I noticed that a couple .txt files in my git repository have execute permissions. I also noticed that when I did chmod a-x *.txt the repo actually showed changes. Here is the output of the git diff after updating the files.
diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
Is there a way to blame permissions of a file? (specifically I'd like to find out who added the a+x permissions to these files.
You have probably used git diff command with some commits specified to get the results shown in your question. Let's assume the command was:
git diff goodcommit..badcommit requirements.txt
In case you omitted ..badcommit part, assume the badcommit is HEAD. You can easily find the offending commit (and a culprit) by running following sequence of commands:
git bisect start badcommit goodcommit
git bisect run test ! -x requirements.txt
and wait for finish. At the end you will get a message like:
running test ! -x requirements.txt
8088473809f905bd8f3d5825983e8c9fe82b10c6 is the first bad commit
commit 8088473809f905bd8f3d5825983e8c9fe82b10c6
Author: author
Date: Fri Jun 16 23:05:49 2017 +0100
commit message
To get back to normal work, just run:
git bisect reset