Ubuntu Unleashed 2019 Edition: Covering 18.04, 18.10, 19.04

Working as  Root

Understanding   and Fixing  sudo

Creating    Users

Deleting    Users

Shutting    Down    the System

Rebooting   the System

Commonly    Used    Commands    and Programs

References

11 Command-Line Master Class, Part

Why Use the Command Line?

Using   Basic   Commands

Printing    the Contents    of  a   File    with    cat

Changing    Directories with    cd

Changing    File    Access  Permissions with    chmod

Copying Files   with    cp

Printing    Disk    Usage   with    du

Using   echo

Finding Files   by  Searching   with    find

Searches    for a   String  in  Input   with    grep

Paging  Through Output  with    less

Creating    Links   Between Files   with    ln

Finding Files   from    an  Index   with    locate

Listing Files   in  the Current Directory   with    ls

Listing System  Information with    lsblk,  lshw,   lsmod,  lspci,

and neofetch

Reading Manual  Pages   with    man

Making  Directories with    mkdir

Moving  Files   with    mv