1. Basic Command
    1. cd
    2. ll
    3. ls
    4. rmdir/mkdir
    5. rm
  2. Network Command
    1. ssh
      1. X
    2. traceroute
    3. scp
    4. ifconfic
    5. netstat
    6. rsync
    7. who
  3. process related
    1. ps
      1. aux
    2. kill
      1. all
      2. ag
    3. fg PID
  4. Data & file manipulation
    1. awk
    2. grep
    3. ll
    4. ls
    5. find
    6. touch
    7. cat
    8. tar
    9. zip
  5. Diagnostic related
    1. lspci -v
    2. Subtopic 2
  6. System related
    1. df -H
    2. watch
  7. GUI
    1. zenity
    2. dialog
    3. notify-send