How to install & run Gimp using snap

debugcn Published at Dev

jastako

I want to:

Ask if user has installed snap. If not run a script that installs snap & exit, if yes continue.
Install gimp, then show a message indicating that gimp install is complete.
Ask user if they want to run gimp. If yes run gimp, if no exit script.

Shane Bishop

Here is an sh-compliant script. Comments are provided to explain what different parts of the script do.

I assumed it was okay to install snap with the apt package manager, because the OP did not specify how to install snap.

#!/usr/bin/env sh

# Exit early if any command fails
set -e

installSnap() {
    # Assumption: This script is run only on Debian-based Linux distributions
    echo 'snap not installed, installing snap...'
    sudo apt update
    sudo apt install snapd
    echo 'snap installed. Log out and back in again before using snap.'
}

# If snap is not installed, install snap and exit
command -v snap || { installSnap && echo 'Exiting install script.' && exit 0; }

# Install GIMP
echo 'Installing GIMP...'
snap install gimp
echo 'GIMP installed.'

# Prompt user for input, and store input in answer
printf 'Would you like to run GIMP (y/n)? '
read -r answer

# If answer begins with 'Y' or 'y', start gimp
# Run gimp in background with nohup so gimp will continue running after
# this script terminates
# We likely aren't interested in gimp's output, so redirect it to /dev/null
[ "$answer" != "${answer#[Yy]}" ] && nohup gimp > /dev/null 2>&1 &

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