Linux Commands

Core shell and system administration commands.

Files

ls

Lists directory contents.

cd

Changes the current working directory.

find

Searches a directory tree for files matching given criteria.

Text

grep

Searches text for lines matching a pattern.

Permissions

chmod

Changes a file or directory's permission bits.

chown

Changes the owning user and/or group of a file.

Processes

ps

Reports a snapshot of currently running processes.

kill

Sends a signal (by default SIGTERM) to a process, typically to stop it.

top

Shows a live, continuously-updating view of running processes and system resource usage.

System

df

Reports disk space usage for mounted filesystems.

Networking

ssh

Opens a secure shell session on a remote host.