Shell Scripts: How to execute them

A .sh file is a scripting language file that contains commands that can be executed on a Unix shell. These are a series of commands run from the command line interface by the user or in bash mode to run multiple commands simultaneously. To print the content of the file on the screen, we will use the cat command -

$ cat file.sh
echo "Hello World!";
echo "I am UniDatacenter";

To run this shell script, there are multiple way and you can choose to run using any one of them.

SH Command

Here is the command for execute the commands using the shell script file.

$ sh file.sh

Hello World!
I am UniDatacenter

Bash Command

Here is the command for executing the command using the shell script file.

$ bash file.sh

Hello World!
I am UniDatacenter

Directe execution (./file.sh)

Firstly you have to make the shell script file executable using chmod command.

$ chmod u+x file.sh

Now, our file is executable and we can execute the file directly using -

$ ./file.sh

Hello World!
I am UniDatacenter

You have learned how to execute a file using the sh, and bash commands or by making any file executable using chmod.

Check out UniDatacenter Blogs (https://www.uni-datacenter.com/blog) for more such insightful blog posts. If you are facing any issues please contact admin-help@uni-datacenter.com .