser computing. Example: When you have a large program like a web browser open, the pages that contains the unfocused tabs can be swapped out to disk without stalling the entire browser.
\nWhen a process requests a resource, it sends a syscall to the kernel. The kernel then responds to the system call. This allows for privilege separation. Does your web browser need direct access to all memory? What about all files? Do we even want to write assembly every time we want to access a file? Syscalls are dual purpose: abstraction and security.
\nKernel modules are dynamic \"extensions\" that give the kernel new features (typically hardware support). The ability to dynamically load/unload modules as hardware changes increases uptime because it means a new kernel doesn\'t need to be compiled, installed, and booted into every time we plug in a different peripheral.
\nA UNIX filesystem is hierarchical. Each directory contains files or other directories, each with a specific purpose. This type of organization makes it very easy to navigate and manage a system. Each child directory inherits ownership and permissions unless otherwise specified (see Access Control).
\nIn order to visualize this, I imagine a tree-like structure descending from the root directory, /. The tree(1) program shows this type of hierarchy.
The idea behind virtual filesystems is, again, abstraction. Using the concept of a virtual file system, multiple disks can be presented to the user and programmer as a single unified filesystem. This means mounted local disks, NFS shares, and even the contents of a CDROM are presented as if the files contained therein are \"just on the big hard drive\".
\nAdditionally, using bind mounts, a directory can be mounted onto another directory as if it were just another filesystem.
\nThe final interesting thing about virtual filesystems is the concept of a ramdisk: mounting a section of memory so that it can be used as if it was an ordinary directory. <--Shoot foot here.
\nWell, almost everything is presented as if it were a file. This greatly simplifies programming.
\nPrime example: /dev/urandom is a random entropy generator presented as a file, making it very simple for a programmer to implement seeded RNG in a program.
Another example: The kernel translates mouse input into a data stream that can be opened as a file. The programmer only needs to read from /dev/mouse0 instead of writing hundreds of mouse drivers for a clicky GUI.
Exercise 1: Try running this command then wiggling your mouse:
\n# Linux\n$ sudo cat /dev/input/mouse0\n\n# FreeBSD\n$ sudo cat /dev/sysmouse\nYet another example: the TTY is just a file. You can even print it to a text file using setterm(1) on Linux.
Exercise 2:
\n[user@fedora ~]$ sudo setterm --dump 3\n[user@fedora ~]$ cat screen.dump\n\nFedora Linux 36 (Workstation Edition)\nKernel 5.18.5-200.fc36.x86_64 on an x86_64 (tty3)\n\nfedora login: root\nPassword:\nLast login: Sat Jul 30 14:34:20 on tty3\n[root@fedora ~]# /opt/pfetch/pfetch\n ,'''''. root@fedora\n | ,. | os Fedora Linux 36 (Workstation Edition)\n | | '_' host XXXXXXXXXX ThinkPad T490\n ,....| |.. kernel 5.18.5-200.fc36.x86_64\n.' ,_;| ..' uptime 20d 22h 40m\n| | | | pkgs 3910\n| ',_,' | memory 6522M / 15521M\n '. ,'\n '''''\n\n[root@fedora ~]#\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n[user@fedora ~]$\nYet another way of \"mounting\" a file or directory to another file or directory is linking. There are two types of links: hard links and symbolic links.
\nOn UNIX, files are indexed by inodes (index nodes). Using links, we can make \"shortcuts\" to files.
\nHard linking adds a \"new index\" to a file. They share an inode. If the original file is removed, the file persists in storage because the secondary file created by a hard link still exists. Think \"different name, same file\"
\nSymlinks are like pointers. A symlink points to the original file instead of the inode. If you remove the original file, the symlink breaks because it points to a file that points to an inode rather than simply pointing to an inode.
\nUsing links, we can make files more convenient to access as if we are \"copying\" files without actually copying files.
\nOn a UNIX system, file extensions are arbitrary. UNIX determines file type by reading the file headers. The file tells you exactly what type of file it is (just read it). The entire system does not break when a file extension doesn\'t match the expected contents of the file.
\nExtensions only matter when you wilfully associate with the microsoft users leaving issues on your software repos. \"Not my OS, not my issue, it\'s open source so fork it if you don\'t like it\"
\nSee also: Multitasking.
\nExercise 3: attempt to use Windows like a multiuser operating system and get back to me when you have realized that any and all claims made by microsoft about how their \"multi user enterprise system\" is in any way capable of competing with a genuine multi-user UNIX system are false advertising.
\nA multiuser system needs a way to manage users and categorize them for access control purposes. Every user has a single user account and belongs to 0 or more groups. Sorting users into groups at the time of account creation makes is significantly easier than granting/revoking permissions user-by-user. Additionally, using something like rctl(8) on FreeBSD allows a systems administrator to allocate resources to specific users, groups, or login classes (like groups).
On a UNIX system, every process is owned by a user. In the case of a service, the process is owned by a daemon account. Daemon accounts have limited permissions and make it possible to run persistent services as a non-root user.
\nSince UNIX was designed to be a multiuser system, access control is required. We know about users, we know about groups, but what about permissions?
\nThere are three types of operations that can be done to a file: read, write, and execute. Who can the admin grant these permissions to? The Owner, the Group, and the Other (all). This type of access control is called discretionary access control because the owner of the file can modify files at their own discretion.
\nAll UNIX utilities worth using use 3 data streams:
\nThe shell is how a user actually interacts with a UNIX system. It\'s a familiar interface that allows a human user to interact with a computer using real human language.
\nExplicitly telling the computer to do is infinitely less agonizing than dealing with a computer that tries to do what it thinks you want it to do by interpreting input from a poorly designed, overly engineered interface.
\nThe shell, in addition to being an interactive interface, is also scriptable. Although math is a struggle, shell scripting is a fairly simple way of automating tasks. Taping together interoperable commands you already know makes everything easier. My favorite aspect about writing POSIX shell scripts is knowing that shell is a strongly, statically typed language where the only datatype is string.
\nProblem that are difficult or messy to solve in shell usually mean it\'s time to write another small C program for your specific needs. Adding the new program into the shell pipeline is trivial.
\nPipes, the concept that makes UNIX so scriptable. A shell utility that follows the UNIX philosophy will have a non-captive interface, write uncluttered data to stdout, read from stdin, and error to stderr. The | pipe character instructs programs to send their stdout to the next stdin in the pipeline instead of printing to the terminal.
All standard command line utilities are interoperable and can be easily attached like building blocks. \"Meta programming\" has never been easier.
\nPipes make it so that every UNIX program is essentially a filter. Sure, you could just use awk, but I prefer shell.
\nUNIX is a non-simple modular operating system designed for 1970s big iron mainframes but we love it too much to let it go. Compared to minimal hobbyist operating systems, UNIX is BIG. Compared to commercial operating systems, free UNIX is small. Maybe slightly more than minimum viable but the papercuts are mild enough to forgive.
\nThis script was trimmed to serve as an example.
The three options shown (email, jop, dots) demonstrates, how to list items with case statements:
\nThe text files created after the archive serves as an item list
\nwith current permissions.
tar --directory= /path/to/directory/ --create --file INSERT_ARCHIVE_NAME.tar /path/to/file;
#!/bin/bash\n#License: GPL v3\n# This program is free software: you can redistribute it and/or modify\n# it under the terms of the GNU General Public License as published by\n# the Free Software Foundation, either version 3 of the License, or\n# (at your option) any later version.\n#\n# This program is distributed in the hope that it will be useful,\n# but WITHOUT ANY WARRANTY; without even the implied warranty of\n# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n# GNU General Public License for more details.\n#\n# You should have received a copy of the GNU General Public License\n# along with this program. If not, see <https://www.gnu.org/licenses/>.\n\n#Name: getoverhere.sh\n#Purpose:\n#Version: beta 0.07\n#Author: SGOTI (Some Guy On The Internet)\n#Date: Sat 29 Jan 2022 02:19:29 AM EST\n\n#variables:\nVAR_TBALL=\nVAR_TARGET=\nVAR_JUMP=\nVAR_VALUE=\n\n#start:\ncat << "EOT01"\nOptions:\n email |"${HOME}/.thunderbird/"\n jop |"${HOME}/Documents/joplin"\n dots |"${HOME}/.bashrc .vimrc .bash_aliases"\nEOT01\n\necho -e "What do you want to backup? : \\c."\nread VAR_VALUE\n\ncase ${VAR_VALUE} in\n "email" )\nVAR_TBALL="INSERT_EMAIL_NAME$(date +%m-%d-%Y).tar.gz"\nVAR_TARGET="msgFilterRules.dat"\nVAR_JUMP="${HOME}/.thunderbird/*.default-release/ImapMail/imap.mail.yahoo.com/"\n echo -e "Grabbing INSERT_EMAIL_NAME...\\n"\ntar -C ${VAR_JUMP} --create --file ${VAR_TBALL} --gzip ${VAR_TARGET}\n sleep 1\n\nVAR_TBALL="INSERT_EMAIL_NAME$(date +%m-%d-%Y).tar.gz"\nVAR_TARGET="msgFilterRules.dat"\nVAR_JUMP="${HOME}/.thunderbird/*.default-release/ImapMail/imap.gmail.com/"\n echo -e "Grabbing INSERT_EMAIL_NAME...\\n"\ntar -C ${VAR_JUMP} --create --file ${VAR_TBALL} --gzip ${VAR_TARGET}\n sleep 1\n\nVAR_TBALL="EMAIL_ARCHIVES$(date +%m-%d-%Y).tar.gz"\nVAR_TARGET="Mail/"\nVAR_JUMP="${HOME}/.thunderbird/*.default-release/"\n echo -e "Grabbing email EMAIL_ARCHIVES...\\n"\ntar -C ${VAR_JUMP} --create --file ${VAR_TBALL} --gzip ${VAR_TARGET}\n echo -e "Creating List for ${VAR_TBALL}...\\n"\nls -lhAR --group-directories-first ${VAR_JUMP}${VAR_TARGET} > EMAIL_ARCHIVES$(date +%m-%d-%Y).txt\n sleep 1\n\nVAR_TBALL="THUNDERBIRD_CALENDER$(date +%m-%d-%Y).tar.gz"\nVAR_TARGET="calenders/"\nVAR_JUMP="${HOME}/Documents/"\n echo -e "Grabbing email THUNDERBIRD_CALENDER...\\n"\ntar -C ${VAR_JUMP} --create --file ${VAR_TBALL} --gzip ${VAR_TARGET}\n echo -e "Creating List for ${VAR_TBALL}...\\n"\nls -lhAR --group-directories-first ${VAR_JUMP}${VAR_TARGET} > THUNDERBIRD_CALENDER$(date +%m-%d-%Y).txt\n sleep 1\n\nVAR_TBALL="THUNDERBIRD_ADDRESS_BOOK$(date +%m-%d-%Y).tar.gz"\nVAR_TARGET="address-book/"\nVAR_JUMP="${HOME}/Documents/"\n echo -e "Grabbing ${VAR_TARGET}...\\n"\ntar -C ${VAR_JUMP} --create --file ${VAR_TBALL} --gzip ${VAR_TARGET}\n echo -e "Creating List for ${VAR_TBALL}...\\n"\nls -lhAR --group-directories-first ${VAR_JUMP}${VAR_TARGET} > THUNDERBIRD_ADDRESS_BOOK$(date +%m-%d-%Y).txt\n sleep 1\n\nVAR_TBALL="THUNDERBIRD_ALL$(date +%m-%d-%Y).tar.gz"\nVAR_TARGET=".thunderbird/"\nVAR_JUMP="${HOME}/"\n echo -e "Grabbing ${VAR_TARGET}...\\n"\ntar -C ${VAR_JUMP} --create --file ${VAR_TBALL} --gzip ${VAR_TARGET}\n echo -e "Creating List for ${VAR_TBALL}...\\n"\nls -lhAR --group-directories-first ${VAR_JUMP}${VAR_TARGET} > THUNDERBIRD_ALL$(date +%m-%d-%Y).txt ;;\n\n "jop" )\nVAR_TBALL="JOPLIN$(date +%m-%d-%Y).tar.gz"\nVAR_TARGET="joplin/"\nVAR_JUMP="${HOME}/Documents/"\n echo "Grabbing ${VAR_TARGET}"\ntar -C ${VAR_JUMP} --create --file ${VAR_TBALL} --gzip ${VAR_TARGET}\n sleep 1\n echo -e "Creating List for ${VAR_TBALL}...\\n"\nls -lhAR --group-directories-first ${VAR_JUMP}${VAR_TARGET} > JOPLIN$(date +%m-%d-%Y).txt ;;\n\n "dots" )\nVAR_TBALL="dots$(date +%m-%d-%Y).tar.gz"\nVAR_TARGET=".bashrc .vimrc .bash_aliases"\nVAR_JUMP="${HOME}/"\n echo "Grabbing ${VAR_TARGET}"\ntar -v -C ${VAR_JUMP} --create --file ${VAR_TBALL} --gzip ${VAR_TARGET} ;;\n\n * )\n echo "Good Heavens..." ;;\nesac\nexit;\ntar --extract --directory= /path/to/directory/ --file /path/to/file;cp -v -t /path/to/directory *08-05-2022.tar.gz; command is used totar --extract example to keep things short and sweet.VAR_TBALL="EMAIL_ARCHIVES*.tar.gz"\nVAR_JUMP="${HOME}/.thunderbird/*.default-release/"\n echo -e "Restoring EMAIL_ARCHIVES...\\n"\ntar --extract --directory= ${VAR_JUMP} --file ${VAR_TBALL}\n echo -e "EMAIL_ARCHIVES restored.\\n"\nThe Tin Foil Hat often worn in the belief or hope that it shields the brain from threats such as electromagnetic fields, mind control, and mind reading.
\nFCC Caller ID Spoofing info: Spoofing is when a caller deliberately falsifies the information transmitted to your caller ID display to disguise their identity.
\nFCC Call Blocking info: Call blocking is a tool used by phone companies to stop illegal and unwanted calls from reaching your phone. A second annual FCC report released in June 2021 found that many voice service providers and third-party analytics companies are improving their call blocking and labeling services and use new data to better detect robocalls. Billions of unwanted calls to American consumers are being blocked each year.
\nThe PinePhone Pro Explorer Edition is aimed at Linux developers with an extensive knowledge of embedded systems and/or experience with mobile Linux.
\nTime-based one-time password (TOTP) is a computer algorithm that generates a one-time password (OTP) that uses the current time as a source of uniqueness. As an extension of the HMAC-based one-time password algorithm (HOTP), it has been adopted as Internet Engineering Task Force (IETF) standard RFC 6238.
\nMatrix is an open standard for interoperable, decentralised, real-time communication over IP.
\nPassword Managers: Used by Some Guy On The Internet.
\nBitwarden
\nKeePassXC
\nThere were no new hosts this month.\n
\n\nNote to Volunteers: Comments marked in green were read in the last\nCommunity News show and should be ignored in this one.
These are comments which have been made during the past month, either to shows released during the month or to past shows.\nThere are 4 comments in total.
\nThere are 3 comments on\n3 previous shows:
\nUpdated on 2023-08-08 21:22:18
\nThere is 1 comment on 1 of this month\'s shows:
\n\nPolicy decisions surrounding HPR are taken by the community as a whole. This\ndiscussion takes place on the Mail List which is open to all HPR listeners and\ncontributors. The discussions are open and available on the HPR server under\nMailman.\n
\nThe threaded discussions this month can be found here:
\nhttps://lists.hackerpublicradio.com/pipermail/hpr/2023-August/thread.html\n\n\nWith the kind permission of LWN.net we are linking to\nThe LWN.net Community Calendar.
\nQuoting the site:
\nThis is the LWN.net community event calendar, where we track\nevents of interest to people using and developing Linux and free software.\nClicking on individual events will take you to the appropriate web\npage.\n\n
\nThere were no new hosts this month.\n
\n\nNote to Volunteers: Comments marked in green were read in the last\nCommunity News show and should be ignored in this one.
These are comments which have been made during the past month, either to shows released during the month or to past shows.\nThere are 5 comments in total.
\nThere are 3 comments on\n3 previous shows:
\nUpdated on 2023-08-10 23:18:26
\nThere are 2 comments on 2 of this month\'s shows:
\n\nPolicy decisions surrounding HPR are taken by the community as a whole. This\ndiscussion takes place on the Mail List which is open to all HPR listeners and\ncontributors. The discussions are open and available on the HPR server under\nMailman.\n
\nThe threaded discussions this month can be found here:
\nhttps://lists.hackerpublicradio.com/pipermail/hpr/2023-August/thread.html\n\n\nWith the kind permission of LWN.net we are linking to\nThe LWN.net Community Calendar.
\nQuoting the site:
\nThis is the LWN.net community event calendar, where we track\nevents of interest to people using and developing Linux and free software.\nClicking on individual events will take you to the appropriate web\npage.\n\n
In this episode, I talk about getting in to the field of cybersecurity or moving up in the field. I also talk about how keyboards could keep malware from going Boom on your system.
\nTry This One Weird Trick Russian Hackers Hate
\nhttps://krebsonsecurity.com/2021/05/try-this-one-weird-trick-russian-hackers-hate/
Fake VM Sandbox artifacts - not talked about in this episode
\nhttps://github.com/NavyTitanium/Fake-Sandbox-Artifacts
Has your password been involved in a breach?
\nhttps://haveibeenpwned.com/
Realtime Global Cyber Attack Map
\nhttps://threatmap.checkpoint.com/
In this week\'s episode, I chat with R. Brady Frost about the little plumber vs the gigantic rock. Then we move in to a discussion about the fallacy of stupid users with some great stories of stupid things done by those of us who really should know better. The moral of the story, is that we are all human and nothing will ever change that. Instead, we need to be prepared for when humans are human.
\nI\'ve been meaning to put down my thoughts about SystemD for the HPR\ncommunity for some while, so here goes.
\nI want to say that I am not a SystemD hater. When SystemD was a hot\ntopic of debate, many became irrational over it, but I want to start by\nsaying that I don\'t think it\'s a bad technology. I think it is a rather\ngood technology. I just don\'t want it on my personal computer. So I\nwould like to run things down in this order: what is it (as in, what is\nit really,) what makes it a good technology, why I don\'t want it now\n(but might later,) and a few tips for you if you decide that you don\'t\nwant it currently.
\nSystemD Is not an init system. SystemD includes an init system.\nSystemD Init was faster than SysVInit, but SystemD Init isn\'t the\nfastest init system, and SysVInit now has a parallelization helper, at\nleast on Debian.
\nSo, if SystemD Init is not SystemD, than what is SystemD? To\nunderstand this we must first understand something about Linux. Linux\noperates under a model where there are root processes, and there are\nuser processes. These two kinds of processes are usually called\n\"layers.\" SystemD is actually a third layer, that can be called a system\nlayer. So when SystemD is added to a Linux system, that changes the\nsystem so that there are three layers, a root layer, a user layer, and a\nsystem layer. As such, you now ask SystemD to set how the system runs.\nThis is why SystemD includes things like an init system, because if you\nwant to change what the system is running, you ask SystemD to change it.\nSystemD then messages an appropriate system to implement the change,\nlike messaging its init system to bring up or bring down a system\ndaemon. Once you play out this in your head a bit, you really realize\nthat SystemD acts more like a message passing system in this regard.
\nSo why do I say SystemD is a good technology? Because this can\nstandardize system control. Without SystemD a fleet of computers becomes\nlike individual fingerprints or unique snowflakes. If you manage many\ncomputers, as many professional IT people do, you want them to all run\nthe same, all have the same profiles and general configurations. So if\nyou have a bunch of computers you are running, you can run a lot more if\nthey are all run the same way. If your job requires you to run 10,000\nwebservers, you want them to run identically because it is impossible to\nkeep an understanding of 10,000 unique configurations in a human\nhead.
\nSystemD really shines in its support of virtualization as well. So\nto speak of servers, I used to run an email server for a few friends.\nEach of us had a userid and number as unix users. The mapping of unix\nuserids and postfix userids can get confusing when it gets big. Thanks\nto SystemD\'s virtualization work, you can actually put a service like\nemail into a namespace situation so that it has only the users root and\nthe daemon user id (like \"postfix\"), so SystemD greatly enhances\nsecurity for server installations. This might help explain its\ndominance in linux distributions that have been traditionally\nserver-centric, such as debian and redhat.
\nSo why don\'t I don\'t want it? Well, I\'ve been doing a lot of talking\nabout professional computer work and corporate work environments, but I\nuse a \"Personal Computer\" as a hobby. I\'ve been out-of-industry for\ndecades now. And when I say \"Personal Computer\" I\'m not talking a\nhardware specification, rather I\'m talking about \"This is my personal\ncomputer where I do things my way, as opposed to my work computer where\nI do things my companies way\". Dear listener, please remember that I did\nthe first community show contribution to HPR, and my topic was about\npersonalization. For me, a hobbyist interested in operating system\nexperimentation, I don\'t want a system layer, I want a traditional\nunix-like system that operates on a two-layer model and does things my\nway, nobody else\'s way.
\nSo, what advice can I give to those who don\'t want SystemD now? Well,\nrecently I\'ve left Debian. Debian, you see, supports init system\ndiversity, but as you now know dear listener, that is different than\nbeing without SystemD. You may have heard that SystemD is\nlinux-specific, that is to say that it runs only on linux, not anything\nlike a BSD system or a Windows system. But you may be curious to know\nthat it is also Gnu-libC specific. Which means that the C compiler must\nuse GNU\'s libC standard library. Thus, if you have a system built around\nthe Musl C standard library like Alpine or Void, or a system like\nAndroid that runs on the Bionic C Standard library, you wont have a\nSystemD system. I\'m personally learning Void as its package manager\nsupports both binary and a ports collection much like the BSD\'s. But\nthat is what I\'m doing on my personal computer, I leave you in the\nfreedom to do things your way on your personal computer!
\n\n',73,99,0,'CC-BY-SA','systemd,linux',0,0,1), -(3904,'2023-07-20','How to make friends',2861,'This topic is being actively researched. Not for production use.','Show notes
\nNo clear mark of when friendship starts
\noften feels \"right\" when mutual
\nto some people friendship is a persistent state. once you have it, it's forever unless explicitly dissolved.
\nfor other people, it's something requiring maintenance. arguable this suggests that there are degrees of friendship, based on when you last spoke to one another.
\ndegrees of friendship also suggests progression. friend → close friend → best friend.
\nfriendship requires communication.
\nstart by communicating in some way that makes the other person feel not unpleasant
\nyou're not supposed to target a friend. this can be a frustrating rule, because if you're trying to make a friend, you have to target somebody, but the general consensus is that you're not supposed to \"try too hard\". target lots of people in the hopes of stumbling across somebody to befriend.
\ncomplimenting something they have done, even if it's something simple like wearing a cool shirt, is a very easy start
\nfinding ground common allows for repeated communication
\nrepetition of this is what builds friendship. this is why friendships often develop at work, but can dissolve quickly after a job change.
\nthe situation matters. chatting with someone who's being paid to interact with you, like somebody working at a store, doesn't count because in context they more or less cannot choose to stop communicating with you until you leave the store. chatting with someone who has anything to gain by chatting with you doesn't count (like an intern at work).
\nto speed up a developing friendship, you can invite the person to interact with you on something with a clearly defined goal. You like coding? I like coding! Would you care to collaborate for 4 hours on a script that would help me find my Raspberry Pi on my network?
\nduring the activity, continue to communicate. this can be difficult because you're doing an activity that you both claim to enjoy, so in theory the activity should be sufficient to further the friendship. However, the activity doesn't build the friendship, it only builds a partnership. It's the communication that builds friendship.
\nunfortunately, there's no clear point during this process at which you know you have made a friend. so you have to define what a friend is, to you, and then work toward that goal.
\nHere are some examples of definitions for friendship. There is no right or wrong here, it's really just setting your own expectations and requirements:
\nA friend is someone to hang out with on sundays.
\nA friend is someone I can call when I've got some free time to kill.
\nA friend is someone I can play video games with online.
\nA friend is someone I can call, day or night, when I need help.
\nA friend is someone who has come over for dinner, and has met my family, and who I see at least once a month.
\nThere's no official definition, so you must define it yourself.\nYour definition may differ from the other person's definition.\nYou might say \"we are best friends\" but they might say \"no, I already have a best friend, but you're a good friend\" and THAT'S OK.
\nIf it helps, classify what kinds of friends you have so you understand what kinds of relationships you are maintaining.\nCommunicate with your friends, even if it's only to let them know that you're bad at communicating on a regular basis, or ask them how frequently they need to communicate to maintain a healthy friendship.
\n',78,108,0,'CC-BY-SA','autism,friendship,relationship,social engineering',0,0,1), -(3905,'2023-07-21','Presenting Fred Black',1105,'I have a short talk to present Fred Black.','Show notes
\nNo clear mark of when friendship starts
\noften feels \"right\" when mutual
\nto some people friendship is a persistent state. once you have it, it's forever unless explicitly dissolved.
\nfor other people, it's something requiring maintenance. arguable this suggests that there are degrees of friendship, based on when you last spoke to one another.
\ndegrees of friendship also suggests progression. friend → close friend → best friend.
\nfriendship requires communication.
\nstart by communicating in some way that makes the other person feel not unpleasant
\nyou're not supposed to target a friend. this can be a frustrating rule, because if you're trying to make a friend, you have to target somebody, but the general consensus is that you're not supposed to \"try too hard\". target lots of people in the hopes of stumbling across somebody to befriend.
\ncomplimenting something they have done, even if it's something simple like wearing a cool shirt, is a very easy start
\nfinding ground common allows for repeated communication
\nrepetition of this is what builds friendship. this is why friendships often develop at work, but can dissolve quickly after a job change.
\nthe situation matters. chatting with someone who's being paid to interact with you, like somebody working at a store, doesn't count because in context they more or less cannot choose to stop communicating with you until you leave the store. chatting with someone who has anything to gain by chatting with you doesn't count (like an intern at work).
\nto speed up a developing friendship, you can invite the person to interact with you on something with a clearly defined goal. You like coding? I like coding! Would you care to collaborate for 4 hours on a script that would help me find my Raspberry Pi on my network?
\nduring the activity, continue to communicate. this can be difficult because you're doing an activity that you both claim to enjoy, so in theory the activity should be sufficient to further the friendship. However, the activity doesn't build the friendship, it only builds a partnership. It's the communication that builds friendship.
\nunfortunately, there's no clear point during this process at which you know you have made a friend. so you have to define what a friend is, to you, and then work toward that goal.
\nHere are some examples of definitions for friendship. There is no right or wrong here, it's really just setting your own expectations and requirements:
\nA friend is someone to hang out with on sundays.
\nA friend is someone I can call when I've got some free time to kill.
\nA friend is someone I can play video games with online.
\nA friend is someone I can call, day or night, when I need help.
\nA friend is someone who has come over for dinner, and has met my family, and who I see at least once a month.
\nThere's no official definition, so you must define it yourself.\nYour definition may differ from the other person's definition.\nYou might say \"we are best friends\" but they might say \"no, I already have a best friend, but you're a good friend\" and THAT'S OK.
\nIf it helps, classify what kinds of friends you have so you understand what kinds of relationships you are maintaining.\nCommunicate with your friends, even if it's only to let them know that you're bad at communicating on a regular basis, or ask them how frequently they need to communicate to maintain a healthy friendship.
\n',78,108,0,'CC-BY-SA','autism,friendship,relationship,social engineering',0,0,1); +INSERT INTO `eps` (`id`, `date`, `title`, `duration`, `summary`, `notes`, `hostid`, `series`, `explicit`, `license`, `tags`, `version`, `downloads`, `valid`) VALUES (3905,'2023-07-21','Presenting Fred Black',1105,'I have a short talk to present Fred Black.','We discuss the packages installed in the second of three files that\nmake up my emacs config.
\n;;; init-base.el --- The basics\n;;; Commentary:\n;;; Packages for my personal and work laptop, but not termux.\n\n;;; Code:\n\n;;;;;;;;;;;;;;;\n;;; Writing ;;;\n;;;;;;;;;;;;;;;\n\n;; Focused writing mode\n(use-package olivetti\n :hook (olivetti-mode . typewriter-mode-toggle)\n :bind ("C-x C-w" . olivetti-mode)\n :custom (olivetti-body-width 64)\n :config\n (defvar-local typewriter-mode nil\n "Typewriter mode, automatically scroll down to keep cursor in\n the middle of the screen. Setting this variable explicitly will\n not do anything, use typewriter-mode-on, typewriter-mode-off\n and typewriter-mode-toggle instead.")\n (defun typewriter-mode-on()\n "Automatically scroll down to keep cursor in the middle of screen."\n (interactive)\n (setq-local typewriter-mode t)\n (centered-cursor-mode +1))\n (defun typewriter-mode-off()\n "Automatically scroll down to keep cursor in the middle of screen."\n (interactive)\n (kill-local-variable 'typewriter-mode)\n (centered-cursor-mode -1))\n (defun typewriter-mode-toggle()\n "Toggle typewriter scrolling mode on and off."\n (interactive)\n (if typewriter-mode (typewriter-mode-off) (typewriter-mode-on))))\n\n(use-package centered-cursor-mode)\n\n;; Check for weasel words and some other simple rules\n(use-package writegood-mode\n :bind ("C-c g" . writegood-mode))\n\n;; spellchecking\n(use-package flyspell-correct\n :after flyspell\n :bind (:map flyspell-mode-map\n ("C-;" . flyspell-correct-wrapper)))\n\n;; show correction options in a popup instead of the minibuffer\n(use-package flyspell-correct-popup\n :after (flyspell-correct))\n\n;online thesaurus service from powerthesaurus.org\n(use-package powerthesaurus)\n\n;; WordNet Thesaurus replacement\n(use-package synosaurus\n :custom (synosaurus-choose-method 'default)\n :config (when window-system\n (if (string= (x-server-vendor) "Microsoft Corp.")\n (setq synosaurus-wordnet--command "C:\\\\Program Files (x86)\\\\WordNet\\\\2.1\\\\bin\\\\wn.exe"))))\n\n;; WordNet search and view\n(use-package wordnut\n :bind ("C-c s" . wordnut-search)\n :config (when window-system\n (if (string= (x-server-vendor) "Microsoft Corp.")\n (setq wordnut-cmd "C:\\\\Program Files (x86)\\\\WordNet\\\\2.1\\\\bin\\\\wn.exe"))))\n\n;; fill and unfill with the same key\n(use-package unfill\n :bind ("M-q" . unfill-toggle))\n\n;; Markdown...\n(use-package markdown-mode)\n\n;;;;;;;;;;;;;;\n;;; Coding ;;;\n;;;;;;;;;;;;;;\n\n;; Syntax checking\n(use-package flycheck\n :diminish\n :init (global-flycheck-mode))\n\n(use-package flycheck-popup-tip\n :after (flycheck)\n :hook (flycheck-mode-hook . flycheck-popup-tip-mode))\n\n;; Web design\n(use-package emmet-mode\n :hook (sgml-mode . emmet-mode) ;; Auto-start on any markup modes\n (css-mode . emmet-mode)) ;; enable Emmet's css abbreviation.\n\n(use-package sass-mode)\n\n(use-package web-mode)\n\n;; Python\n(use-package python\n :mode ("\\\\.py\\\\'" . python-mode)\n :interpreter ("python" . python-mode))\n\n;; highlight todo items everywhere\n(use-package hl-todo\n :straight (:host github :repo "tarsius/hl-todo")\n :custom (hl-todo-keyword-faces\n `(("FIXME" error bold)\n ("STUB" error bold)\n ("REPLACETHIS" error bold)\n ("REVISIT" error bold)))\n (hl-todo-exclude-modes nil)\n :config (add-to-list 'hl-todo-include-modes 'org-mode)\n :init (global-hl-todo-mode))\n\n;; git\n(use-package magit)\n\n(use-package git-timemachine)\n\n;; rest APIs via org source block\n(use-package ob-restclient)\n\n;;; END ;;;\n\n(provide 'init-base)\n;;; init-base.el ends hereWe discuss the packages installed in the second of three files that\nmake up my emacs config.
\nSince recording, I pulled in some EXWM (the Emacs X Window Manager,\nthat\'s right), even though I\'m not actually using it, I\'m still using\nstumpWM.
\nI have also added pass, the password manager, khardel, an emacs\npackage for the khard CLI address book application.
\nI also moved (server-start) to this file, so that it\'ll only happen\nwhen I\'m on linux.
\n;;; init-extra.el --- Extra init stuff\n;;; Commentary:\n;;; Stuff just for my personal laptop, not for my work laptop or termux, for example.\n\n;;; Code:\n\n;;;;;;;;;;;;;;;;\n;;; org-roam ;;;\n;;;;;;;;;;;;;;;;\n\n(use-package org-roam\n :demand t\n :straight (:host github :repo "org-roam/org-roam"\n :files (:defaults "extensions/*"))\n :custom (org-roam-mode-sections (list #'org-roam-backlinks-section\n #'org-roam-reflinks-section\n #'org-roam-unlinked-references-section))\n :init (setq org-roam-directory "~/org/roam/"\n org-roam-capture-templates\n '(("o" "outline" plain\n "%?"\n :if-new\n (file+head "${slug}.org" "#+title: ${title}\\n#+filetags: :outline:\\n")\n :immediate-finish t\n :unnarrowed t)\n ("r" "reference" plain "%?"\n :if-new\n (file+head "${slug}.org" "#+title: ${title}\\n")\n :immediate-finish t\n :unnarrowed t)\n ("m" "memo" entry "* ${title}\\n%?"\n :if-new\n (file "memos.org")\n :immediate-finish t\n :unnarrowed t)))\n :bind (("C-c n l" . org-roam-buffer-toggle)\n ("C-c n f" . org-roam-node-find)\n ("C-c n g" . org-roam-graph)\n ("C-c n i" . org-roam-node-insert)\n ("C-c n c" . org-roam-capture)\n ;; Dailies\n ("C-c n j" . org-roam-dailies-capture-today))\n :config\n ;; If you're using a vertical completion framework, you might want a more informative completion interface\n (setq org-roam-node-display-template (concat "${title:*} " (propertize "${tags:10}" 'face 'org-tag)))\n (org-roam-db-autosync-mode)\n ;; If using org-roam-protocol\n (require 'org-roam-protocol))\n\n;; citations\n(use-package citar\n :after org-roam\n :custom (org-cite-insert-processor 'citar)\n (org-cite-follow-processor 'citar)\n (org-cite-activate-processor 'citar)\n (citar-bibliography '("~/org/biblio.bib"))\n (citar-notes-paths '("~/org/roam"))\n (citar-file-note-extensions '("org"))\n :hook (LaTeX-mode . citar-capf-setup)\n (org-mode . citar-capf-setup)\n :bind (("C-c n b" . #'citar-open-notes)\n :map org-mode-map :package org\n ("C-c b" . #'org-cite-insert)))\n\n;; view your org-roam notes on a map\n(use-package org-roam-ui\n :after org-roam\n :custom (org-roam-ui-sync-theme t)\n (org-roam-ui-follow t)\n (org-roam-ui-update-on-save t)\n (org-roam-ui-open-on-start t))\n\n;; archive web pages in org attachments\n(use-package org-board\n :after org\n :custom (org-board-default-browser #'browse-url)\n (org-board-property "ROAM_REFS")\n :bind (:map org-mode-map\n ("C-c B a" . org-board-archive)\n ("C-c B o" . org-board-open)\n ("C-c B D" . org-board-delete-all)))\n\n;;;;;;;;;;;;;;;\n;;; Writing ;;;\n;;;;;;;;;;;;;;;\n\n; something like grammarly, but open source\n(use-package langtool)\n\n;; better than docview, for pdf\n(use-package pdf-tools)\n\n;; annotating docs in org files\n(use-package org-noter)\n\n;; epub\n(use-package nov\n :mode ("\\\\.epub$" . nov-mode))\n\n;;; Invoke quick emacs windows to edit anything anywhere.\n;;; bind a key in xorg to ~emacsclient -c (emacs-everywhere)~\n(use-package emacs-everywhere)\n\n;;;;;;;;;;;;;;\n;;; Auctex ;;;\n;;;;;;;;;;;;;;\n(straight-use-package '( auctex\n :host nil :repo "https://git.savannah.gnu.org/git/auctex.git"\n :pre-build (("./autogen.sh")\n ("./configure" "--without-texmf-dir" "--with-lispdir=.")\n ("make"))))\n\n (setq TeX-data-directory (expand-file-name "straight/repos/auctex" user-emacs-directory)\n TeX-lisp-directory TeX-data-directory)\n\n (eval-after-load 'info\n '(add-to-list 'Info-additional-directory-list\n (expand-file-name "straight/repos/auctex/doc" user-emacs-directory)))\n (load (expand-file-name "straight/repos/auctex/auctex.el" user-emacs-directory) nil t t)\n (load (expand-file-name "straight/repos/auctex/preview-latex.el" user-emacs-directory) nil t t)\n\n(use-package evil-tex)\n\n(use-package latex-preview-pane\n :custom (latex-preview-pane-use-frame t))\n\n(use-package adaptive-wrap)\n\n;;; END AUCTEX ;;;\n\n;;;;;;;;;;;;;;;;;;;\n;;; Programming ;;;\n;;;;;;;;;;;;;;;;;;;\n\n;; downloading and viewing Dash documentation files\n(use-package dash-docs\n :init (defun elisp-doc ()\n (setq-local consult-dash-docsets '("Emacs Lisp")))\n (add-hook 'emacs-lisp-mode-hook 'elisp-doc)\n :custom (dash-docs-docsets-path (expand-file-name "docsets" user-emacs-directory))\n (dash-docs-browse-func 'eww))\n\n(use-package consult-dash\n :straight (:host codeberg :repo "rahguzar/consult-dash")\n :bind (("M-s d" . consult-dash))\n :after consult\n :config\n ;; Use the symbol at point as initial search term\n (consult-customize consult-dash :initial (thing-at-point 'symbol)))\n\n;;;;;;;;;;;;;\n;;; Email ;;;\n;;;;;;;;;;;;;\n\n(use-package notmuch\n :commands notmuch\n :config (defun notmuch-show-view-html ()\n "Open the text/html part of the current message using\n `notmuch-show-view-part'. From https://emacs.stackexchange.com/a/63457"\n (interactive)\n (save-excursion\n (goto-char (prop-match-beginning\n (text-property-search-forward\n :notmuch-part "text/html"\n (lambda (value notmuch-part)\n (equal (plist-get notmuch-part :content-type)\n value)))))\n (notmuch-show-view-part)))\n ;; Enable link to message via org-store-link\n (load-file (expand-file-name "org-notmuch.el" user-emacs-directory))\n (require 'org-notmuch)\n :bind (:map notmuch-show-mode-map\n (". v" . notmuch-show-view-html))\n :custom (notmuch-draft-folder "local/drafts")\n (notmuch-search-oldest-first nil)\n (notmuch-fcc-dirs "fastmail/sent")\n (notmuch-tagging-keys '(("r" ("+receipt" "-inbox") "Receipt")))\n (sendmail-program (executable-find "msmtp"))\n (message-sendmail-f-is-evil t)\n (message-sendmail-extra-arguments '("--read-envelope-from")))\n\n(use-package khardel\n :after notmuch\n :bind (:map notmuch-message-mode-map\n ("C-c M-k" . khardel-insert-email)))\n\n;;;;;;;;;;;;\n;;; PASS ;;;\n;;;;;;;;;;;;\n\n(use-package pass)\n\n;;;;;;;;;;;;\n;;; EXWM ;;;\n;;;;;;;;;;;;\n\n(use-package xelb\n :disabled t\n :straight (:host github :repo "ch11ng/xelb"))\n\n(use-package exwm\n :disabled t\n :straight (:host github :repo "ch11ng/exwm")\n :defer t\n :config (require 'exwm-systemtray)\n (require 'exwm-randr)\n (setq xcb:connection-timeout 20)\n (exwm-systemtray-enable)\n (add-hook 'exwm-update-class-hook\n (lambda ()\n (exwm-workspace-rename-buffer exwm-class-name)))\n (add-hook 'exwm-randr-screen-change-hook\n (lambda ()\n (start-process-shell-command\n "autorandr" nil "autorandr -c")))\n (defun exwm-randr-mobile()\n "Load a xrandr profile to use only the laptop screen."\n (interactive)\n (start-process-shell-command "xrandr" nil "xrandr --output eDP-1 --auto --output DP-1 --off"))\n (defun exwm-randr-docked()\n "Load a xrandr profile to use only the connected external screen DP-1."\n (interactive)\n (start-process-shell-command "xrandr" nil "xrandr --output eDP-1 --off --output DP-1 --auto"))\n (defun exwm-randr-chair()\n "Load a xrandr profile to use both the laptop screen and the connected screen."\n (interactive)\n (start-process-shell-command "xrandr" nil "xrandr --output HDMI-1 --auto --scale 1.3 --output eDP-1 --off"))\n (defun exwm-randr-all()\n "Load a xrandr profile to use both the laptop screen and the connected screen."\n (interactive)\n (start-process-shell-command "xrandr" nil "xrandr --output eDP-1 --primary --output DP-1 --above eDP-1")\n (setq exwm-randr-workspace-output-plist '(0 "eDP-1" 1 "DP-1"))\n )\n (exwm-randr-enable)\n :custom (exwm-input-global-keys\n `((,(kbd "s-r") . exwm-reset)\n (,(kbd "s-w") . exwm-workspace-switch)\n (,(kbd "s-a") . exwm-randr-all)\n (,(kbd "s-c") . exwm-randr-chair)\n (,(kbd "s-d") . exwm-randr-docked)\n (,(kbd "s-m") . exwm-randr-mobile)\n (,(kbd "s-k") . exwm-input-release-keyboard)\n (,(kbd "s-f") . exwm-layout-toggle-fullscreen)\n (,(kbd "s-p") . pass)\n (,(kbd "s-t") . exwm-workspace-switch-to-buffer)\n (,(kbd "s-&") . (lambda (command)\n (interactive (list (read-shell-command "$ ")))\n (start-process-shell-command command nil command)))\n ,@(mapcar (lambda (i)\n `(,(kbd (format "s-%d" i)) .\n (lambda ()\n (interactive)\n (exwm-workspace-switch-create ,i))))\n (number-sequence 0 9))\n ))\n )\n\n;; start emacs server\n(server-start)\n\n;;; END ;;;\n\n(provide 'init-extra)\n;;; init-extra.el ends hereNo special knowledge nor resources.
\nThis is a preview show for some future, self referential tangle of\ncryptographic distraction.
So far, I see money as some social credit by proxy.
\nI recognise the utility of keeping track of resource recipes.
\nI also see dangers in over abstracting relations beyond robustly\nprovable outcomes.