Say I'm in a Git repository. I delete a file and commit that change. I continue working and make some more commits. Then, I find I need to restore that file.
I know I can checkout a file using
git checkout HEAD^ foo.bar
Find the last commit that affected the given path. As the file isn't in the HEAD commit, this commit must have deleted it.
git rev-list -n 1 HEAD -- <file_path>
Then checkout the version at the commit before, using the caret (
git checkout <deleting_commit>^ -- <file_path>
Or in one command, if
$file is the file in question.
git checkout $(git rev-list -n 1 HEAD -- "$file")^ -- "$file"