cheat/cheatsheets/sed
Anthony Delviscio e6e4b1e420 Added global flag, replaced redundant redirection.
Not using the 'g' (global) flag only replaces the first match on a line.  The 'g' flag will replace all matches.
2013-08-21 00:17:52 -04:00

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To replace all occurrences of "day" with "night" and write to stdout:
sed 's/day/night/g' file.txt
To replace all occurrences of "day" with "night" within file.txt:
sed -i 's/day/night/g' file.txt
To replace all occurrences of "day" with "night" on stdin:
echo 'It is daytime' | sed 's/day/night/g'