Git cheatsheet

Find all instances of text in all commits

git grep "text to look for" $(git rev-list --all)

List commit messages since given commit

git log --pretty=format:%s HASH..HEAD

Config repository master branch to only accept non-fast forward commits

git config branch.master.mergeoptions  "--no-ff"

Hint: Don't do this on your local working copy, or everytime you do a 'pull' from origin it will create yet another explicit commit (as opposed to a simple fast-forward).

Move branch to master without checking out

git branch -f <BRANCH_TO_MOVE> master

Speed up Git in Windows

(From http://stackoverflow.com/a/24045966)

You can significantly speed up git on Windows by running three commands to set some config options:

git config --global feature.manyFiles true
git config --global core.preloadindex true
git config --global core.fscache true
git config --global gc.auto 256

Notes:

core.preloadindex does filesystem operations in parallel to hide latency and will be enabled by default in future versions of git on all platforms (update: enabled in v2.1)
core.fscache fixes UAC issues (don't need to run git as admin)
gc.auto minimizes the number of files in .git

Show all changed files between two Git commits

git diff --name-status SHA1 SHA2

Find largest files in repo

Saves results to text file bigtosmall.txt

(From http://naleid.com/blog/2012/01/17/finding-and-purging-big-files-from-git-history)

git rev-list --objects --all | sort -k 2 > allfileshas.txt

git gc && git verify-pack -v .git/objects/pack/pack-*.idx | egrep "^\w+ blob\W+[0-9]+ [0-9]+ [0-9]+$" | sort -k 3 -n -r > bigobjects.txt

for SHA in `cut -f 1 -d\  < bigobjects.txt`; do
echo $(grep $SHA bigobjects.txt) $(grep $SHA allfileshas.txt) | awk '{print $1,$3,$7}' >> bigtosmall.txt
done;

denji/git-cheatsheet.md