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Category	Commands
Basic Linux Commands	ls cd pwd mkdir rm rmdir cat zcat touch head tail less more cp mv wc ln cut tee sort clear diff df du
Networking Commands	curl wget ssh ping netstat ifconfig traceroute tracepath mtr nslookup telnet hostname ip iwconfig ss arp dig whois ifplugstatus route nmap tcpdump nc scp rsync iptables netcat host
System Level Commands	uname uptime date who whoami which id sudo shutdown reboot apt yum dnf pacman portage
User & Group Management	sudo useradd whoami su passwd userdel groupadd gpasswd groupdel
File Permissions	ls chmod chown chgrp umask
Compression Commands	zip gzip gunzip tar untar
Pro Linux Commands	awk sed grep
Process Management	ps top fuser kill nohup free vmstat
Linux Volume Commands	fdisk parted lsblk mount umount mkfs fsck lvm blkid findmnt

Linux Commands

Basic Linux Commands

View detailed basic Linux commands guide

Command	Description
ls	List directory contents
cd	Change directory
pwd	Print working directory
mkdir	Make directories
rm	Remove files or directories
rmdir	Remove empty directories
cat	Concatenate and display files
zcat	Display compressed files
touch	Create empty files or update timestamps
head	Display first lines of files
tail	Display last lines of files
less	View file contents page by page
more	View file contents one screen at a time
cp	Copy files and directories
mv	Move/rename files and directories
wc	Print word, line, character, and byte counts
ln	Create hard and soft links
cut	Remove sections from lines of files
tee	Read from stdin and write to stdout and files
sort	Sort lines in text files
clear	Clear terminal screen
diff	Compare files line by line
df	Report file system disk space usage
du	Estimate file space usage

Networking Commands

View detailed networking commands guide

Command	Description
curl	Transfer data from or to a server using various protocols
wget	Download files from the web, supports HTTP, HTTPS, and FTP
ssh	Secure Shell for remote system access
ping	Test network connectivity to a host by sending ICMP packets
netstat	Display network connections, routing tables, and interface statistics
ifconfig	Configure and display network interface parameters
traceroute	Display the route packets take to reach a network host
tracepath	Similar to traceroute but doesn't require root privileges
mtr	Combine ping and traceroute functionality in a real-time interface
nslookup	Query DNS servers for domain name or IP address mapping
telnet	Connect to remote systems using the TELNET protocol
hostname	Show or set the system's host name
ip	Show/manipulate routing, devices, policy routing and tunnels
iwconfig	Configure wireless network interfaces
ss	Display socket statistics, replacement for netstat
arp	View or modify the system's ARP cache
dig	DNS lookup utility, test DNS name servers
whois	Query WHOIS information for domains
ifplugstatus	Check if network cables are plugged in
route	Show/manipulate IP routing table
nmap	Network exploration tool and security scanner
tcpdump	Capture and analyze network traffic
nc	Netcat - Swiss army knife for TCP/IP
scp	Securely copy files between hosts
rsync	Fast, versatile file copying and synchronization
iptables	Configure IP packet filter rules
netcat	Read and write data across network connections
host	DNS lookup utility

System Level Commands

View detailed system commands guide

Command	Description
uname	Display system information including kernel version
uptime	Show how long the system has been running
date	Display or set system date and time
who	Show who is logged on
whoami	Print effective user ID
which	Locate a command in system PATH
id	Print user and group information
sudo	Execute a command as another user (typically root)
shutdown	Bring the system down safely
reboot	Restart the system
apt	Package management for Debian-based systems
yum	Package management for older RHEL-based systems
dnf	Next generation package management for RHEL-based systems
pacman	Package management for Arch Linux
portage	Package management for Gentoo Linux

User & Group Management Commands

View detailed user management guide

Command	Description
sudo	Execute commands with superuser privileges
useradd	Create a new user account
whoami	Display current user name
su	Switch to another user account
passwd	Change user password
userdel	Delete a user account
groupadd	Create a new group
gpasswd	Administer groups
groupdel	Delete a group

File Permission Commands

View detailed file permissions guide

Command	Description
ls	List directory contents with permissions
chmod	Change file mode/permissions
chown	Change file owner and group
chgrp	Change group ownership
umask	Set default permissions mask

Compression Commands

View detailed compression commands guide

Command	Description
zip	Package and compress files
gzip	Compress files using Lempel-Ziv coding
gunzip	Decompress files compressed with gzip
tar	Tape archiving utility
untar	Extract files from tar archive

Pro Linux Commands

View detailed pro Linux commands guide

Command	Description
awk	Pattern scanning and text processing language
sed	Stream editor for filtering and transforming text
grep	Search text patterns using regular expressions

Process Management Commands

View detailed process management guide

Command	Description
ps	Report process status
top	Display and update sorted process information
fuser	Identify processes using files or sockets
kill	Terminate processes
nohup	Run a command immune to hangups
free	Display amount of free and used memory
vmstat	Report virtual memory statistics

Linux Volume Commands

View detailed volume commands guide

Command	Description
fdisk	Manipulate disk partition table
parted	A more powerful partition manipulation tool
lsblk	List block devices
mount	Mount a filesystem
umount	Unmount a filesystem
mkfs	Build a Linux filesystem
fsck	Check and repair a Linux filesystem
lvm	Logical Volume Manager tools
blkid	Locate/print block device attributes
findmnt	Find a filesystem