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Asked: 2024-09-25T20:10:11+05:30 In:

What is the method to display a list of snaps along with their confinement types on Ubuntu?

I’ve been diving into Ubuntu lately, and I’m really intrigued by how snaps work. There’s so much to explore, but one thing that’s been bugging me is the different confinement types of snaps and how to actually view them. I know some snaps are more restricted than others, but I can never keep them straight.

I want to see a list of all the installed snaps on my system along with their respective confinement types. I’ve come across a couple of terminal commands, but I’m not sure if they’re the best or most efficient way to do this. I tried something basic like `snap list`, which gives a list of installed snaps, but it doesn’t show me the confinement types. I want the full picture, you know?

I remember reading somewhere that snaps can have different confinement levels like strict, classic, or devmode, but I can’t recall the details. It would be super helpful to see everything in one command output. Does anyone have a trick up their sleeve for displaying this info?

I’ve been experimenting with some terminal commands, but I’m not really that experienced, and I sometimes feel overwhelmed with the options available. I really don’t want the solution to require complex scripts or anything; just a straightforward command would be amazing!

I’d love to hear what you all do to find this information. Is there a specific command you use that combines everything neatly? Or maybe a way to parse the output to get what I need? Any tips or tricks would really help me out, and I’m sure other newbies to snap management would appreciate the insight too! Thanks in advance, and I really look forward to hearing your suggestions!

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    2 Answers






    1. Understanding Snap Confinement Types

      Checking Snap Confinement Types

      To see a list of all your installed snaps along with their confinement types, you can use the following command:

      snap list --all

      This command lists all the installed snaps, but still doesn’t show the confinement types directly. To get the confinement type for each snap, you can run a command like this:

      snap info <snap-name>

      Replace <snap-name> with the name of the snap you’re interested in. It’ll show you the confinement type under confinement.

      Unfortunately, there’s no built-in command that combines both the list and confinement types into one output directly. But, here’s a little trick you can do:

      • Use snap list to get the names of the snaps.
      • Then, for each snap, run snap info.

      If you’re looking for a super simple way just to see the confinement types, there’s a command combo you could try:

      for snap in $(snap list | awk '{print $1}' | tail -n +2); do echo -n "$snap: "; snap info $snap | grep "confinement"; done

      This will give you a list of each snap and its confinement type in one go! Just copy and paste it into your terminal. Pretty neat, right?

      As for the different types of confinement:

      • Strict: Most common; snaps cannot access the host system without explicit permission.
      • Classic: More like traditional packages; they have broader access but must be installed with care.
      • Devmode: Used mainly for development; snaps can access almost everything (dangerous for production).

      Don’t worry if it feels a bit overwhelming at first! Just keep experimenting, and you’ll get the hang of snap management in no time!



    2. To view a list of all installed snaps along with their respective confinement types, you can use the terminal command `snap list –all`. However, this command alone doesn’t display the confinement types. A straightforward way to achieve your goal is to utilize the `snap info ` command for each installed snap. This command provides detailed information about the snap, including its confinement type (strict, classic, or devmode). While this may seem cumbersome if you have many snaps installed, you can easily combine these commands into a single command line using a shell for loop. For example, you can use `for snap in $(snap list | awk ‘{print $1}’ | tail -n +2); do echo “$snap: $(snap info $snap | grep ‘confinement’)”; done` to get a concise output of each snap and its confinement type.

      To elaborate on the different confinement types, snaps can be categorized as follows: strict confinement restricts access to system resources and files, requiring the snap to declare its interfaces explicitly; classic confinement allows snaps to access the system in a similar way to traditional applications, being less isolated; and devmode is similar to strict but permits a broader access, meant for development and testing purposes. Understanding these types helps in managing your snaps effectively and maintaining the security and stability of your Ubuntu system. The above command provides a succinct way to get the information you seek without delving into complex scripts, making it a practical option for users who are newer to snap management.


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