shell脚本字符串处理

1、字符串处理，
请编写脚本code1.sh，要求输入逗号隔开的若干个名字，每个名字单独输出hello名字，how are you
例子：
输入 sh code1.sh perter,ken,zoe
则输出
hello peter,how are you！
hello ken,how are you！
hello zoe,how are you！

脚本功能如下
#!/bin/bash

nf=`echo "$1" | awk -F, '{print NF}'`
for i in `seq 1 $nf`
do
a=`echo $1 | cut -d ',' -f $i`
echo hello $a,How are you!
done

执行结果如下

[root@localhost opt]# sh b.sh perter,jenkins,tom
hello perter,How are you!
hello jenkins,How are you!
hello tom,How are you!