Background

In an earlier post spoke of the bane of installing the shutter application on a CentOS v8 system.

Lineage

1. Shutter:- Installation on Linux/CentOS ( v8 )
   Link

Workarounds

Snaps

One possible work around is to try our installation using Snaps.

What is Snaps?

Wikipedia

Link

Introduction

A guide to the Snaps workaround is availed here:-

Shutter
Alan Pope (popey)
Link

Outline

1. Repository
   • Register
     • Register epel-release
2. Package – Snap
   • Snap
     • Install
       • Snap ( snapd )
     • Configuration
       • Snap
         • Socke
           • Enable Snap Network Socket
           • Review Network Sockets
         • Support Classic
3. Package – Shutter
   • Shutter
     • Install
       • Shutter

Repository

Register

Register epel-release

Syntax

sudo yum install <repository>

Sample

sudo yum install epel-release

Package Snaps

install

Outline

Install snaps.

Syntax

sudo yum install <package>

Sample

sudo yum install snapd

configuration

Network Socket – Enable

Outline

Enable socket ( snapd.socket ).

Syntax

sudo systemctl enable <socket>

Sample

sudo systemctl enable --now snapd.socket

Network Socket – Inquire

Outline

Inquire Network socket ( snapd.socket ).

Syntax

sudo ss -l

Sample

sudo ss -l | grep -i snapd

Output – Text

>sudo ss -l | grep -i snapd
u_str LISTEN 0 128 /run/snapd.socket 26485 * 0 
u_str LISTEN 0 128 /run/snapd-snap.socket 26488 * 0 
u_str LISTEN 0 128 /run/user/1000/snapd-session-agent.socket 208520 * 0 
u_str LISTEN 0 128 /run/user/545260638/snapd-session-agent.socket 106483 * 0 
>

Output – Image

Explanation

1. snapd.socket
   • See that snapd.socket is listening on network port 128

Classic Snap Support

Outline

To support classic Snap, we will create a symbolic link.

Our source will be /var/lib/snapd/snap.

And, our destination will be /snap.

Syntax

sudo ln -s <source> <destination>

Sample

sudo ln -s /var/lib/snapd/snap /snap

Package – Shutter

install

Outline

We will harness snap to install shutter.

Syntax

sudo snap install <package>

Sample

sudo snap install shutter

Summary

Using Snaps helps a lot.

It allows developers and Dev-ops engineers to build self-contained applications.

As a fully self contained application, application runtime binaries can be packaged with the application themselves.

Dedication

Dedicating this post to Alan Pope.