Linux Tactic

Mastering RPM Extraction on Ubuntu with rpm2cpio

Installing Required Packages on Ubuntu 20.04

Ubuntu 20.04 is one of the most popular Linux distributions out there today. It’s known for its stability, security, and ease of use.

However, if you’re new to Ubuntu, figuring out how to install required packages can be a daunting challenge. Fortunately, you’re in the right place.

In this article, we’ll walk you through the process of updating your Ubuntu system and installing the rpm2cpio package.

Updating the Linux System

First things first, it’s essential to ensure that your Ubuntu system is up to date. Updating your system is vital to ensure that you’re installing the latest security patches and bug fixes.

To update your Ubuntu system, you can follow these simple steps:

1. Open your terminal by pressing Ctrl + Alt + T.

2. Type the following command to update your package list:

“`

sudo apt-get update

“`

3. Type the following command to upgrade your existing packages:

“`

sudo apt-get upgrade

“`

4. Once you’ve entered the command, the system will prompt you to confirm the upgrade by typing ‘y’ and hitting enter.

That’s all there is to it! Your system is now fully updated and ready to install the required packages.

Installing rpm2cpio

rpm2cpio is a tool that converts RPM packages into the cpio archive format. The cpio format is used to transfer files between systems and is widely used in Linux distributions.

Installing rpm2cpio on Ubuntu 20.04 is a simple process. Here’s how:

1.

Open your terminal by pressing Ctrl + Alt + T. 2.

Type the following command to install rpm2cpio:

“`

sudo apt-get install rpm2cpio

“`

3. If prompted, enter your user password and hit enter to confirm the installation process.

That’s it! You’re all set with the rpm2cpio package. You can now use it to convert RPM files to cpio files.

Installing Alien Package

The Alien package is a tool that allows you to convert RPM files into Debian packages, making it easier to install software on Ubuntu. Here’s how to install the Alien package on Ubuntu 20.04.

Adding “Universe” Repository

By default, Ubuntu doesn’t include the Universe software repository, which contains the Alien package you need. Here’s how to add it:

1.

Open your terminal by pressing Ctrl + Alt + T. 2.

Type the following command to update your package list:

“`

sudo apt-get update

“`

3. Type the following command to enable the Universe repository:

“`

sudo add-apt-repository universe

“`

4. If prompted, enter your user password and hit the enter key to confirm the command.

With the Universe repository enabled, you can now install the Alien package.

Installing Alien Package

With the Universe repository enabled, you can now install the Alien package. Here’s how:

1.

Open your terminal by pressing Ctrl + Alt + T. 2.

Type the following command to update your package list:

“`

sudo apt-get update

“`

3. Type the following command to install the Alien package:

“`

sudo apt-get install alien

“`

4. If prompted, enter your user password and hit enter to confirm the installation process.

That’s all! You now have the Alien package installed on your Ubuntu system.

Conclusion

In this article, we’ve walked you through the process of installing required packages on Ubuntu 20.04. Updating your system and installing the rpm2cpio package is essential for transferring files between systems, and the Alien package is useful for installing software on Ubuntu.

With these packages installed, you’ll be able to take full advantage of Ubuntu’s features and capabilities, allowing you to use your system more effectively and efficiently.

Extracting RPM File using rpm2cpio

If you’re working with Linux, you may come across the need to extract an RPM (Red Hat Package Manager) file on Ubuntu to extract its contents. One common reason for this is when you have an RPM file, but your Linux system doesn’t support RPM.

This is where rpm2cpio comes in handy. In this article, we’ll cover in detail how to extract an RPM file using rpm2cpio and the correct method to extract it.

Converting .rpm to .cpio archive

Before we can extract an RPM file using rpm2cpio, we need to convert it to a cpio archive. The cpio archive format is a file archiving format that is used to store files for distribution or backup purposes.

Converting an RPM file to a cpio archive using rpm2cpio is a simple process, and here’s how to do it:

1. Open your terminal by pressing Ctrl + Alt + T.

2. Type the following command to install rpm2cpio if it isn’t installed already:

“`

sudo apt-get install rpm2cpio

“`

3. Type the following command to convert the RPM file to a cpio archive:

“`

rpm2cpio [filename.rpm] > [filename.cpio]

“`

In the above command, replace [filename.rpm] with the name of your RPM file, and [filename.cpio] with the name you want to give your cpio archive.

With the RPM file successfully converted to a cpio archive, we can now proceed with extracting its contents.

Correct Method to Extract

Once we have converted the RPM file to a cpio archive, we can extract its contents. However, it’s essential to use the correct method to extract it.

The correct method is to use the cpio command in idmv mode. The idmv mode stands for “input, file, make directory, verbose.” Heres the correct method to extract the RPM file:

1.

Open your terminal by pressing Ctrl + Alt + T. 2.

Type the following command to extract the contents of the RPM file:

“`

cpio -idmv < [filename.cpio]

“`

In the above command, replace [filename.cpio] with the name of your cpio archive file. The cpio command will now extract the contents from your cpio archive and create a directory with the name of the RPM package in the current directory.

The directory will contain all the files and directories that were packaged in the RPM file. It’s essential to use the cpio command with the idmv mode to ensure that the directory structure and file permissions are preserved while extracting the RPM file.

Final Words

While Linux systems typically use package managers, sometimes packages may come in the RPM package format. By converting the RPM package into a cpio archive and then using the cpio command in idmv mode, you can quickly extract its contents and manage them in whichever way you see fit.

Following this method to extract RPM files with rpm2cpio ensures that the files and directory structure are preserved, reducing the chance of any compatibility or other issues. Extracting an RPM file on Ubuntu may be necessary if your system does not support RPM packages.

Thankfully, the rpm2cpio tool converts RPM to cpio archives which can be extracted using the cpio command in idmv mode. This method preserves the directory structure and permissions of the files and can reduce the likelihood of compatibility issues.

Additionally, it allows for more efficient file management. It’s important to follow the correct steps when extracting RPM files, and this article has provided a clear guide to doing so.

Concluding, knowing how to extract an RPM file using rpm2cpio can be useful for any Linux system, making it a worthwhile skill to learn.

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