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Git

Table of Contents

Set up ▶️

This commands will be useful to set up your project/directory

  1. .gitignore
  2. Create branch

Lifecycle 🔄

This commands will be useful in the lifecycle project

  1. Modifying Commits

.gitignore

# ignore all .a files
*.a

# but do track lib.a, even though you're ignoring .a files above
!lib.a

# only ignore the TODO file in the current directory, not subdir/TODO
/TODO

# ignore all files in any directory named build
build/

# ignore doc/notes.txt, but not doc/server/arch.txt
doc/*.txt

# ignore all .pdf files in the doc/ directory and any of its subdirectories
doc/**/*.pdf

Create Branch

  1. First, check in which branch you are right now:
git branch

You'll get a list of the branchs available, the branch with an * next to it, is the branch you are working on.

  1. Then, create a new branch:
git branch name_of_the_branch_to_create
  1. Move to the new branch created:
git checkout name_of_the_branch_to_create
  1. You can do step 2 and 3 by one command:
git checkout -b name_of_the_branch_to_create

Modifying Commits

Changing the last commit message

$ git commit --amend

Add files to last commit

  • edit the file(s)
  • save the file(s)
  • stage the file(s)
  • and run git commit --amend

Reverse a previously made commit, undo the changes

$ git revert <SHA-of-commit-to-revert>

Reset vs Revert

At first glance, resetting might seem coincidentally close to reverting, but they are actually quite different. Reverting creates a new commit that reverts or undos a previous commit. Resetting, on the other hand, erases commits!

Before I do any resetting, I usually create a backup branch on the most-recent commit so that I can get back to the commits if I make a mistake.

Change the git upstream url from SSH to HTTPS or back

$ git remote set-url origin [email protected]