How To Install lpunlock on CentOS 8

One-liner Install Command

If you are only interested in the installation command, here is a quick answer for you:

sudo yum makecache && sudo yum -y install expect

sudo dnf makecache && sudo dnf -y install expect

But if you are interested in the details with step-by-step instructions, the following information will be helpful.

What is lpunlock and How to Install It?

First things first, you will need access to a server or computer running CentOS 8. This guide was written specifically with a server running CentOS 8 in mind, although it should also work on older, supported versions of the operating system.

Also, make sure you are running a regular, non-root user with sudo privileges configured on your server. When you have an account available, log in as your non-root user to begin.

There are several ways to install lpunlock on CentOS 8. You can use (links are clickable):

In the following sections, we will describe each method in detail. You can choose one of them or refer to the recommended one.

Install lpunlock on CentOS 8 using dnf

First, update dnf packages database with dnf by running the next command:

sudo dnf makecache --refresh

After updating database, You can install lpunlock using dnf by running the following command:

sudo dnf -y install expect

Install lpunlock on CentOS 8 using yum

Because lpunlock is available in CentOS 8’s default repositories, it is possible to install it from these repositories using the yum packaging system.

To begin, update local packages database with yum using the following command.

sudo yum makecache --refresh

Now can install lpunlock package on your server/computer by running the following command:

sudo yum -y install expect

How to upgrade (update) a single package lpunlock using yum?

To update all the packages available on the system:

yum update

If you want to update a specific package like lpunlock in this example you should use the following command:

yum update expect

To downgrade a package to an earlier version:

yum downgrade expect

How to Upgrade lpunlock on CentOS 8 with dnf?

When you run the dnf update, all system packages with available updates are updated. However, if you want to upgrade a single package, then you would have to pass the package name as the argument to the dnf update command.

dnf update expect

How To remove lpunlock from CentOS 8

To uninstall only the lpunlock package you can execute the following command:

sudo dnf remove expect

Extra info and code examples

Expect is a tool for automating interactive applications according to a script. Following the script, Expect knows what can be expected from a program and what the correct response should be. Expect is also useful for testing these same applications. And by adding Tk, you can also wrap interactive applications in X11 GUIs. An interpreted language provides branching and high-level control structures to direct the dialogue. In addition, the user can take control and interact directly when desired, afterward returning control to the script. This package contains the expect binary and several Expect based scripts.

Conclusion

You now have a full guide on how to install lpunlock using dnf and yum package managers. Also, we showed how to update manually as a single package and different ways to uninstall the lpunlock from CentOS 8.

See also: