We explore the system a bit and see what common commands you might want to use.

Commands we cover:

• pwd print working directory (the current directory you are in)
• cd move working directory
  • cd ~ or cd - Move to current user home directory
  • cd - Go to the previous directory you were in
• history - search command history
  • history | grep TERM - Search for a specific command run
  • !48 - History returns a numbered list. Use ! <command number> to re-run that command
• lsb_release -a - Find system information on Debian/Ubuntu
• uname -r, uname -i - Get linux information (linux kernel version, 32 vs 64 bit, etc)
• ps aux - List all runningprocesses and information about them
  • ps aux | grep TERM - Search for a process by a search term (e.g. php, nginx)
• top - See currently running processes and resource usage
  • htop - A much nicer view of the top command, includers filters and other tools
• df -h - See disk usage information
• free -m - See RAM and Swap usage

Original video