How to use If condition in bash or shell script with examples.

This is a simple bash script or shell script to find greatest of two numbers.

read function used to get input from the user

-gt = Greater than

Note: if you get this message, this means you need to add an execute (x) permission to the bin/greatestOfTwo file.

bash: ./greatestOfTwo.sh: Permission denied

Run the following command

$ chmod +x greatestOfTwo.sh 

Now let's execute

$ ./greatestOfTwo.sh 
Enter First Number: 23
Enter Second Number: 34

Output

Greatest is 34

I hope this may help you.