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Linux Commands Reference

Learn Linux commands through practical examples. From file operations to text processing and system administration, this reference covers the commands developers need.

32
Commands
7
Categories
search
$grep -i

Quick Reference

popular-commands
$grep$find$ls$cat$sed$awk$chmod$curl

File Operations(8 commands)

ls

List directory contents

linux5 min read

cd

Navigate directories

linux4 min read

chmod

Change file permissions

linux7 min read

cp

Copy files and directories

linux5 min read

mv

Move and rename files

linux4 min read

rm

Remove files and directories

linux5 min read

mkdir

Create directories

linux4 min read

touch

Create files and update timestamps

linux4 min read

File Viewing(4 commands)

cat

Display and concatenate files

linux5 min read

head

Display the beginning of files

linux4 min read

tail

Display the end of files

linux5 min read

less

View file contents with pagination

linux5 min read

Search(2 commands)

grep

Master grep with practical examples for developers. Learn pattern matching, regex, and real-world use cases.

linux12 min read

find

Locate files and directories

linux7 min read

Text Processing(9 commands)

sed

Stream editor for text transformation

linux8 min read

awk

Text processing and data extraction

linux10 min read

xargs

Build commands from standard input

linux6 min read

echo

Display text and variables

linux4 min read

wc

Count lines, words, and characters

linux4 min read

sort

Sort lines of text files

linux5 min read

uniq

Filter duplicate lines

linux5 min read

cut

Extract columns from text

linux5 min read

diff

Compare files line by line

linux6 min read

Archive(1 commands)

tar

Create and extract archives

linux6 min read

Network(3 commands)

curl

Transfer data from URLs

linux8 min read

wget

Download files from the web

linux6 min read

ssh

Secure shell remote connections

linux9 min read

System(5 commands)

ps

Display running processes

linux6 min read

top

Real-time system monitoring

linux7 min read

kill

Terminate processes

linux5 min read

df

Display disk space usage

linux5 min read

du

Estimate file and directory space usage

linux5 min read