Git(Hub)

sudo apt-get install git

git --version
git --help

usage: git [-v | --version] [-h | --help] [-C <path>] [-c <name>=<value>]
           [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
           [-p | --paginate | -P | --no-pager] [--no-replace-objects] [--no-lazy-fetch]
           [--no-optional-locks] [--no-advice] [--bare] [--git-dir=<path>]
           [--work-tree=<path>] [--namespace=<name>] [--config-env=<name>=<envvar>]
           <command> [<args>]

These are common Git commands used in various situations:

start a working area (see also: git help tutorial)
   clone      Clone a repository into a new directory
   init       Create an empty Git repository or reinitialize an existing one

work on the current change (see also: git help everyday)
   add        Add file contents to the index
   mv         Move or rename a file, a directory, or a symlink
   restore    Restore working tree files
   rm         Remove files from the working tree and from the index

examine the history and state (see also: git help revisions)
   bisect     Use binary search to find the commit that introduced a bug
   diff       Show changes between commits, commit and working tree, etc
   grep       Print lines matching a pattern
   log        Show commit logs
   show       Show various types of objects
   status     Show the working tree status

grow, mark and tweak your common history
   backfill   Download missing objects in a partial clone
   branch     List, create, or delete branches
   commit     Record changes to the repository
   merge      Join two or more development histories together
   rebase     Reapply commits on top of another base tip
   reset      Reset current HEAD to the specified state
   switch     Switch branches
   tag        Create, list, delete or verify a tag object signed with GPG

collaborate (see also: git help workflows)
   fetch      Download objects and refs from another repository
   pull       Fetch from and integrate with another repository or a local branch
   push       Update remote refs along with associated objects

'git help -a' and 'git help -g' list available subcommands and some
concept guides. See 'git help <command>' or 'git help <concept>'
to read about a specific subcommand or concept.
See 'git help git' for an overview of the system.

## Configure User Information
git config --global user.email "<email>"
git config --global user.name "<username>"

## Configure User Information for Individual Repository
git config --local user.email "<email>"
git config --local user.name "<username>"

## Configure User Information for GitHub
git config --global user.email "12345678+<username>@users.noreply.github.com"
git config --global user.name "<username>"

## Config Confirmation
git config list

## Unset Configuration
git config --unset user.name
git config --unset --global user.name

git config --global alias.st 'status'
git config --global alias.br 'branch'
git config --global alias.sw 'switch'
git config --global alias.ci 'commit'
git config --global alias.ad 'add'
git config --global alias.pl 'pull'
git config --global alias.ps 'push'
git config --global alias.mg 'merge'
git config --global alias.df 'diff'
git config --global alias.lg "log --oneline --graph --decorate --branches --tags --remotes --all"

## Clone a specific branch
git clone [-b <branch>] <repository>
git clone [-b <branch>] <repository> [<directory>]
git clone [-b <branch>] https://github.com/<repository>

git clone [repository]
git branch -M main
git commit -m "initial commit" --allow-empty
git push

git init -b main
git commit -m "initial commit" --allow-empty
git remote add origin [repository]
git push -u origin main

git status
git branch
git branch -a
git tag
git tag -l
git log
git show
git diff

touch README.md
git add README.md
git commit -m "<message>"
git push

## Check Status
git status

## Stage All Files
git add .

## Stage Individual File
git add <file>

## Reset Staged Files
git reset

touch .gitignore

## Branch Confirmation
git branch
git branch -a

## New Branch
git branch <branch>

## Set Upstream Branch
git push -u origin <branch>
git branch -u origin/<branch> <branch>

## Switch Current Branch
git switch <branch>

## Rename Branch
git branch -m <old_branch> <new_branch>

## Remove Branch
git branch -d <branch>
git branch -D <branch>
git push --delete origin <branch>

git switch <branch>
git merge <merge_branch>

## Update Main Branch
git switch main
git pull

## Switch to (or Create New) Develop Branch
git switch [-c] <develop_branch>

## Change Develop Branch
git add .
git commit -m "<message>"

## Push Results to Remote Repository (as needed)
git push -u origin <develop_branch>

## Merge Develop Branch into Main Branch
git switch main
git pull
git merge <develop_branch>

## Push Merged Results to Remote Repository
git push origin main

## Remove Develop Branch
git branch -d <develop_branch>

https://docs.github.com/pull-requests

## 1. Fork public repository as a private repository: github.com
## https://docs.github.com/get-started/quickstart/fork-a-repo

## 2. Clone forked repository to local machine: remote > local
git clone https://github.com/[user]/[repository(forked)]
cd [repository(forked)]

## 3. Generating new branch for development: local
git checkout -b dev
#git branch dev origin/master
#git checkout dev

## 4. Update content(s) of new branch for development: local
... depending on your project ...

## 5. Adding new or changed files to Git staging area: local
git add updated.sh

## 6. Saving change(s): local
git commit -m "[comment]"

## 7. Updating remote repository: local > remote
git push origin dev

## 8. Pull Request: github.com
## https://docs.github.com/pull-requests

## remote: Support for password authentication was removed on August 13, 2021.

## Login to GitHub
## Settings > Developer settings > Personal access tokens (classic) > Generate new token (classic)
## Use generated token as a password

## remote: error: GH007: Your push would publish a private email address.
## remote: You can make your email public or disable this protection by visiting:
## remote: http://github.com/settings/emails

## Login to GitHub
## Settings > Emails > Block command line pushes that expose my email = Off

https://zenn.dev/k_tana/articles/2023-05_basic-git-learning
https://qiita.com/shimotaroo/items/ed08d76447144d566637
https://qiita.com/konweb/items/621722f67fdd8f86a017
https://qiita.com/samurai_runner/items/7442521bce2d6ac9330b
https://tech-blog.rakus.co.jp/entry/20200529/git
https://ios-docs.dev/20210813support-for-password/
https://qiita.com/setonao/items/28749762c0bc1fbbf502
https://qiita.com/atsymd/items/a1ff5a496b78f47ce80e
https://qiita.com/satoshi1335/items/ead109412430a078feaa
https://zenn.dev/kaluna_hart/articles/github-email-error