Bash Cheat Sheet

Bash

COMMAND DESCRIPTION

|pwd|Print current working directory.
|ls|List directory contents.
|cd dir|Change directory.
|mkdir dir|Create a directory.
|touch file|Create an empty file.
|cp src dst|Copy files or directories.
|mv src dst|Move or rename files.
|rm file|Remove files.
|stat file|Show file metadata.
|cat file|Print file contents.
|less file|View file interactively.
|head file|Show first lines.
|tail file|Show last lines.
|grep pattern file|Search text.
|rg pattern|Fast recursive search.
|sed 's/a/b/'|Edit text streams.
|awk '{print $1}'|Column-based processing.
|sort|Sort lines.
|uniq|Filter duplicate lines.
|wc|Count lines, words, bytes.
|cut -d: -f1|Extract columns.
|tr a b|Translate characters.
|paste a b|Merge lines.
|column -t|Align output in columns.
|pr file|Pretty-print text.
|find .|Search for files.
|chmod +x file|Change permissions.
|chown user file|Change ownership.
|sudo cmd|Run as root.
|ps aux|List processes.
|top|Process monitor.
|htop|Enhanced process viewer.
|kill PID|Terminate process.
|ss|Inspect sockets.
|df|Filesystem usage.
|du|Directory sizes.
|lsblk|Block devices.
|mount|Mount filesystem.
|umount|Unmount filesystem.
|tar -cf a.tar dir|Create tar archive.
|tar -xf a.tar|Extract tar archive.
|zip -r a.zip dir|Create zip archive.
|unzip a.zip|Extract zip archive.
|curl URL|Fetch URL.
|wget URL|Download file.
|rsync src dst|Sync files.
|ssh user@host|Remote login.
|scp file host:/path|Copy over SSH.
|journalctl|Logs from systemd journal.
|dmesg|Diagnostic messages from kernel.
|nmcli device status|Network devices.
|bluetoothctl|Bluetooth manager.
|systemctl status svc|Service status.
|systemctl start svc|Start service.
|systemctl stop svc|Stop service.
|apt install pkg|Install package.
|man cmd|View manual.
|apropos keyword|Search man pages.
|uname -a|Kernel info.
|uptime|System run time.
|hostnamectl|Hostname config.
|lshw|Hardware info.
|modprobe module|Load kernel module.
|env|Environment variables.
|export VAR=value|Set variable.
|set -o pipefail|Propagate error from any pipeline.
|bash script.sh|Run script with Bash.
|./script.sh|Run executable.