My Git Action Sets & Tutorials

git_action_set_tutor.md

My Git Action Sets & Tutorial

Init the git repo

• git clone <url> [path]
• git init

Trouble-Free Actions

• git status
• git log
  • git log --name-status: show filename with modification status
  • git log --stat: show filename with more info
• git diff <file>
• git diff <commit_or_branch> <commit_or_branch>
• git diff -–name-only <commit_or_branch> <commit_or_branch>

make progress

1. git status first, see if you are in trouble
2. git add . to stage all modifications
3. git commit -m "<message>" to wrap changes and push the HEAD to new progress
4. git push to send changes to the cloud

get progress from remote

• git pull Grab progress from remote, auto merge when theres changes on local
• git pull --rebase Same as git pull but use rebase when theres changes on local

4 Ways to Avoid Merge Commits in Git

Discard change on a file

• git checkout <path>

Change location

• git checkout <branch_or_commit>

Create a new branch

• git checkout -b <new_branch_name>
• git branch -u <remote>/<new_branch_name> [new_branch_name] to set (bind) the remote branch for push and pull

Config of the repo

• git remote -v: see the remote registry of the repo
• git remote add|rm <name> <url>
• git config ...

Showing the branch graph beautifully

• git log --oneline --graph --decorate --all

Apply a diff between two commit or branch to another place (copy diff):

• git diff <old_commit_or_branch> <new_commit_or_branch> > my.patch
• git apply my.patch

Change the last commit info (i.e. message)

• git commit --amend

remove file and commit from history (assume tree: R–A-removal_target-B- )

• git checkout <B> to detach head and move to A
• git reset --soft <A> to move HEAD to the old commit, but leave the index and working tree as for the commit kept
• git commit -C <B> to Redo the commit kept re-using the commit message, but now on top of the old commit
• git rebase --onto HEAD <B> <branch_name> to re-apply everything from the olds onwards onto this new place
• git push --force to overwrite remote repo

如何移除-commit-歷史紀錄
Git-Tools-Rewriting-History

About git reset

First the following things need to be defined:

• HEAD: the history, the current branch is pointing at
• INDEX / Stage: the cache, the added changes
• Working directory: the code and files in your directory

Then

• git reset --soft [target]: set HEAD only
• git reset [--mixed] [target]: set HEAD and INDEX
• git reset --hard [target]: set HEAD, INDEX and Working directory
• git checkout <history_node> set HEAD, INDEX and Working directory, but leaving the original branch
  • So it is a detached state, you can go back by git checkout <original_branch>
  • Or create a branch by git checkout -b <branch_name>, I found git checkout <history_node> -b <branch_name> will do the two steps together

difference in git reset

Git submodule

• When cloning a repo from remote, the submodule is not initualized and the submodule directory is empty. To solve this
  • add --recursive option when cloning to clone submodules in the target repo, for example: git clone --recursive <url>
  • use git submodule init and git submodule update --recursive if you already cloned and found that the submodule is empty
• git submodule add <url> <path> to add a submodule
• git submodule foreach --recursive git pull origin master to pull the latest code for each submodule
• to delete the submodule, it is required to do it manually. Edit .gitmodules and .git/config to remove related information and remove the files in working directory

Git Submodule 用法筆記

Git Tutorials I like

• Code Smart, Don't Code hard by crboy

感恩西瓜，讚嘆西瓜！