Git log, input from another command

Question

I have an assignment to count all the changes from all the files from a git open-source project. I know that if I use:

git log --pretty=oneline <filename> | wc  -l

I will get the number of changes of that file ( I use git bash on Windows 10)

My idea is to use

find .

and to redirect the output to the git command. How can I do the redirecting? I tried :

$ find . > git log --pretty=online | wc -l
0
find: unknown predicate `--pretty=online'

and

$ find . | git log --pretty=online | wc -l
fatal: invalid --pretty format: online
0

jthill · Accepted Answer · 2018-03-18 15:32:59Z

2

You can do much better than that,

git log --pretty='' --name-only | sort | uniq -c

That's "show only the names of files changed in each commit, no other metadata, sort that list so uniq can easily count the occurrences of each'

answered Mar 18, 2018 at 15:32

jthill

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Stephen Newell · Accepted Answer · 2018-03-18 15:24:06Z

0

You'll need to loop over the results of find.

find -type f | grep -v '^\./\.git' |
while read f; do
    count=$(git log --oneline ${f} | wc -l)
    echo "${f} - ${count}"
done | grep -v ' 0$'

Your find is okay, but I'd restrict it to just files (git doesn't track directories explicitly) and remove the .git folder (we don't care about those files). Pipe that into a loop (I'm using a while), and then your git log command works just fine. Lastly, I'm going to strip anything with a count of 0, since I may have files that are part of .gitignore I don't want to show up (e.g., things in __pycache__).

answered Mar 18, 2018 at 15:24

Stephen Newell

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