Install apps and packages using snap

Problem:

You need install or remove applications or packages using snap.

Solution:

You can use the Terminal and the snap command.

Step by step:

List the snap packages installed:
```
 snap list
```
or using:
```
 snap list --all
```
Additionally you can view all the disk blocks using by the apps or packages:
```
 lsblk
```
Install a package:
```
sudo snap install <packagename>
```
Remove a package:

Remove the package but the space in hard disk will not be erased.
```
 sudo snap remove <packagename>
```
If additionally you wanto to remove the cache:
```
 sudo snap remove --purge <packagename>
```
Warning! ⚠️, take care!. In this case, you completely remove a snap package, including all of its revision loop drives. Only by doing so, will the hard drive space be made available again.

Remove a package, just an specific revision (version)

First get a full list, showing all the revisions:

 snap list --all

Expected output:

 Name                         Version                          Rev    Tracking         Publisher        Notes
 bare                         1.0                              5      latest/stable    canonical✓       base
 chromium                     141.0.7390.54                    3265   latest/stable    canonical✓       -
 chromium-ffmpeg              120726-120170-119605-119293-etc  88     latest/stable    canonical✓       -
 firefox                      144.0.2-1                        7177   latest/stable    mozilla✓         -
 firefox                      140.4.0esr-2                     7084   latest/stable    mozilla✓         disabled
 .
 .
 .
 opera                        123.0.5669.23                    404    latest/stable    opera-software✓  -
 photogimp                    2.10.20                          141    latest/stable    pedro.ermarinho  -

You can remove the apps that appears disabled (not base,disabled)

 sudo snap remove <packagename> --revision=<revision-number>

For example, firefox appears disabled, you can remove it:

 sudo snap remove firefox --revision=7084

Source:

https://askubuntu.com/a/1431864/822132
https://snapcraft.io/docs
https://snapcraft.io/docs/get-started
https://snapcraft.io/docs/installing-snap-on-ubuntu