Parallel execution of bash scripts

main.sh

#!/bin/bash

declare -a status=()
declare -a threads=( 
	[0]='sh ./thread-sleep-5.sh'
	[1]='sh ./thread-sleep-10.sh'
	[2]='sh ./thread-sleep-3.sh'
)

date

for (( i = 0 ; i < ${#threads[@]} ; i++ ))
do
	${threads[$i]} &
	status[$i]=$!
done

for (( i = 0 ; i < ${#status[@]} ; i++ ))
do
	wait ${status[$i]}
done

date


# Output

#Mi 29. Feb 17:09:55 CET 2012
#slept 3 seconds
#slept 5 seconds
#slept 10 seconds
#Mi 29. Feb 17:10:05 CET 2012

thread-sleep-10.sh

#!/bin/bash
sleep 10
echo 'slept 10 seconds'

thread-sleep-3.sh

#!/bin/bash
sleep 3
echo 'slept 3 seconds'

thread-sleep.5.sh

#!/bin/bash
sleep 5
echo 'slept 5 seconds'