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Remove Empty Lines

Remove empty lines from a file using sed sed '/^$/d' file.txt Original Article

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Graphical representation of sub-directories

This command shows a graphical representation of the current sub-directories. ls -R | grep ":$" | sed -e 's/:$//' -e 's/[^-][^\/]*\//--/g' -e 's/^/ /' -e 's/-/|/'mand Original Article

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Remove Empty Lines and Comments

Remove comments and blank lines from example.pl sed '/ *#/d; /^$/d' example.pl

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Grep using Sed

View only lines that contain the word “string” sed -n '/string/p'

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Fish Shell Command History Meme

Use this command if you want to know your command usage stats in the fish shell. grep -v "^\#" ".config/fish/fish_history"|awk '{print $1}'|sort|uniq -c|sort -rn|head -n10

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Remove Empty Characters at End of Lines

Remove empty characters at the end of each row sed -e 's/ *$//' file.txt

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View some lines in a file

View from 1th to 5th line sed -n '1,5p;5q' example.txt

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Sed Regular Expression Range

Print the contents of a file from a given regular expression to another sed -n '/start/,/end/ p' file This will print the contents of the ‘file’ from the line that matches /start/ until the line that...

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Delete Leading Whitespace Using Sed

Delete leading whitespace (spaces/tabs/etc) from beginning of each line. Same as yesterday’s command – but using sed cat file.txt | sed -e 's,^ *,,' Credit: Vivin

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Add Line Numbers

Use this command to add line numbers to a text file… sed = filename.txt | sed 'N;s/\n/\t/' > filename_number.txt

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