Day 12 Task: Linux and GitHub Cheat-Sheet

## Finally!! 🎉

I have completed the Linux & Git-GitHub hands-on and I hope you also have learned something interesting from it.🙌📝✏️

In the previous tasks, I have uploaded the DevOps basics, Linux, shell Scripting, Git & GitHub. Now in these tasks, we are learning Linux and GitHub commands.

Linux Commands:

# To check your present working directory :-

# List all the files or directories :-

# Lists hidden files or directories :-

# Long listing format :-

# Create a new directory :- mkdir <directory_name>

# Multiple directory creation :- mkdir -p A B C D

# Remove directory :- rmdir <directory_name>

# Remove multiple directories :- rm -rf <directory_name>

# Remove files :- rm <file_name>

# change directory :- cd <path_where_to_navigate>

# create an empty file :- touch <file_name>

# Copy file :- cp <source_path> <destination_path>

# Move file :- mv <source_path> <destination_path>

# To write some content inside a file :-

echo <some msg> > <file_name>

# display contents of a file :- cat <file_name>

# show previous commands/operations performed in shell :-

# To search a word (string in a file) :- grep "string" <filename>

# Return the specified number of lines from the top :- head

# Return the specified number of lines from the bottom :- tail

# To show disk space :- df - H

File permissions:

# To change permission of the file :-

chmod <permission> <file_name>

Example :- chmod 700 a.txt #readwriteexeute to user only.

Now, we are changing the permission of abc.txt1

# To change file or directory ownership :- sudo chown <username> <filename>

# To change group ownership :- chgrp <group_name> <file_name>

Access Control List:

setfacl and getfacl are used for setting up ACL and showing ACL respectively.

# For checking ACL permission :- getfacl <name of file or directory>

# For set ACL permission to user :- setfacl -m u:user:permissions /path_to_file

User management:

# To create a new user :- sudo useradd <user_name>

# To set a password for user :- sudo passwd <user_name>

# To delete a Linux user :- sudo userdel <user_name>

# For add group account :- sudo groupadd <group_name>

After Linux cheat sheet, now let us discuss the Git cheat sheet

# Initialize an empty git repository: transforms the current directory into a Git list of all remote repositories that are currently connected to your local repository.

git init

# Clone an existing git repository:

git clone <repository_url>

# Add files and Moves changes from the working directory to the staging area:

git add <file_name>

# Add all current directory files to git :

git add .

# Commit all the staged files to git.

git commit -m "commit_message"

# To show the status of your git repository:

git status

Git Branch :-

# To list all of the branches:

git branch

# Create a new branch:

git branch <branch_name>

# For going to specific branch:

git checkout <branch_name>

# for creating and going to that branch:

git checkout -b <branch_name>

# For deleting branch:

git checkout -d <branch_name>

Remote origin :-

# list of all remote repositories that are currently connected to local repository:

git remote -v

# To add remote origin URL:

git remote add origin <remote_git_url>

# To remove remote origin URL:

git remote remove origin

# To upload local repository content to a remote repository:

git push origin <branch_name>

# To pull your remote repository content to local repository:

git pull origin <branch_name>

# To fetch down all the branches from that Git remote:

git fetch

# To check your git commits and all logs:

git log

git configuration :-

# To set author name to be used for all commits by the current user :

git config --global user.name <your_username>

# To set author email to be used for all commits by the current user:

git config --global user.email <your_email>

# to merge two branches in Git:

git merge <branch_name>

Cherry-pick :-

# Merge just one specific commit from another branch to your current branch:

git cherry-pick [commit_id]

git revert :-

# Undo a single given commit, without modifying commits that come after it:

git revert <commit_id>

git reset :-

# Go back to specific commit:

git reset <commit_id>

git rebase :-

# To rebase all the commits between another branch and the current branch state:

git rebase <other_branch_name>

Temporary commits :-

# To save modified and staged changes:

git stash

# list stack-order of stashed file changes:

git stash list

# write working from top of stash stack :-

git stash pop

Thank you for reading! Hopefully this help someone out there!

Happy Learning (Sajid Perwaiz) 🙂