Linux commands

Below is a list of useful Linux commands

There are several ways in which directories in the current path can be displayed:

Using ls with -l to print directories: $ ls -l */
Using ls -F with grep : $ ls -F | grep "/$"
Using ls -l with grep : $ ls -l | grep "^d" 

Make a hidden directory

mkdir .dirname - add a period in front of the name

List hidden directories

ls -a

Show directory size:

du -sk to show the size in kilobytes

du -sh to show the size in more human-friendly format

How to change console backround and text color in Linux

Type in the following command to change the background to white and text to black:

setterm -background white -foreground black -store