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.

git grep search_string

git grep search_string -- file_glob_pattern

git grep --recurse-submodules search_string

git grep search_string HEAD~2

git grep search_string $(git rev-list --all)