git-gui tool via
sudo apt-get install git-gui. But how do I start it? Trying with search or
git-gui command did not find and UI tool for Git.
In terminal type :
Make one commit and return to the shell when it is complete. This command returns a non-zero exit code if the window was closed in any way other than by making a commit.
Automatically enter the Amend Last Commit mode of the interface.
Behave as normal citool, but instead of making a commit simply terminate with a zero exit code. It still checks that the index does not contain any unmerged entries, so you can use it as a GUI version of git-mergetool.