tldr/common/sed.md

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# sed
> Run replacements based on regular expressions
- replace all occurrences of a string in a file, and print the result
`sed 's/{{find}}/{{replace}}/g' {{filename}}`
- replace all occurrences of a string in a file, and overwrite the file
contents
`sed -i '' 's/{{find}}/{{replace}}/g' {{filename}}`
- replace all occurrences of an extended regular expression in a file
`sed -E 's/{{regex}}/{{replace}}/g' {{filename}}`