ls - The most frequently used command in Linux to list directories

pwd - Print working directory command in Linux

cd - Linux command to navigate through directories

mkdir - Command used to create directories in Linux

mv - Move or rename files in Linux

cp - Similar usage as mv but for copying files in Linux

rm - Delete files or directories

touch - Create blank/empty files

ln - Create symbolic links (shortcuts) to other files

cat - Display file contents on the terminal

clear - Clear the terminal display

echo - Print any text that follows the command

less - Linux command to display paged outputs in the terminal

man - Access manual pages for all Linux commands

uname - Linux command to get basic information about the OS

whoami - Get the active username

tar - Command to extract and compress files in Linux

grep - Search for a string within an output

head - Return the specified number of lines from the top

tail - Return the specified number of lines from the bottom

diff - Find the difference between two files

cmp - Allows you to check if two files are identical

comm - Combines the functionality of diff and cmp

sort - Linux command to sort the content of a file while outputting

export - Export environment variables in Linux

zip - Zip files in Linux

unzip - Unzip files in Linux

ssh - Secure Shell command in Linux

service - Linux command to start and stop services

ps - Display active processes

kill and killall - Kill active processes by process ID or name

df - Display disk filesystem information

mount - Mount file systems in Linux

chmod - Command to change file permissions

chown - Command for granting ownership of files or folders

ifconfig - Display network interfaces and IP addresses

traceroute - Trace all the network hops to reach the destination

wget - Direct download files from the internet

ufw - Firewall command

iptables - Base firewall for all other firewall utilities to interface with

apt, pacman, yum, rpm - Package managers depending on the distro

sudo - Command to escalate privileges in Linux

cal - View a command-line calendar

alias - Create custom shortcuts for your regularly used commands

dd - Majorly used for creating bootable USB sticks

whereis - Locate the binary, source, and manual pages for a command

whatis - Find what a command is used for

top - View active processes live with their system usage

useradd and usermod - Add new user or change existing users data

passwd - Create or update passwords for existing users

Git & Github Command

1 . git config

Usage: git config –global user.name “[name]”

Usage: git config –global user.email “[email address]”

git init

Usage: git init [repository name]

This command is used to start a new repository.

git clone

Usage: git clone [url]

This command is used to obtain a repository from an existing URL.

git add

Usage: git add [file]

This command adds a file to the staging area.

Usage: git add *

This command adds one or more to the staging area.

git commit

Usage: git commit -m “[ Type in the commit message]”

This command records or snapshots the file permanently in the version history.

Usage: git commit -a

This command commits any files you’ve added with the git add command and also commits any files you’ve changed since then.

git diff

Usage: git diff

This command shows the file differences which are not yet staged.

Usage: git diff –staged

This command shows the differences between the files in the staging area and the latest version present.

Usage: git diff [first branch] [second branch]

This command shows the differences between the two branches mentioned.

git reset

Usage: git reset [file]

This command unstages the file, but it preserves the file contents.

Usage: git reset [commit]

This command undoes all the commits after the specified commit and preserves the changes locally.

Usage: git reset –hard [commit]

This command discards all history and goes back to the specified commit.

git status

Usage: git status

This command lists all the files that have to be committed.

git rm

Usage: git rm [file]

This command deletes the file from your working directory and stages the deletion.

git log

Usage: git log

This command is used to list the version history for the current branch.

Usage: git log –follow[file]

This command lists version history for a file, including the renaming of files also.

git show

Usage: git show [commit]

This command shows the metadata and content changes of the specified commit.

git tag

Usage: git tag [commitID]

This command is used to give tags to the specified commit.

git branch

Usage: git branch

This command lists all the local branches in the current repository.

Usage: git branch [branch name]

This command creates a new branch.

Usage: git branch -d [branch name]

This command deletes the feature branch.

git checkout

Usage: git checkout [branch name]

This command is used to switch from one branch to another.

Usage: git checkout -b [branch name]

This command creates a new branch and also switches to it.

git merge

git merge [branch name]

Usage:

This command merges the specified branch’s history into the current branch.

git remote

Usage: git remote add [variable name] [Remote Server Link]

This command is used to connect your local repository to the remote server.

git push

Usage: git push [variable name] master

This command sends the committed changes of master branch to your remote repository.

Usage: git push [variable name] [branch]

This command sends the branch commits to your remote repository.

Usage: git push –all [variable name]

This command pushes all branches to your remote repository.

Usage: git push [variable name] :[branch name]

This command deletes a branch on your remote repository.

git pull

Usage: git pull [Repository Link]

This command fetches and merges changes on the remote server to your working directory.

git stash

Usage: git stash save

This command temporarily stores all the modified tracked files.

Usage: git stash pop

This command restores the most recently stashed files.

Usage: git stash list

This command lists all stashed changesets.

Usage: git stash drop

This command discards the most recently stashed changeset.