Basic Data

  • Linux kernel version: uname -r
  • Ubuntu version: lsb_release -a

Working with Files

  • Less: view file one page at a time
    • Open file and view first page: less [filePath]
    • Navigate by page: Keybrd[PageUp] | Keybrd[PageDwn]
    • Exit less: Keybrd[q]
  • Vim: view and edit files
    • enter mode select visually by character: v
    • enter mode select visually by line: V
    • copy selection: y
    • paste at cursor: p

Users

  • list all users: less /etc/passwd
  • switch to different user: su [usernameToSwitchTo]
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