git remote add with other SSH port

git remote add origin ssh://user@host:1234/srv/git/example

(source: https://stackoverflow.com/a/3596272/5350059)

check if directory is git repository without having to cd into it

::

git -C $dir_path rev-parse

(source: https://stackoverflow.com/a/39518382/5350059)

using a git command inside a cron job while using ssh key

#add those line at the top of script
export SSH_AGENT_PID=`ps -a | grep ssh-agent | grep -o -e [0-9][0-9][0-9][0-9]`
export SSH_AUTH_SOCK=`find /tmp/ -path '*keyring-*' -name '*ssh*' -print 2>/dev/null`

(source: https://stackoverflow.com/a/16580506)

make vim git default editor

git config --global core.editor "vim"

(source: https://stackoverflow.com/a/2596835/5350059)

git file location linux

git config --global -e
git config --system -e
git config --local -e

(source: https://stackoverflow.com/a/23134785/5350059)

git commit and push without output

git commit --quiet
git push --quiet

(source: https://stackoverflow.com/a/8943761/5350059)

get the current branch name in git

git rev-parse --abbrev-ref HEAD | grep -v ^HEAD$ || git rev-parse HEAD

(source: https://stackoverflow.com/a/46798693/5350059)

set proxy

git config --global http.proxy http://proxyuser:proxypwd@proxy.server.com:8080

change proxyuser to your proxy user change proxypwd to your proxy password change proxy.server.com to the URL of your proxy server change 8080 to the proxy port configured on your proxy server

to get current proxy settings:

git config --global --get http.proxy

to unset proxy:

git config --global --unset http.proxy

(source: https://stackoverflow.com/a/19213999)

Changing author info

to change the author info ie. name and email we need to use the git fil command. First save the following to a file.:

#!/bin/sh

git filter-branch --env-filter '

OLD_EMAIL="your-old-email@example.com"
CORRECT_NAME="Your Correct Name"
CORRECT_EMAIL="your-correct-email@example.com"

if [ "$GIT_COMMITTER_EMAIL" = "$OLD_EMAIL" ]
then
    export GIT_COMMITTER_NAME="$CORRECT_NAME"
    export GIT_COMMITTER_EMAIL="$CORRECT_EMAIL"
fi
if [ "$GIT_AUTHOR_EMAIL" = "$OLD_EMAIL" ]
then
    export GIT_AUTHOR_NAME="$CORRECT_NAME"
    export GIT_AUTHOR_EMAIL="$CORRECT_EMAIL"
fi
' --tag-name-filter cat -- --branches --tags

We will save this in a file named filter_author_info.sh. We need the modify the OLD_EMAIL, CORRECT_NAME, and CORRECT_EMAIL to the match our expectation. Now we will change the file permission and run the script:

chmod +x filter_author_info.sh
bash filter_author_info.sh

Next we will review the new Git history for errors. Push the corrected history to remote repo:

git push --force --tags origin 'refs/heads/*'

And we are done.

(source: https://help.github.com/en/articles/changing-author-info)

commit message template

to set a custom commit message template:

git config commit.template /absolute/path/to/file

or

git config commit.template relative-path-from-repository-root

(source: https://stackoverflow.com/a/28948582/5350059)

rename local branch

to rename a local branch:

git branch -m <oldname> <newname>

(source: https://stackoverflow.com/a/6591218/5350059)

hide email address from commit log with GitHub provided email

we can hide out email address from commit log by using the GitHub provided email address:

git config --global user.email username@users.noreply.github.com

source: https://help.github.com/en/articles/setting-your-commit-email-address

undo last commit

to undo last commit:

git reset HEAD~

Then update remote:

git push origin master --force

source: https://stackoverflow.com/a/927386/5350059

generate patch

to generate patch and save it on a file:

git format-patch $brach_name_or_commit_hash --stdout > $filename.patch

source: https://stackoverflow.com/a/44950939/5350059

apply patch

to apply that patch file:

git apply --stat $filename.patch

source: https://stackoverflow.com/a/2250170/5350059

exclude files from git diff

to exclude files from git diff:

git diff -- . ':(exclude)filename'

for branch:

git diff branchname -- ':(exclude)filename'

s: https://stackoverflow.com/a/48651201/5350059

speed up git clone

unfortunately there is no way to speed up git clone like make -j but we can do a shallow clone:

git clone --depth 1 $REPO

https://stackoverflow.com/a/26957305/5350059

If we want the full clone just do:

git fetch --unshallow

https://stackoverflow.com/a/17937889/5350059

GPG sign old commits

to GPG sign old commits:

git rebase --exec 'git commit --amend --no-edit -n -S' -i $HASH

source: https://superuser.com/a/1123928

Source