I have created a Bash script in order to shut down the pc.

You can integrate this script into a menu in the bash. An example you can see here in my blog entry. .

The script

#!/bin/bash

clear

#current date
datum=$(date --utc --date "$1" +%x)

#when the pc was turned on
einschaltuhrzeit=$(uptime -s | awk '{print $2}')

#counting the day until finish of the current year
restlichentage=$(((`date +%s`-`date -d "Dec 31 2025" +%s`+1)/86400))

echo "To the end of the year are $restlichentage days"
echo

#counting the day until finish my planned work days
echo "To my last day of work"  $(((`date +%s`-`date -d "Jul 01 2045" +%s`+1)/86400)) "days"
echo

b=$(if [ "$LOGNAME" == "sven" ]; then
    echo "Sven"
else
    # If the login name is not sven, then use the login name with big letters. 
    echo "${LOGNAME^}" 
fi)


# 2. Time with conditions
a=$(date +"%H")
c=$(date +"%T")

# 3. Time-dependent greeting
if [ "$a" -ge 6 ] && [ "$a" -lt 12 ]; then
    echo "Good morning" "$b" "Now it is" "$datum $c". The pc was turned on at "$einschaltuhrzeit"
elif [ "$a" -ge 12 ] && [ "$a" -lt 18 ]; then
    echo "Good day" "$b" "Now it is" "$datum $c". The pc was turned on at "$einschaltuhrzeit"
elif [ "$a" -ge 18 ] && [ "$a" -lt 20 ]; then
    echo "Good afternoon" "$b" "Now it is" "$datum $c". The pc was turned on at "$einschaltuhrzeit"
else
    echo "Good night" "$b" "Now it is" "$c"
fi


echo "---------------------------------------------------"


#moving PDF files from the home directory to the folder PDF where all PDF are saved
echo "Moving PDF's file from /home/sven to PDF/"
find . -maxdepth 1 -type f -iname '*.pdf*' -exec mv -t PDF/ {} +

#moving PDF files from the download folder to the folder PDF where all PDF are saved
echo "Moving the PDF files to the folder Downloads in /home/sven/Downloads"
echo "---------------------------------------------------"

shopt -s nullglob
pdfs_dl=( Downloads/*.pdf )
shopt -u nullglob

if [ ${#pdfs_dl[@]} -eq 0 ]; then
    echo "There are no PDF files anymore in Downloads"
else
    mv "${pdfs_dl[@]}" PDF/
    echo "The PDF files were moved to the folder PDF"
fi

#deleting all rss files in the download folder.

echo "--------------------------------------------------"
echo "Checking if there are rss files in the folder Download"
echo "--------------------------------------------------"


shopt -s nullglob
rss_dl=( Downloads/*.rss )
shopt -u nullglob

if [ ${#rss_dl[@]} -eq 0 ]; then
    echo "There are no rss files anymore"
else
    rm "${rss_dl[@]}"
    echo "The downloaded RSS files are deleted"
fi

if [ ! -f *.pdf ]; then 
	echo "No PDF files in the home directory"
else
	mv *.pdf PDF/
	echo "PDF files were moved to the folder PDF"
fi

echo "--------------------------------------------------"
echo "Deleting the pip cache of the python modules"
echo "--------------------------------------------------"

#deleting the pip cache.

echo "----------------------------------------------------"
echo "Deleting the pip cache"

pip cache purge

sleep 2

echo "--------------------------------------------------"
echo
echo

# if you want to reboot or shutdown the pc?
read -p "Do you want to reboot or shutdown your pc (r=reboot / s=shutdown)? (s will turn off the pc): " action

if [[ "$action" == "s" ]]; then
    echo "Initiating immediate shutdown..."
    shutdown now
    # exit 0 is optional, as shutdown terminates the system anyway.

elif [[ "$action" == "r" ]]; then
    echo "Initiating immediate reboot..."
    reboot
    # exit 0 is optional,

else
    # If the input is neither “s” nor 'r'
    echo "No shutdown or reboot command entered. Script continues."
    # The script would continue or end normally here.
fi