Linux Commands Cheat Sheet

Burr Sutter and Bob Reselman
September 6, 2022
Linux
LInux Commands cheat sheet cover 2022


About


The Linux operating system offers a multitude of commands, which can be
overwhelming for beginners.  This cheat sheet helps you get familiar with
over 30 basic Linux command-line executables frequently used by developers.
You’ll find easy-to-learn shortcuts and code examples to help you find
your way around the Linux command line.

With the Linux Commands Cheat Sheet, you’ll learn basic commands for:

Use man xxx for info on each command below.



Application and process management:
which
yum




Console and output management, 
working with data sent to stdout, stderr
cat
clear
echo
top



Creating and exporting environment variables:
env
export
printenv
source



Working with files and directories:
 
cd
cp
find
grep
ls
mkdir
more
mv
pwd
rm
tar



Accessing command-line help documentation:
man



Working with networks on and from a Linux computer:
curl
ip
netstat
ssh
wget



Process management:
 
&&
kill
ps



System control:
poweroff
restart



User management:
whoami

With Red Hat Developer cheat sheets, you get essential information right at your
fingertips so you can work faster and smarter. Easily learn new technologies and
coding concepts and quickly find the answers you need.


Excerpt


find
sudo find <starting/directory> -name <file/directory name>

Finds a file or directory by name.

Example:

The following command finds a file named hostname starting from the root ( /) 
directory of the computer’s filesystem. Note that the command starts with sudo 
in order to access files restricted to the root user:
$ sudo find / -name hostname

/proc/sys/kernel/hostname

/etc/hostname

/var/lib/selinux/targeted/active/modules/100/hostname

/usr/bin/hostname

/usr/lib64/gettext/hostname

/usr/share/licenses/hostname

/usr/share/doc/hostname

/usr/share/bash-completion/completions/hostname

/usr/share/selinux/targeted/default/active/modules/100/hostname

/usr/libexec/hostname


grep

grep  

$ less -N ~/.bashrc



Who's Locking a File

lsof   /media/paul/zyz