Move under www to ease rsync

www/eps/hpr2679/hpr2679_bash13_ex4.sh

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+#!/bin/bash
+
+#
+# Check that the data file exists
+#
+data="bash13_ex4.txt"
+[ -e "$data" ] || { echo "File $data not found"; exit 1; }
+
+#
+# Email addresses can be:
+#   1. local-part@domain
+#   2. Name <local-part@domain>
+#
+part1='([a-zA-Z0-9_][a-zA-Z0-9_.]+@[a-zA-Z0-9.-]+)'
+part2='([^<]+)<([a-zA-Z0-9_][a-zA-Z0-9_.]+@[a-zA-Z0-9.-]+)>'
+re="^($part1|$part2)$"
+
+#
+# Read and check each line from the file
+#
+while read -r line; do
+    #
+    # Does it match the regular expression?
+    #
+    if [[ $line =~ $re ]]; then
+        #declare -p BASH_REMATCH
+        #
+        # Decide which format it is depending on whether element 2 of
+        # BASH_REMATCH is zero length
+        #
+        if [[ -z ${BASH_REMATCH[2]} ]]; then
+            # Type 2
+            name="${BASH_REMATCH[3]}"
+            email="${BASH_REMATCH[4]}"
+        else
+            # Type 1
+            name=
+            email="${BASH_REMATCH[2]}"
+        fi
+        echo "Name: $name"
+        echo "Email: $email"
+    else
+        echo "Not recognised: $line"
+    fi
+    echo
+done < "$data"