Mount Ubuntu snap package for editing

mount_snap_for_edit.sh

#!/bin/bash -x

function mount_snap() {
    local snap_name=$1
    local snap_version=$(snap list | grep $snap_name | awk '{print $3}')
    local snap_name_escaped=$(echo $snap_name | sed 's/-/\\x2d/g')
    local snap_dir=/var/lib/snapd/snaps
    local tmp_dir=$(mktemp -d)

    sudo systemctl stop snap-$snap_name_escaped-$snap_version.mount
    sudo /usr/lib/snapd/snap-discard-ns $snap_name
    cd $tmp_dir || exit 1

    local snap_file=$snap_dir/${snap_name}_${snap_version}.snap
    sudo chmod o+r $snap_file
    sudo unsquashfs -d snap $snap_file
    echo "Snap $snap_name mounted in $tmp_dir/snap"
    read  -r -p "Hit Enter to repackage the snap after you're done editing"

    sudo rm -rf $snap_file
    sudo mksquashfs snap $snap_file -noappend -comp lzo -no-fragments
    sudo systemctl start snap-$snap_name_escaped-$snap_version.mount

    read  -r -p "Hit Enter to cleanup $tmp_dir/snap"
    sudo rm -rf $tmp_dir/snap
}

# sample usage
mount_snap "pycharm-professional"