Day 14: Create a Linux & Git-GitHub Cheat Sheet

On day 14, I consolidated all the important Linux and Git commands I have been learning, into a comprehensive Cheat sheet.

A cheat Sheet is a concise document or reference guide that summarizes key information, commands or syntax for a specific tool, technology or topic.

Linux Commands

File Navigation

Command	Description	Example
pwd	Print working directory	pwd
ls	List directory contents	ls -la(list all files with details)
cd	Change directory	cd Documents
mkdir	Create directory	mkdir new_folder
rmdir	Remove empty directory	rmdir old_folder
touch	Create empty file	touch file.txt

File Operations

Command	Description	Example
cp	Copy files/directories	cp file.txt backup/
mv	Move/rename files	mv old.txt new.txt
rm	Remove files/directories	rm file.txtorrm -r directory
cat	Display file contents	cat file.txt
head	Display first lines of file	head -n 10 file.txt
tail	Display last lines of file	tail -n 10 file.txt
less	View file with pagination	less large_file.txt

File Permissions

Command	Description	Example
chmod	Change file permissions	chmod 755 script.sh
chown	Change file owner	chown user:group file.txt

Permission numbers: 4 (read), 2 (write), 1 (execute). Add them together for combined permissions.
e.g., 755 = rwx for owner, r-x for group and others

Text Processing

Command	Description	Example
grep	Search text patterns	grep "pattern" file.txt
sed	Stream editor	sed 's/old/new/g' file.txt
awk	Text processing tool	awk '{print $1}' file.txt
sort	Sort text	sort file.txt
uniq	Report unique lines	uniq -c file.txt
wc	Count lines, words, bytes	wc -l file.txt

Package Management

Debian/Ubuntu	Description
apt update	Update package lists
apt upgrade	Upgrade installed packages
apt install [package]	Install package
apt remove [package]	Remove package

Network Commands

Command	Description	Example
ping	Test network connectivity	ping google.com
ifconfig/ip	Network interface config	ip addr show
netstat	Network statistics	netstat -tuln
ssh	Secure shell	ssh user@hostname
scp	Secure copy	scp file.txt user@host:/path
wget	Download files	wget https://example.com/file
curl	Transfer data	curl -O https://example.com/file

Git Commands

Configuration

Command	Description
git config --global user.name "Name"	Set global username
git config --global user.email "[e-mail]"	Set global email
git config --list	List all configurations

Repository Setup

Command	Description
git init	Initialize a new repository
git clone [url]	Clone a repository

Basic Commands

Command	Description
git status	Check repository status
git add [file]	Add file to staging area
git add .	Add all changes to staging area
git commit -m "message"	Commit staged changes
git push	Push commits to remote
git pull	Pull changes from remote

Branching

Command	Description
git branch	List branches
git branch [name]	Create new branch
git checkout [branch]	Switch to branch
git checkout -b [branch]	Create and switch to branch
git merge [branch]	Merge branch into current branch
git branch -d [branch]	Delete branch

Here's a downloadable Pdf link to have the Cheat Sheet saved for whenever you need it.