Linux command
sed 命令
文本
涉及管道、覆盖或删除，执行前请先确认路径和参数。
常用示例
Substitute
[command] | sed 's/apple/mango/g'
Replace in-place
sed -i 's/apple/mango/g' [path/to/file]
Example
[command] | sed -e 's/apple/mango/g' -e 's/orange/lime/g'
Example
[command] | sed 's#////#____#g'
Delete lines
sed -i.orig '1,5d' [path/to/file]
Print only
[command] | sed -n '1p'
Insert
sed -i '1i\your new line text' [path/to/file]
Delete blank lines
sed -i '/^[[:space:]]*$/d' [path/to/file]
说明
sed (stream editor) is a powerful text processing tool that performs basic transformations on input streams (files or piped data). It reads input line by line, applies specified editing commands, and writes to standard output. Common operations include search and replace (s///), deletion (d), insertion (i), and printing (p). sed uses regular expressions for pattern matching and supports both basic and extended regex syntax. Address ranges (line numbers or patterns) can target specific lines.
参数
- -i_suffix_, --in-place=_suffix_
- Edit files in place; optionally create backup with suffix
- -e _script_, --expression=_script_
- Add script commands to execute
- -f _file_, --file=_file_
- Read script from file
- -n, --quiet, --silent
- Suppress automatic printing; only print when p command used
- -r, -E, --regexp-extended
- Use extended regular expressions
- -s, --separate
- Treat files as separate rather than single stream
- -z, --null-data
- Separate lines by NUL characters
- --sandbox
- Block input/output commands (e/w/r); use for untrusted scripts
- --posix
- Disable all GNU extensions for POSIX compliance
- --debug
- Annotate program execution
FAQ
What is the sed command used for?
sed (stream editor) is a powerful text processing tool that performs basic transformations on input streams (files or piped data). It reads input line by line, applies specified editing commands, and writes to standard output. Common operations include search and replace (s///), deletion (d), insertion (i), and printing (p). sed uses regular expressions for pattern matching and supports both basic and extended regex syntax. Address ranges (line numbers or patterns) can target specific lines.
How do I run a basic sed example?
Run `[command] | sed 's/apple/mango/g'` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -i_suffix_, --in-place=_suffix_ do in sed?
Edit files in place; optionally create backup with suffix