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Git

Setup

Git global setup

git config --global user.name "Prename Name"
git config --global user.email "email@example.com"

Just remove the --global flag for local setup.

Create a new repository

git clone https://user@github.com/user/repo.git
cd repo
touch README.md
git add README.md
git commit -m "add README"
git push -u origin main

Existing folder

cd existing_folder
git init
git remote add origin https://user@github.com/user/repo.git
git add .
git commit
git push -u origin main

Existing Git repository

cd existing_repo
git remote add origin https://user@github.com/user/repo.git
git push -u origin --all
git push -u origin --tags

Update remote location

git remote rm origin
git remote add origin <new-location>
git branch --set-upstream-to=origin/main main

Stop tracking file

git update-index --assume-unchanged [path]

Rename default branch of local clone

To update a local clone of a repository whose default branch name was changed (e.g. from master to main):

git branch -m master main
git fetch origin
git branch -u origin/main main
git remote set-head origin -a

Remove password prompt

Caution: this will store the password unencrypted on the disk! Only use if it's safe on your machine!

git config credential.helper store

Sign/verify commits

Use git commit -S by default for all commits

git config --global commit.gpgsign true

Set default key

git config --global user.signingkey <key-id>

In case GPG failed to sign data

export GPG_TTY=$(tty)

Tags

Add tag to specific commit

git tag -a v[version] [hash] -m "your tag description"

Show commits since last tag

git log $(git describe --tags --abbrev=0)..HEAD --oneline

Branches

Remove Branches

git branch -d local-branch-name
git remote prune origin

Submodules

Clone the main repository and automatically initialize and update all its submodules.

git clone --recurse-submodules https://your-repository.url

Or pull all submodules of the current repository, if you already cloned it (as they will not automatically retrieved by a git clone)

git submodule update --init --recursive