Let’s get to know the Linux Command Line Interface (CLI). Introduction A bit of history First look at the command line Command syntax Notes Basic commands pwd ls file cat cd clear history cp mv rm ...

The basic syntax for an if command is “if value == other_value”. The == performs a comparison, and it’s necessary to ensure that the shell sees one value on each side of the comparison operator.

Case The I2A2 reflector DBM ignores case in alphabetic characters when it matches a regular expression to the names it knows. Formal Regular Expression Rules These are the formal rules for forming ...