SNAP PACKAGES CHECKER - Includes all downloaded, installed and old (on disk but unistalled) ones. Inlcudes file size (space on disk used) and their location on your system.

snap_pkgs_overview.sh

#!/bin/bash

cat <<\EOF
.-./`)         .---.  .---.    ____   ,---------.    .-''-.             .-'''-. ,---.   .--.   ____    .-------.  
\ .-.')        |   |  |_ _|  .'  __ `.\          \ .'_ _   \           / _     \|    \  |  | .'  __ `. \  _(`)_ \ 
/ `-' \        |   |  ( ' ) /   '  \  \`--.  ,---'/ ( ` )   '         (`' )/`--'|  ,  \ |  |/   '  \  \| (_ o._)| 
 `-'`"`        |   '-(_{;}_)|___|  /  |   |   \  . (_ o _)  |        (_ o _).   |  |\_ \|  ||___|  /  ||  (_,_) / 
 .---.         |      (_,_)    _.-`   |   :_ _:  |  (_,_)___|         (_,_). '. |  _( )_\  |   _.-`   ||   '-.-'  
 |   |         | _ _--.   | .'   _    |   (_I_)  '  \   .---.        .---.  \  :| (_ o _)  |.'   _    ||   |      
 |   |         |( ' ) |   | |  _( )_  |  (_(=)_)  \  `-'    /        \    `-'  ||  (_,_)\  ||  _( )_  ||   |
 |   |         (_{;}_)|   | \ (_ o _) /   (_I_)    \       /          \       / |  |    |  |\ (_ o _) //   )
 '---'         '(_,_) '---'  '.(_,_).'    '---'     `'-..-'            `-...-'  '--'    '--' '.(_,_).' `--'
EOF
    printf "%s\n"

# Function to list installed snaps with size, sorted from biggest to smallest
list_installed_snaps() {
    echo "=== Installed Snaps (Sorted by Size) ==="
    printf "%-20s %-15s %-10s %-20s %-15s %-10s\n" "Name" "Version" "Rev" "Tracking" "Publisher" "Size"
    
    # Temporary file to store sorted snaps
    temp_file=$(mktemp)
    
    # Process snap list, calculate sizes, and sort
    snap list | tail -n +2 | while read -r name version rev tracking publisher notes; do
        # Get snap size in bytes for proper sorting
        size_bytes=$(find /var/lib/snapd/snaps/ -type f -name "${name}_*.snap" -printf "%s\n" 2>/dev/null | head -1)
        size_human=$(du -h /var/lib/snapd/snaps/${name}_*.snap 2>/dev/null | cut -f1)
        
        # If no size found, use 0
        size_bytes=${size_bytes:-0}
        size_human=${size_human:-N/A}
        
        # Store in temp file with sortable format
        echo "$size_bytes $name $version $rev $tracking $publisher $size_human" >> "$temp_file"
    done
    
    # Sort by size (numeric sort, reverse order) and print
    sort -rn "$temp_file" | while read -r size_bytes name version rev tracking publisher size_human; do
        printf "%-20s %-15s %-10s %-20s %-15s %-10s\n" "$name" "$version" "$rev" "$tracking" "$publisher" "$size_human"
    done
    
    # Clean up temporary file
    rm "$temp_file"
}

# Function to list downloaded snaps with size, sorted from biggest to smallest
list_downloaded_snaps() {
    echo "=== Downloaded Snaps (Sorted by Size) ==="
    printf "%-40s %-10s\n" "Snap File" "Size"
    
    # Find all snap files, get their sizes, sort from biggest to smallest
    find /var/lib/snapd/snaps/ -type f -name "*.snap" -print0 | xargs -0 du -b | sort -rn | while read -r size_bytes snap_path; do
        filename=$(basename "$snap_path")
        size_human=$(du -h "$snap_path" | cut -f1)
        printf "%-40s %-10s\n" "$filename" "$size_human"
    done
}

# Main script execution
if ! command -v snap &> /dev/null; then
    echo "Snap is not installed on this system."
    exit 1
fi

# Call functions
list_installed_snaps
list_downloaded_snaps

# Where to find your snaps
cat <<\EOF2

Downloaded Snaps Location: /var/lib/snapd/snaps 
It would be a good idea to remove unused stuff from this folder...
EOF2
    printf "%s\n"

# My github
printf "Script by \e]8;;https://github.com/saultools\e\\saul tools\e]8;;\e\\ on github \n"
printf  "bye bye \n"

Output on an example system: