Bash script to generate churn counts in git repo

churn script

churn number and file name
git log --all -M -C --name-only | grep -E '^(app|lib)/' | sort | uniq -c | sort | awk 'BEGIN {print "count,file"} {print $1 "," $2}'

churn number and file name w/ limiting to last n commits
git log --all -n 5000 -M -C --name-only | grep -E '^spec/models' | sort | uniq -c | sort | awk 'BEGIN {print "count,file"} {print $1 "," $2}'

graph of churn number and frequency
git log --all -M -C --name-only | grep -E '^(app|lib)/' | sort | uniq -c | sort | awk '{print $1}' | uniq -c | sort | awk 'BEGIN { print "frequency,churn_count"} { print $1,$2}'

Gary,

I think the graphs over time would be more of an interest from an archeological perspective, rather than changing my current habits.

Thanks for the tip on passing $* to it. I'll do that when I build a script. Or, I could just make a function to put in my bash_profile, no? Maybe I'll ping you to help me.

Yeah, it'd be fine as a function. A script makes it slightly more reusable for others since they just drop the file any where on their $PATH.

True about making it more reusable. I could put it into my dotfiles repo.

Or, you could, and I can just copy it. HAHA!

Done. https://github.com/garybernhardt/dotfiles/blob/master/bin/git-churn

I removed your grep for 'app|lib'. You can just pass directories straight to git log to log them. This script should work exactly like yours did.

Awesome, Gary! Thanks!

This might need some more work, haven't done anything with it for awhile, but this tracks files, classes, and methods for a ruby project

https://github.com/danmayer/churn

Great, this helped me a lot. Thanks!

If you add -n to the final sort it will sort numerically instead of alphabetically

If you remove -all it allows specifying an SHA1 in the log as churn up to that SHA1.

I just found https://github.com/AnAppAMonth/git-churn, which is a python solution giving a more detailed interpretation of churn (additions, subtractions).

Solutions that I've found online looked at changes to files irrespective whether these are new changes or edits to existing lines of code. Hence I made this solution: https://github.com/flacle/truegitcodechurn/