If you’re like most Linux users, you’re probably using the sudo command quite frequently. Whether you’re using it to install new software or simply to run a command as another user, it’s a handy tool to have in your arsenal.
But what if you could automate the sudo command? That would be even handier, right?
Well, it turns out that you can. In this article, we’ll show you how to use the sudo command in a shell script.
Before we get started, let’s briefly review what the sudo command does.
The sudo command allows a user to execute a command as another user. By default, the sudo command will allow a user to run a command as the root user. However, the sudo command can be configured to allow a user to run a command as any other user.
The sudo command is typically used when a user needs to perform a task that requires elevated privileges. For example, a user might need to install a new piece of software or modify a system configuration file.
Now that we’ve reviewed the basics of the sudo command, let’s see how we can use it in a shell script.
The first thing we need to do is create a shell script that will use the sudo command. We’ll call our shell script sudo_script.sh.
echo “Running sudo script…”
sudo apt-get update
sudo apt-get install -y apache2
echo “Script complete.”
As you can see, our shell script is pretty simple. We start by printing a message to the screen. Then, we use the sudo command to run the apt-get update and apt-get install -y apache2 commands. Finally, we print another message to the screen.
Now that we have our shell script, let’s make it executable.
sudo chmod +x sudo_script.sh
Now, we can run our shell script like any other executable.
When we run our shell script, we should see the following output:
Running sudo script…
[sudo] password for user:
Reading package lists… Done
Building dependency tree
Reading state information… Done
apache2 is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 325 not upgraded.
As you can see, when we ran our shell script, it prompted us for our password. This is because the sudo command requires us to enter our password in order to execute the apt-get update and apt-get install -y apache2 commands.
If we didn’t want to be prompted for our password, we could use the -S option.
sudo -S apt-get update
Other related questions:
Can you run sudo in a shell script?
Yes, you can run sudo in a shell script.
How do you automate sudo su?
There is no need to automate sudo su.
How do I run a sudo command in shell?
You can use the sudo command to run a sudo command in shell. For example, if you want to run the sudo command to update your system, you can run the following command:
sudo apt-get update
How do I give a sudo permission to a script?
You can give a sudo permission to a script by adding the following line to the script:
sudo chmod +x /path/to/script.sh