XTerm Timer für Linux

timer 
timer-start

#!/bin/bash
to=$1
while [[ $to -ge 1 ]]; do
 digits=$(echo $to | sed -e 's/\(.\)/\1 /g')  
 echo -en "\r   Countdown  $digits \r"   
 sleep 1; to=$((to-1))
done

#!/bin/bash
time_random () {
 time=$RANDOM
 #Scales time down within 400
 let "time %= 400"  
 #time inbetween 900 and 1300
 time=$((900+$time))
}
time_random
./hier_kann_was_Ausführbares_hin  & 
xterm -fs 22x30 -geometry 23x1 -bg black -fg red -cr black -title "Countdown $time" -e "$HOME/timer $time"  

# ./timer-start.