Linux Cheat Sheet by Sky11

ls	List files and direct­ories.
cd	Change the current directory.
pwd	Print the working directory.
touch	Create an empty file.
mkdir	Create a new directory.
rm	Remove files or direct­ories.
cp	Copy files or direct­ories.
mv	Move or rename files or direct­ories.

apt / apt-get	Package management for Debian­-based systems.
yum	Package management for Red Hat-based systems.
dnf	Package management for Fedora and CentOS.
zypper	Package management for openSUSE.

tar	Archive files.
gzip / gunzip	Compress or decompress files.
zip / unzip	Create or extract zip archives.
bzip2 / bunzip2	Compress or decompress files with bzip2.
xz / unxz	Compress or decompress files with xz.

ps	Display currently running processes.
kill	Terminate processes.
top	Monitor system processes in real-time.
ps aux	Show detailed process inform­ation.
killall	Terminate processes by name.

chmod	Change file permis­sions.
chown	Change file owner and group.
umask	Set default file permis­sions for new files.
chgrp	Change group ownership of a file or directory.
lsattr	List file attrib­utes.

date	Display or set the system date and time.
history	View command history.
man	Display the manual pages for commands.
cal	Display a calendar.
who	Show who is logged on.
uptime	Show system uptime.
watch	Execute a command repeatedly and display results.

cat	Concat­enate and display file contents.
more / less	View file contents one page at a time.
nano / vim / emacs	Text editors for file editing.
head	Display the beginning of a file.
tail	Display the end of a file.
wc	Count lines, words, and characters in a file.
sed	Stream editor for text manipu­lation.

ping	Check network connec­tivity to a host.
ifconfig / ip	Network interface config­ura­tion.
ssh	Securely connect to a remote machine.
scp	Securely copy files between machines.
netstat	Network statistics and active connec­tions.
nslookup	Query DNS servers for DNS-re­lated inform­ation.
curl	Transfer data from or to a server.
wget	Download files from the web.

uname	Display system inform­ation.
df	Disk space usage.
free	Display memory usage.
uptime	Show system uptime.
lsb_re­lease	Display Linux Standard Base (LSB) inform­ation.
lscpu	Display CPU inform­ation.
lshw	List hardware inform­ation.
lsblk	List block devices.

grep	Search for text in files.
sed	Stream editor for text manipu­lation.
awk	Text processing and pattern matching.
cut	Remove sections from each line of a file.
sort	Sort lines of text files.
tr	Translate characters in a file.
comm	Compare two sorted files line by line.

useradd / adduser	Create a new user.
passwd	Change user password.
usermod	Modify user account settings.
userdel	Delete a user account.
id	Display user and group inform­ation.
groups	Show group membership for a user.