I have a git repo with one file which has new commits added almost daily.
I would like to extract copies of the file as it looked at every commit to a new directory.
Ideally the files would be date-stamped (2017_08_24.txt) according to when the commit was made.
I've already tried git format-patch -o directory --root HEAD but this exports the changelog, not the full file as it looked at the time of the commit.
Thanks
git show <commit>:<file> will gove you the contents of a file as it was in a specific commit hash. You could use git log to get all the commits on a file, and then use xargs to pass them on to git show.
The following command line will extract a series of files with the original name and the commit hash concatinated to them:
$ git log --format="%H" /path/to/file | \ xargs -I % sh -c "git show %:/path/to/file > /path/to/target/filename.%" Here's a bash script. It's not fully tested. You can modify it as you like.
#!/bin/bash branch=$1 file=$2 git log --pretty=%H $branch | while read hash;do object="$branch:$file" objecthash=$(git rev-parse $object 2>/dev/null) if [ "$object" != "$objecthash" ];then git cat-file -p $objecthash > $(git log -1 --pretty=%cd --date=format:%Y%m%d_%H%M%S $hash).txt else echo "$file does not exist in $hash" fi done For a specific commit you can retrieve the file version like this
git show 23uggf2f8g:myfile.txt > backupDir/oldVersion.txt But I think that you have to write a script to do that automatically for every commit
git log(which can be called to just show commit ids), this shouldn’t be too difficult.