SED Commands Cheat Sheet
Here is a cli commands cheat sheet for SED command, you can use this as a quick reminder for basic commands with a brief description for each of the commands.
What is SED command?
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# To replace all occurrences of "day" with "night" and write to stdout:
sed 's/day/night/g'
# To replace all occurrences of "day" with "night" within :
sed -i 's/day/night/g'
# To replace all occurrences of "day" with "night" on stdin:
echo 'It is daytime' | sed 's/day/night/g'
# To remove leading spaces:
sed -i -r 's/^\s+//g'
# To remove empty lines and print results to stdout:
sed '/^$/d'
# To replace newlines in multiple lines:
sed ':a;N;$!ba;s/\n//g'
# To insert a line before a matching pattern:
sed '/Once upon a time/i\Chapter 1'
# To add a line after a matching pattern:
sed '/happily ever after/a\The end.'
Check out the SED command documentation .
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