| Quick Cheat Sheet
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git config credential.helper store
git config user.email "email@example.com"
git config user.name "username"
git log --graph --oneline
git log --stat
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Speed-up
# alias 'acp' = add+commit+push
git config --global alias.acp '!f() { git add . && git commit -m "$@" && git push; }; f'
git acp "this is my commit comment"
Basics
Create repository
git init # standard
git init --bare # bare without working directory
Initial checkout of remote repository
git clone https://gerrit.wikimedia.org/r/p/mediawiki/core.git
git clone ssh://user@server/srv/git/git-repo.git
Get latest updates from server
git pull # (= git fetch && git merge)
git fetch # get updates from remote, safe operation
git merge # merges those updates into working dir
Change files and commit
git status # show changed files (working dir & staging area)
git diff # show changes in working dir
git diff --cached # show changes in staging area
git diff --cached --name-only
git diff --name-status
git add .
git add -A # all
git commit -m "Commit message"
git commit -a # includes add
git commit -am.
git push
.gitignore files
*.log
filename.txt
subfolder/*
Staging
<------------------------ checkout ---------------------
Working Directory -stage-> Staging Area -commit-> Repository
git add . # add all files to staging area
git status # show staged & unstaged(untracked) files
git reset # unstage all files
Branches
git branch # list local branches
git branch -a # list local & remote branches
git branch --merged # list branches that have been merged
git branch <new-branch-name> # create new branch (from the current commit)
hard reset to specific branch
git fetch --all
git reset --hard origin/branchname
switch to branch
git switch <new-branch-name>
git commit ... some-stuff
git switch master
merge feature branch into master
git checkout master
git merge <new-branch-name> (--no-ff) # no fast forward: create merge commit
git diff
git commit -a
delete branch
git branch -d <branch-name> # local
git push origin --delete <branch-name> # remote
https://stackoverflow.com/questions/9069061/what-is-the-difference-between-git-merge-and-git-merge-no-ff
Repositories
move repo to new server
git remote -v # show remote location
git remote set-url origin <URL to my NEW repo location> # change remote url
git push -f origin # push to remote url
git remote -v
sparse clone (only specific folder)
mkdir <repo>
cd <repo>
git init
git remote add -f origin <url>
git config core.sparseCheckout true
echo "some/dir/" >> .git/info/sparse-checkout
git pull origin master
Forks
Syncing fork
git clone https://your-fork.git
git remote -v # should show your fork
git remote add upstream https # adding upstream repo
git remote -v # should show your fork as origin and upstream
git fetch upstream # get changes from upstream
git checkout master (or fork-branch)
git merge upstream/master
git add .
git commit -m "sync with upstream"
git push origin master
Undo mistakes
replace file with commited version
git checkout file.txt # file gets replaced by repo version
fix commit message or files
git commit -m "Wrong message"
git commit --amend -m "Fixed message" # only do this if you never pushed the wrong commit
move commit from master to branch
git log # get hash from commit you want to cherry pick
git checkout <branch>
git cherry-pick <hash-of-commit> # add commit to branch
git checkout master # if not pushed to remote,
git log # get hash of previous commit
git reset --soft <hash> # resets commit to previous hash, but will keep changes in staging area
git reset (--mixed) <hash> # resets commit to previous hash, will keep changes only in working dir
git reset --hard <hash> # resets commit to previous hash, will delete changes (untracked files will stay)
git clean -df # deletes untracked files from working dir
undo commit after push
git log # get hash of bad commit
git revert <hash> # adds a revert-commit
Configuration
Show config
git config --list
Store credentials
git config credential.helper store
Set username and email
git config --global user.email "you@example.com"
git config --global user.name "Your Name"
Windows - remove old credentials
rundll32.exe keymgr.dll,KRShowKeyMgr
post-receive hook
- execute script on main git server, after receiving push: hooks/post-receive
#!/bin/bash
# unset GIT_INDEX_FILE # not needed for post-receive?
git --work-tree=/srv/targetfolder --git-dir=/home/demo/proj/.git checkout -f
- or
#!/bin/bash
while read oldrev newrev ref
do
if [[ $ref =~ .*/master$ ]];
then
echo "Master ref received. Deploying master branch to production..."
git --work-tree=/var/www/html --git-dir=/home/demo/proj checkout -f
else
echo "Ref $ref successfully received. Doing nothing: only the master branch may be deployed on this server."
fi
done
chmod +x post-receive
Links
Other
Special features
- auto-commit when file changes
inotifywait -q -m -e CLOSE_WRITE --format="git commit -a -m 'autocommit on change' %w" file.txt | sh
- or
while true; do
inotifywait -qq -e CLOSE_WRITE ~/.calendar/calendar
cd ~/.calendar; git commit -a -m 'autocommit on change'
done
# inotify "-r" for recursive
- or