Sed Reference
Common sed commands, substitutions, and flags.
The data
0
- Pattern
- Substitute
- Command
- sed 's/foo/bar/g' file
- Description
- Replace all occurrences of foo with bar globally.
1
- Pattern
- In-place edit
- Command
- sed -i 's/foo/bar/g' file
- Description
- Edit file in place; use -i.bak for backup.
2
- Pattern
- Delete lines
- Command
- sed '3d' file
- Description
- Delete line 3. Use /pattern/d for pattern match.
3
- Pattern
- Print lines
- Command
- sed -n '5,10p' file
- Description
- Print lines 5 through 10 only.
4
- Pattern
- Insert/append
- Command
- sed '3i\nNew line' file
- Description
- Insert text before line 3.
5
- Pattern
- Regex group
- Command
- sed 's/(\d+)/[\1]/g'
- Description
- Capture digits in parentheses and wrap in brackets.
6
- Pattern
- Multiple commands
- Command
- sed -e 's/a/A/g' -e 's/e/E/g'
- Description
- Apply multiple substitution commands.
7
- Pattern
- Address range
- Command
- sed '1,5s/old/new/' file
- Description
- Substitute only in lines 1 through 5.
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