shell include script

两个文件：
# cat a.sh
echo "===========hello========="

name='a.sh'

# cat b.sh
. ./a.sh                  //include方式:  . 路径/脚本名

echo "name is $name"

执行b.sh                  //shell include 会执行include脚本的每一行
# sh b.sh
===========hello=========
name is a.sh