Linux Cheat Sheet

Essential Linux commands for daily use. File management, networking, and system admin. Bookmark this page or print it.

File Operations

ls -laList files

cp -r src dstCopy dir

mv src dstMove/rename

rm -rf dirRemove dir

mkdir -p dirCreate dirs

find . -name "*.txt"Find files

chmod 755 filePermissions

chown user:group fileOwnership

grep "pattern" fileSearch text

grep -r "pattern" dirRecursive search

sed "s/old/new/g" fileFind & replace

awk "{print $1}" fileColumn extract

wc -l fileCount lines

head -n 20 fileFirst 20 lines

tail -f fileFollow changes

sort | uniq -cSort & count

top / htopProcess monitor

ps auxList processes

kill -9 PIDKill process

df -hDisk usage

du -sh dirDir size

free -hMemory usage

uname -aSystem info

uptimeSystem uptime

curl -O urlDownload

wget urlDownload

ssh user@hostRemote login

scp file user@host:pathCopy remote

netstat -tulpnOpen ports

ping hostTest connectivity

dig domainDNS lookup

ifconfig / ip addrNetwork info