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39 lines
1.1 KiB
Plaintext
39 lines
1.1 KiB
Plaintext
---
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syntax: markdown
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tags: [tldr, linux]
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source: https://github.com/tldr-pages/tldr.git
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---
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# sed
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> Edit text in a scriptable manner.
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> See also: `awk`, `ed`.
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> More information: <https://www.gnu.org/software/sed/manual/sed.html>.
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- Replace all `apple` (basic regex) occurrences with `mango` (basic regex) in all input lines and print the result to `stdout`:
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`{{command}} | sed 's/apple/mango/g'`
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- Replace all `apple` (extended regex) occurrences with `APPLE` (extended regex) in all input lines and print the result to `stdout`:
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`{{command}} | sed -E 's/(apple)/\U\1/g'`
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- Replace all `apple` (basic regex) occurrences with `mango` (basic regex) in a specific file and overwrite the original file in place:
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`sed -i 's/apple/mango/g' {{path/to/file}}`
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- Execute a specific script [f]ile and print the result to `stdout`:
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`{{command}} | sed -f {{path/to/script.sed}}`
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- Print just the first line to `stdout`:
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`{{command}} | sed -n '1p'`
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- [d]elete the first line of a file:
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`sed -i 1d {{path/to/file}}`
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- [i]nsert a new line at the first line of a file:
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`sed -i '1i\your new line text\' {{path/to/file}}`
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