Why not make this last blog interesting 🤠

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

Let’s make a well-articulated and documented "cheat sheet" 📝 with all the commands we've learned so far in Linux, Git & GitHub and brief info about its usage.

Let’s show us your knowledge mixed with your creativity😎

Linux

Command	Description
`date`	Display the current system date and time
`hostname`	Display the hostname of the system
`ifconfig`	Display the IP and Mac Address of the system
`w`	Display currently logged in users in the system
`free -m`	Display free and used memory in the system
`ls`	List all files and directories in the current working directory
`ls -la`	List all files and directories including, hidden files and other information like permissions, size, and owner
`cd`	Change the directory to the home directory
`cd ..`	Change the directory to one level up
`cat filename`	Display the content of the file
`cat file1 file2 > file3`	Combine two files named file1 and file2 and store the output in a new file file3
`tail filename`	Display the last 10 lines of a file
`head filename`	Display the first 10 lines of a file
`mv oldfile newfile`	Rename a file
`rm filename`	Delete a file
`mkdir dirname`	Create a directory
`rm -rf dirname`	Remove a directory
`history`	Print a history list of all commands
`clear`	Clear the terminal
`shutdown -h now`	Shut down the system
`reboot`	Restart the system

File Permission Commands

Command	Description
`ls -l filename`	Check the current permission of any file
`chmod 777 filename`	Assign full(read, write, and execute) permission to everyone
`chmod -R 777 dirname`	Assign full permission to the directory and all sub-directories
`chmod 766 filename`	Assign full permission to the owner, and read and write permission to group and others
`chmod -x filename`	Remove the execution permission of any file
`chown username filename`	Change the ownership of a file
`chown user:group filename`	Change the owner and group ownership of a file
`chown -R user:group dirname`	Change the owner and group ownership of the directory and all sub-directories

🎃User and Group Management Commands

Command	Description
`w`	Display all login users
`useradd username`	Add a new user account
`userdel -r username`	Delete a user account
`usermod [option] username`	Change the user account information including, group, home directory, shell, expiration date
`usermod -aG groupname username`	Add a user to a specific group
`groupadd groupname`	Create a new group
`groupdel groupname`	Remove a group
`last`	Display information of the last login user
`id`	Display UID and GID of the current user

👾 Package Management Command

Command	Description
`apt-get install packagename`	Install the package on Debian based distributions
`apt-get remove packagename`	Remove a package on Debian based distributions
`dpkg -l	grep -i installed`
`dpkg -i packagename.deb`	Install .deb package
`apt-get update`	Update the repository on Debian based distributions
`apt-get upgrade packagename`	Upgrade a specific package on Debian based distributions
`apt-get autoremove`	Remove all unwanted packages on Debian based distributions
`yum install packagename`	Install the package on RPM-based distributions
`yum remove packagename`	Remove a package on RPM-based distributions
`yum update`	Update all system packages to the latest version on RPM-based distributions
`yum list --installed`	List all installed packages on RPM-based distributions
`yum list --available`	List all available packages on RPM-based distributions

Compress and Uncompress Commands

Tar, Zip, and Unzip are the most popular command-line utility in Linux used to compress and uncompress files and directories.

Command	Description
`tar -cvf filename.tar filename`	Compress a file in the Tar archive
`tar -xvf filename.tar`	Uncompress a Tar file
`tar -tvf filename.tar`	List the content of the Tar file
`tar -xvf filename.tar file1.txt`	Untar a single file from Tar file
`tar -rvf filename.tar file2.txt`	Add a file to the Tar file
`zip` `filename.zip` `filename`	Compress a single file to a zip
`zip` `filename.zip` `file1.txt file2.txt file3.txt`	Compress multiple files to a zip
`zip -u` `filename.zip` `file4.txt`	Add a file to a zip file
`zip -d` `filename.zip` `file4.txt`	Delete a file from a zip file
`unzip -l` `filename.zip`	Display the content of zip archive file
`unzip` `filename.zip`	Unzip a file
`unzip` `filename.zip` `-d /dirname`	Unzip a file to a specific directory

🕊Git

Command	Description
`git init`	initialize an existing directory as a Git repository
`git status`	check git status
`git add .`	add all the files
`git add [filename]`	add a specific file as it looks now to your next commit (stage)
`git commit -m "[descriptive_message]"`	commit your staged content with a descriptive message
`git remote -v`	get the URLs of the Push and Fetch of remote repository
`git log`
`(--oneline --pretty)`	show the commit history for the currently active branch
`git config --global user.name "<username>"`	set a name that is identifiable for credit when review version history
`git config --global user.email "<email_id>"`	set an email address that will be associated with each history marker
`git clone [url]`	retrieve an entire repository from a hosted location via URL
`git push [alias] [branch]`	Transmit local branch commits to the remote repository branch
`git remote add [alias] [url]`	add a git URL as an alias
`git stash`	Save modified and staged changes temporarily
`git stash pop`	write working from top of the stash stack
`git revert [commit hash]`	used to undo any undesired changes
`git diff`	diff of what is changed but not staged
`git diff --staged`	diff of what is staged but not yet committed
`git branch`	list your branches. a * will appear next to the currently active branch
`git branch -b [new_branch]`	create a new branch at the current commit and switch to that branch
`git merge [alias] [branch]`	merge a remote branch into your current branch to bring it up to date
`git fetch [alias]`	fetch down all the branches from that Git remote
`git pull`	fetch and merge any commits from the tracking remote branch
`git rebase [branch]`	apply any commits of current branch ahead of specified one
`git reset --hard [commit hash]`	clear staging area, rewrite working tree from specified commit

.... I will keep updating this page as I learn more :) STAY TUNED!! 😈

The last taskkk .. . on Git, GitHub & Linux!! 🎬

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