Linux Commands Cheat Sheet: Key to Effortless Coding

HomepageServersEssential Linux Commands Cheat Sheet for Beginners

Linux command is a textual instruction entered into the command line interface of a Linux operating system to perform a specific operation. Any task in Linux can be accomplished through commands.

The command line interface is one of the defining features of the Linux operating system. It allows you to interact with the system by entering commands. You can type commands for all operations, simple to complex. In other words, commands enable you to control the development environment in Linux.

To ensure smooth workflow in this operating system, you must have the Linux commands at your fingertips. This is where a cheat sheet can help you.

In this blog, we share a Linux commands cheat sheet to simplify development for you.

Linux Commands Cheat Sheet: Essential Commands and Descriptions

When working with Linux servers, using commands is not an option but a necessity. However, there are hundreds of Linux commands, and memorising them is no small feat for developers. A Linux commands cheat sheet can save you time and keep frustrations at bay.

This cheat sheet covers essential Linux commands. The commands are organised into key categories for easy navigation. Whether you are a beginner or an experienced professional, this cheat sheet can help you operate Linux more efficiently.

File and Directory Operations Commands

File and directory management is an essential aspect of working in Linux. Use these commands to operate files and directories from the terminal.

Command	Description
ls	List files and directories
ls -a	List all files and directories in the current directory
ls -l	List files and directories in long format
Is -t	Sort the files/folders according to the last modified time/date
cd	Change directory
cd ..	Move up one directory level
cd –	Change to the previous directory
dirs	Show current directory stack
pwd	Print current working directory
mkdir	Create a new directory
cp	Copy files and directories
mv	Move or rename files and directories
rm	Remove directories and files
find	Search for files and directories
touch	Create an empty file or update file timestamps
ln	Create links between files
cat	View the contents of a file
head	Display the first few lines of a file
tail	Display the last few lines of a file
cmp A B	Compare two files A and B for sameness
diff A B	Compare two files A and B for differences

Also Read: A Comprehensive Guide on How to Remove a Directory in Linux

Process Management Commands

In Linux, a process starts every time a program or application is executed. Use process management commands to control and monitor processes in progress.

Command	Description
top	Monitor system processes in real-time
pgrep	List processes based on their name
ps	Display active processes
kill	Terminate a process
pkill	Terminate processes based on their name
grep	Search for specific patterns or regular expressions in text files or streams and display matching lines
pmap	Display a memory usage map of processes
bg	List and resume stopped jobs in the background
fg	Bring the most recently suspended job to the foreground
jobs	Lists background processes

Also Read: Mastering the Grep Command in Linux: Tips and Tricks

File Permission Commands

File permissions control access to files and directories. Apply these commands to change and manage the file’s owner, group members, and user permissions.

Command	Description
umask	Set default file permissions
chmod	Change the permissions of a file
chown	Change the ownership of a file
chgrp	Change group ownership

Network Commands

Network commands are necessary for monitoring and troubleshooting network connections and configurations in Linux. Use them to diagnose issues, view network information, and manage connections.

Command	Description
netstat	Display network connections and statistics
ifconfig	Display IP addresses of all network interfaces
ss	Display network socket information
ping	Send ICMP echo requests to a host
ssh	Securely connect to a remote server
wget	Download files from the web
curl	Transfer data to or from a server
scp	Securely copy files between hosts

File Compression and Archiving Commands

File compression helps to reduce file size while an archive file enables storage of multiple files or directories in a compressed format. Use file compression and archiving commands to reduce file size and make them easier for storage and transfer.

Command	Description
tar	Create or extract archive files
zip	Create compressed zip archives
gzip	Compress files

System Management and Information Commands

System management and information commands gather information about a Linux system. Use the Linux commands cheat sheetto view information, restart the system, or change options.

Command	Description
whoami	Show current username
w	List logged-in users
uname	Print system information
hostname	View system hostname
hostname -I	Display IP address of host
free	Display memory usage information
lscpu	Display CPU information
uptime	Show system uptime
lsusb	List USB devices
lspci	List PCI devices
reboot	Restart the system
last reboot	List system reboot history
dmesg	Show bootup messages
cal	Display current calendar
date	Display current time and date
timedatectl	Query and change the system clock
shutdown	Shut down the system
shutdown now	Shut down the system immediately
shutdown [hh:mm]	Schedule a system shutdown

Disk Usage Commands

Disk usage provides information about filesystem usage and storage details. Apply these commands to monitor and manage disk space on your Linux machine.

Command	Description
df	Display disk space usage
du	Display file/folder sizes on disk
fdisk -l	Show disk partitions, sizes, and types
du -sh	Show disk usage of the current directory
du -ah	Show disk usage for all files and directories
mount	Show currently mounted file systems
findmnt	Display target mount point for all file systems
free -h	Display free and used memory in human readable units

Environment Variable Commands

Environment variables define various aspects related to the functioning of a Linux system, such as system information, configuration settings, etc. Use these commands to create, view, and remove variables.

Command	Description
echo $VARIABLE_NAME	Display the value of a variable
export VARIABLE_NAME=value	Set the value of an environment variable
env	Display all environment variables currently set in the system
unset VARIABLE_NAME	Remove an environment variable
env VAR1=value COMMAND	Set the value of an environment variable for a specific command
export -p	Shows a list of all currently exported environment variables
printenv	Displays the values of all environment variables

Conclusion

Linux is a powerful operating system that you can use for your development work. Knowing the basic Linux commands will enable you to get used to the system and strengthen your foundation. This Linux commands cheat sheet can help you in this task.

Are you ready to harness the power of a Linux server for your applications and websites? Vodien’s dedicated Linux servers offer lightning-fast performance and scalable resources. Contact our sales and support team today to learn how we can help you.