How To Run a Previous Version of a Snap Package

Snap packages are a popular choice for software distribution in Linux environments. They offer many advantages, including isolation from the rest of the system, automatic updates, and the ability to run multiple versions of the same application. However, there may be times when you need to run a previous version of a snap package. This article will guide you through the process step-by-step.

What are Snap Packages?

Snap packages are a type of universal Linux package. They are self-contained software packages that include the binary and all dependencies needed to run the application. Snap packages are designed to work seamlessly across multiple Linux distributions, making software installation and management easier and more consistent.

Why Would You Need to Run a Previous Version?

There are several reasons why you might want to run a previous version of a snap package:

• Testing: You may need to test how your software behaves with a specific version of a dependency.
• Bug Regression: A new version of a package may introduce a bug that wasn’t present in a previous version.
• Compatibility: A newer version of a package may not be compatible with your system or other software you’re using.

Identifying the Version of a Snap Package

Before you can revert to a previous version, you need to identify the current and previous versions of the snap package. You can do this by using the snap list command followed by the package name and the --all flag. This command will display a list of all installed versions of the snap package along with their revision numbers.

Here’s the command:

$ snap list <package_name> --all

Replace <package_name> with the name of the snap package.

Reverting to a Previous Version

Once you’ve identified the revision number of the previous version you want to run, you can revert to it using the snap revert command. This command takes two parameters: the package name and the revision number.

Here’s the command:

$ sudo snap revert <package_name> --revision <revision_number>

Replace <package_name> with the name of the snap package and <revision_number> with the desired revision number.

Disabling Auto Updates

By default, snap packages are set to auto-update. If you want to temporarily run a previous version without auto-updates, you can disable the snap package using the --disable flag.

Here’s the command:

$ sudo snap disable <package_name>

Remember to enable the package again when you’re done testing:

$ sudo snap enable <package_name>

Checking Remote Versions

If you want to see the remote versions of a snap package, you can use the snap info command followed by the package name. This command will provide you with a URL where you can find the full publishing history of the package.

Here’s the command:

$ snap info <package_name>

Conclusion

Running a previous version of a snap package is a straightforward process once you understand the commands involved. Whether you’re testing, troubleshooting, or dealing with compatibility issues, this guide should help you navigate the process with ease. As always, remember to exercise caution when modifying system packages to avoid disrupting your system’s stability.