timer

#!/usr/bin/env bash

# default timeout
timeout_mins=60
# while testing your script, making changes, you want this to be something like 1 or 2
sec_per_min=60

# check for command line input
if [ 0 -ne $# ]
then
    # assign the first command line param, no check, if it is a number, though!
    timeout_mins=$1
fi

echo ""
# now it does make sense, to have a variable in the for loop core
for i in $(seq $timeout_mins -1 1)
do
    echo -e "\e[1A\e[0K\r$i min left"
    sleep $sec_per_min
done

msg="$timeout_mins min countdown finished!"

echo -e "\e[1A\e[0K\r$msg"

notify-send --urgency="critical" -i stock_appointment-reminder Timer "$msg"

paplay /usr/share/sounds/freedesktop/stereo/complete.oga &
sleep .2
paplay /usr/share/sounds/freedesktop/stereo/complete.oga