First linux shell script

You should remember below things while writing the scripts.

  1. Every script should being with “#!/bin/bash”
  2. Comments can be added by prefixing the line with #

We are going to write a simple program in our first script. Write below lines of code in a file and name it as sample1.sh

#!/bin/bash

x=10

echo $x

Before you execute above command, ensure that you modify the permission of the file sample1.sh so that you can execute it.

chmod +x sample1.sh

To execute this program, just go to the shell prompt and type ./sample1.sh

This should generate below output.

10

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