Tools

sed Cheat Sheet

Print-ready cheat sheet for sed, organized for fast lookup, study, and desk-side use

Source: GNU sed Manual (gnu.org/software/sed)
License: MIT
Variants: 3 download options
Updated: 2026-03-27

Sample

What's in this cheat sheet

Running sed

sed 's/old/new/' file.txt          # substitute first match per line
sed 's/old/new/g' file.txt         # substitute all matches per line
sed -n '5p' file.txt               # print only line 5
sed '3d' file.txt                  # delete line 3
echo "hello" | sed 's/hello/hi/'   # pipe input

Command-Line Flags

`-n`	Suppress automatic printing; only print with `p`
`-e 'cmd'`	Execute a sed command (chain multiple with `-e`)
`-f script.sed`	Read commands from a file
`-i[suffix]`	Edit file in-place (optional backup suffix)
`-E / -r`	Use extended regular expressions

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