Shell Scripting for beginners Part1 covered the execution of a Shell Script on WINDOWS platform with a comprehensive illustration. In this article let us practice shell scripting on LINUX platform. This is done using GNOME-shell for scripting and vim editor for modification and saving of shell scripts.
Open the terminal: Go to Applications → Accessories → Terminal
Pre-requisite: Installation of GNOME-shell
COMMAND:
sudo apt-get install gnome-shell |
OUTPUT: It takes a few seconds
[sudo] password for dell:
Reading package lists… Done
Building dependency tree…………..
After this install the vim editor using the command
sudo apt-get install vim |
Creation and execution of a simple Shell Script
Let us start by creating a directory called shellscripts using mkdir command and start working there
Navigate to home directory using cd ~ command
cd ~ mkdir shellscripts cd shellscripts |
Now we are inside the shellscripts directory. Now create a new shell script called test.sh using the command:
vim test.sh |
After giving vim command it creates a new file called test.sh. Press “INSERT” key to start scripting. The shell script starts with a “shabang”. In this program we display the username using $USER variable and echo command as below:
#!/bin/sh clear echo "Hello, $USER." |
The screen should look as below:
Now save the file using ESC+w+q+! command
Grant permissions for execution of test.sh using the chmod command as below:
chmod +x test.sh |
Execute the shell script using:
./test.sh |
The output is as below:
