mirror of https://github.com/CrimsonTome/tldr.git
sed: refresh/add pages (#7931)
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# sed
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# sed
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> Edit text in a scriptable manner.
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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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> More information: <https://www.gnu.org/software/sed/manual/sed.html>.
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- Replace the first occurrence of a regular expression in each line of a file, and print the result:
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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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`sed 's/{{regular_expression}}/{{replace}}/' {{filename}}`
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`{{command}} | sed 's/apple/mango/g'`
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- Replace all occurrences of an extended regular expression in a file, and print the result:
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- Execute a specific script [f]ile and print the result to `stdout`:
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`sed -r 's/{{regular_expression}}/{{replace}}/g' {{filename}}`
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`{{command}} | sed -f {{path/to/script.sed}}`
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- Replace all occurrences of a string in a file, overwriting the file (i.e. in-place):
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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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`sed -i 's/{{find}}/{{replace}}/g' {{filename}}`
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`{{command}} | sed -E 's/(apple)/\U\1/g'`
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- Replace only on lines matching the line pattern:
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- Print just a first line to `stdout`:
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`sed '/{{line_pattern}}/s/{{find}}/{{replace}}/' {{filename}}`
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`{{command}} | sed -n '1p'`
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- Delete lines matching the line pattern:
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- Replace all `apple` (basic regex) occurrences with `mango` (basic regex) in all input lines and save modifications to a specific file:
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`sed '/{{line_pattern}}/d' {{filename}}`
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`sed -i 's/apple/mango/g' {{path/to/file}}`
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- Print the first 11 lines of a file:
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`sed 11q {{filename}}`
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- Apply multiple find-replace expressions to a file:
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`sed -e 's/{{find}}/{{replace}}/' -e 's/{{find}}/{{replace}}/' {{filename}}`
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- Replace separator `/` by any other character not used in the find or replace patterns, e.g. `#`:
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`sed 's#{{find}}#{{replace}}#' {{filename}}`
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@ -1,36 +0,0 @@
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# sed
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> Edit text in a scriptable manner.
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> More information: <https://ss64.com/osx/sed.html>.
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- Replace the first occurrence of a string in a file, and print the result:
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`sed 's/{{find}}/{{replace}}/' {{filename}}`
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- Replace all occurrences of an extended regular expression in a file:
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`sed -E 's/{{regular_expression}}/{{replace}}/g' {{filename}}`
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- Replace all occurrences of a string [i]n a file, overwriting the file (i.e. in-place):
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`sed -i '' 's/{{find}}/{{replace}}/g' {{filename}}`
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- Replace only on lines matching the line pattern:
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`sed '/{{line_pattern}}/s/{{find}}/{{replace}}/' {{filename}}`
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- Print only text between n-th line till the next empty line:
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`sed -n '{{line_number}},/^$/p' {{filename}}`
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- Apply multiple find-replace expressions to a file:
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`sed -e 's/{{find}}/{{replace}}/' -e 's/{{find}}/{{replace}}/' {{filename}}`
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- Replace separator `/` by any other character not used in the find or replace patterns, e.g. `#`:
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`sed 's#{{find}}#{{replace}}#' {{filename}}`
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- [d]elete the line at the specific line number [i]n a file, overwriting the file:
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`sed -i '' '{{line_number}}d' {{filename}}`
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