#!/bin/bash
#background-loop.sh
for i in 1 2 3 4 5 6 7 8 9 10 #µÚÒ»¸öÑ»·
do
echo -n "$i"
done& #ÔÚºǫ́ÔËÐÐÕâ¸öÑ»·
echo #Õâ¸ö‘echo‘ijЩʱºò½«²»»áÏÔʾ.
for i in 11 12 13 14 15 16 17 18 19 20 #µÚ¶þ¸öÑ»·
do
echo -n "$i"
done
echo #Õâ¸ö‘echo‘ijЩʱºò½«²»»áÏÔʾ.
exit 0
原文：http://www.cnblogs.com/bjxing/p/4203949.html