copyPBar.sh

alias cp='rsync -p --progress'
# copy with progressbar

download.sh

#!/bin/bash
PWD=~/Downloads
ls > /dev/null    # if any case. avoid to kill self

while true; do
     /usr/bin/aria2c -c -x14 -s14 http://...
     PID=$!
     echo $PID
     sleep 25

     while [[ $( ps -ef | grep -e aria2c -e "##############" | grep -v "#####" | wc -l ) > 0 ]]; do
	       echo "waiting aria to die..."
	       kill $PID
	       sleep 3
     done


done