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Guide for Git

- All paths to .gitconfig​

There are 3 Levels of .gitconfig: project, global & system.
The .gitconfig, on all operating machines, is found at:

# - Project Level
code .git/config

# - Global Level
code ~/.gitconfig

# - System Level (What about windows?)
code /etc/gitconfig

I always use the gitconfig in the global level.
That's where I usually put my "globally" configs.
So like user.name, user.email, all of my aliases, the git-split-diffs, etc.

As of today, here's how my .gitconfig looks:

[alias]
	logs = log --graph --oneline --decorate
	df = diff HEAD
	ck = checkout
	pop = stash pop
	apply = stash apply
	name = rev-parse --abbrev-ref HEAD
	unstage = restore --staged .
	s = status
	comit = commit
	amend = commit --amend --no-edit
[user]
	name = Tal Kohavy
	email = talkohavy@gmail.com
[core]
	pager = git-split-diffs --color | less -RF

- git-split-diffs​

git-split-diffs is a very cool diff tool.

Get the the most powerful syntax highlighting git-diff in your terminal. It is GitHub style, with split view (side by side).

npm install -g git-split-diffs

git config --global core.pager "git-split-diffs --color | less -RFX"

Enable scrolling in the terminal:

git config --global core.pager "git-split-diffs --color | less -+LFX"

Narrow terminals:

Split diffs can be hard to read on narrow terminals, so we revert to unified diffs if we cannot fit two lines of min-line-width on screen. This value is configurable:

git config --global split-diffs.min-line-width 40

This defaults to 80, so screens below 160 characters will display unified diffs. Set it to 0 to always show split diffs.

- Command 1: remote​

Description

The remote sub-command has 3 useful sub-commands:

  1. add
  2. remove
  3. set-url

The add command fails when name already exists. The set-url command fails when name doesn't exist.

The set-url command is useful in cases you made a typo on the URL of some existing name.

origin is the default name of your remote git, and is selected by default when you run a git push or git pull. This means you're basically running git push origin behind the scenes.

I will demonstrate some useful use-cases with it down below.

- remote: List all remote urls​

git remote -v

- remote: Remove a remote by name​

git remote rm origin

Or...

git remote remove origin

- remote: Add new remote origin url​

(provide a name & a URL. If name already exists, throws an error)

git remote add origin PASTE_URL_HERE

- remote: Update current existing remote​

You'll need to provide 2 things:

  • a name
  • a new URL.

If name doesn't exist, it throws an error.

git remote set-url origin PASTE_URL_HERE

- Command 2: config​

Description

You can use the config command to set up things like the user.name, user.email. And why should you care about the user & email? Because without a user & an email you cannot perform commits!

- config: Get current remote origin url​

git config --get remote.origin.url

- config: Get/Set git user name & email​

Get:

# - Level 1: Project Level
git config --get user.name
git config --get user.email

# - Level 2: Global Level
git config --global --get user.name
git config --global --get user.email

# - Level 3: System Level
git config --system --get user.name
git config --system --get user.email

Set:

# - Level 1: Project Level
git config user.name "Tal Kohavy"
git config user.email "talkohavy@gmail.com"

# - Level 2: Global Level
git config --global user.name "Tal Kohavy"
git config --global user.email "talkohavy@gmail.com"

# - Level 3: System Level
git config --system user.name "Tal Kohavy"
git config --system user.email "talkohavy@gmail.com"

- config: Create an alias​

git config --global alias.logs "log --graph --oneline --decorate"
git logs

git config --global alias.ck "checkout"
git ck

git config --global alias.pop "stash pop"
git pop

git config --global alias.pop "stash apply"
git apply

git config --global alias.name "rev-parse --abbrev-ref HEAD"
git name

- branch: Rename a local branch​

git branch -m OLD_BRANCH_NAME NEW_BRANCH_NAME

Or just...

git branch -m NEW_BRANCH_NAME

if you want to rename the branch you are currently on.

- branch: Delete a local branch​

git branch --delete NAME_OF_BRANCH
caution

You can't delete the branch on which you're current standing on!
Check out from it if necessary.

- push: Delete a remote branch​

git push origin :REMOTE_BRANCH_NAME

- checkout: Reset 1 file​

git checkout HEAD -- src/client.js

- checkout: Branch out from an old commit​

git checkout -B BRANCH_NAME SHA_OF_COMMIT

or...

git checkout -B BRANCH_NAME HEAD~3

- clean: delete new files​

git clean -df

- commit: amend wrong author​

git commit --amend --author "Tal Kohavy <talkohavy@gmail.com>"