Text-based control.
WHY IT MATTERS IN IT WORK
Many tasks are only possible, or far faster, from the command line.
And server administration is frequently command-line only.
WHAT TO LEARN FIRST
Where you are Listing contents Changing location Viewing a file Copying, moving and removing Finding files
WHAT ELSE IS ESSENTIAL
Viewing running processes Checking network configuration Testing connectivity Reading logs
WHAT SCRIPTING PROVIDES
Repeating a sequence reliably, and automating routine work.
WHAT TO BE CAREFUL WITH
Commands that delete Commands run with elevated privilege Wildcards, which match more than intended Commands copied from the internet
WHY THAT LAST ONE
A command you do not understand may do something irreversible.
WHAT DOES NOT EXIST
An undo.
WHAT TO DO BEFORE RUNNING SOMETHING UNFAMILIAR
Understand every part of it.
WHAT TO PRACTISE ON
A test system.
WHAT TO KEEP
A record of commands you use, with what each does.
