tldr/pages/common/git-grep.md

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# git-grep
> Find strings inside files anywhere in a repository's history.
> Accepts a lot of the same flags as regular `grep`.
> More information: <https://git-scm.com/docs/git-grep>.
- Search for a string in tracked files:
`git grep {{search_string}}`
- Search for a string in files matching a pattern in tracked files:
`git grep {{search_string}} -- {{file_glob_pattern}}`
- Search for a string in tracked files, including submodules:
`git grep --recurse-submodules {{search_string}}`
- Search for a string at a specific point in history:
`git grep {{search_string}} {{HEAD~2}}`