Complete Course on Linux Bash Shell Scripting with Real-Life Examples [Video]

show avaible shells

cat /etc/shells

lists long file in reverse order

-l == list long version

-t = sort by most used to least

-r = reverse

ls -ltr

Script Naming Convention

• Scripts directory
• Script name should id function
• Script should end with .shell (if multiple shells are used.)

Script File Permissions

• All script to be executed should have proper executable file permissions

• to change permissions

  chmod a+x scriptname

Script Format

• Define shell (#!/bin/bash)

• Comments (# comments)

• Define Variables (ex: name=Iran)

• Commands (echo, cp , grep)

• Statements (if, while, for )