Asking review of slackpkg script . @bassmadrigal & chrisretusn

Hello Bassmadrigal & Chrisretusn ,

Requesting review of the script below for when 15.+ becomes published .
Looking for suggestions of better methodologies &/or readability .

Tia , JimL

Code:#!/bin/bash
# Note: this shell script uses slackpkg-15.X and newer functions .
#
# V2a(202104211510) , Jim Laferriere <babydr@baby-dragons.com>
# V1c(201810181209) , "
#

# Tell us what version of slackware/slamd64 we are running
#
echo -en "\n$(cat /etc/slackware-version)\n\n"
cat << PROGDB
#
# Updating 'The package list' ie: program database .
#

PROGDB

slackpkg -batch=on -default_answer=y update

aAa=$(ls /var/lib/pkgtools/packages/slackpkg* | awk -F'/' '{print $6}')
bBb=$(slackpkg info slackpkg | grep "PACKAGE[[:space:]]NAME:" | awk -F":" '{print $2}' | sed -e's/[[:space:]]//g' -e's/\.txz$//')

if [ "${aAa}" != "${bBb}" ]; then

cat << PROGSLACKPKG
#
# Upgrading from ${aAa} to ${bBb}
#
# will also reload 'The package list' as successful install
# will remove the files needed for the remainder of the script .
#

PROGSLACKPKG

slackpkg -batch=on -default_answer=y upgrade slackpkg

slackpkg -batch=on -default_answer=y update

fi

cat << PROGNEW
#
# Install Any NEW packages .
#

PROGNEW

slackpkg -batch=on -default_answer=y install-new

cat << PROGUPG
#
# Upgrade installed packages that are updated .
#

PROGUPG

slackpkg -batch=on -default_answer=y upgrade-all

exit