GIT & SSH Snippets

sudo apt install git

git config --global user.name FooBar
git config --global user.email foo@bar.ch

# create new ssh key pair

ssh-keygen

cat ~/.ssh/id_rsa.pub

Restore SSH Keys ¹

1. Change the file permission

sudo chown user:user ~/.ssh/id_rsa*
sudo chmod 600 ~/.ssh/id_rsa
sudo chmod 644 ~/.ssh/id_rsa.pub

2. (Re-)Start the ssh-agent

exec ssh-agent bash

3. Add your SSH private key to the ssh-agent

ssh-add ~/.ssh/id_rsa

Ignore changes from tracked files

Ignore all further changes, but you don't want git to remove current file from the repository:

git update-index --assume-unchanged <file>

... and reenable it again

git update-index --no-assume-unchanged <file>

Create new Repo with main Branch

echo "# asdfghjhgfdsa" >> README.md
git init
git add README.md
git commit -m "first commit"
git branch -M main
git remote add origin git@github.com:lebalz/<reponame>.git
git push -u origin main

Git Submodules

Sync Submodule

In order to add a Git submodule, use the git submodule add command and specify the URL of the Git remote repository to be included as a submodule.

git submodule add <remote_url> <destination_folder>

git submodule add https://github.com/project/project.git vendors

Pull Submodule

To pull a Git submodule, use the git submodule update command with the –init and the –recursive options.

git submodule update --init --recursive

Sync

In order to update an existing Git submodule, you need to execute the git submodule update with the –remote and the –merge option.

git submodule update --remote --merge

Footnotes

1. Source: Snippet by Colematt ↩