Collection of simple bash script that will written for new Learners

$ git clone https://github.com/hosam1696/simple-bash-scripts

To Open the repo on Your Browser

$ npm repo

To list the available shells on your machine

> cat /etc/shells

# List of acceptable shells for chpass(1).
# Ftpd will not allow users to connect who are not using
# one of these shells.

/bin/bash
/bin/csh
/bin/dash
/bin/ksh
/bin/sh
/bin/tcsh
/bin/zsh

= compare if two strings are equal

!= compare if two strings are not equal

-n evaluate if string length is greater than zero

-z evaluate if string length is equal to zero

Examples:

[ s1 = s2 ] (true if s1 same as s2, else false)

[ s1 != s2 ] (true if s1 not same as s2, else false)

[ s1 ] (true if s1 is not empty, else false)

[ -n s1 ] (true if s1 has a length greater then 0, else false)

[ -z s2 ] (true if s2 has a length of 0, otherwise false)

-eq compare if two numbers are equal

-ge compare if one number is greater than or equal to a number

-le compare if one number is less than or equal to a number

-ne compare if two numbers are not equal

-gt compare if one number is greater than another number

-lt compare if one number is less than another number

Examples:

[ n1 -eq n2 ] (true if n1 same as n2, else false)

[ n1 -ge n2 ] (true if n1greater then or equal to n2, else false)

[ n1 -le n2 ] (true if n1 less then or equal to n2, else false)

[ n1 -ne n2 ] (true if n1 is not same as n2, else false)

[ n1 -gt n2 ] (true if n1 greater then n2, else false)

[ n1 -lt n2 ] (true if n1 less then n2, else false)