Save DNF installed packege log.

save_dnfLog.sh

#!/bin/bash

script_dir=$(dirname $(readlink -f $0))                                 # script dir

function guide() {
echo "usage: ./`basename $0` [-u] [-s <app_name>]"
echo "-u      update log"
echo "-s      specific app log"
echo "-l      list packages"
}

function updateLog() {
fileName="$(date +%d-%m-%Y)_after_update_installed"
echo -e "write app log\nMissing [CTRL+D] for exit from stdin\n"
stdText=$(</dev/stdin)
echo "$stdText" >> $fileName
echo -e "  \n\nlog saved to $fileName"
}

function specific() {
fileName="$(date +%d-%m-%Y)_after_${appName}_installed"
echo -e "write app log\nMissing [CTRL+D] for exit from stdin\n"
stdText=$(</dev/stdin)
echo "$stdText" >> $fileName
echo -e "  \n\nlog saved to $fileName"
}

while getopts ":us:l" opt; do
  case ${opt} in
    u ) updateLog ;;
    s ) appName=${OPTARG}; specific ;;
    l ) ls -1 $script_dir | grep -o -P '(?<=_).*(?=_)' | grep -o -P '(?<=_).*'|grep -v 'update' | awk 1 ORS=' ' ;;
    : ) echo "Missing option argument for -$OPTARG <app_name>" ;;
  esac
done

if [ "$#" -lt 1 ]; then
    guide
fi