Formulas

Find and Replace a pattern in all files of a tree

• find and replace all occurrences of foo with bar within a directory tree
  • grep -rl 'foo' . | xargs sed -i .bk 's|foo|bar|g'
  • the first part gets a list of all files that have the pattern foo in it, then it pipes that list into the second part, which runs the sed substitution on each file
  • if we don't want to create a backup, then replace .bk with ''

Find and Replace a pattern in certain files

• find and replace all occurrences of foo with bar in all .js files
  • find . -name "*.js" -exec sed -i '' s/foo/bar/g {} +

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Backlinks

• Sed