14 lines
266 B
Bash
Executable File
14 lines
266 B
Bash
Executable File
#!/bin/bash
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#
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# Demonstrate the use of a regular expression to detect blank lines in a file,
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# and those containing only whitespace
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#
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re="^[[:digit:]]+[[:blank:]]*$"
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while read -r line; do
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[[ $line =~ $re ]] && continue
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echo "$line"
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done < <(cat -n "$0")
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