# 注意点号(.)和文件名中间有一空格
. filename
# 或
source filename
实例:
[root@hadoop01 shell]# vi test1.sh
#!/bin/bash
name=timo
[root@hadoop01 shell]# vi test2.sh
#!/bin/bash
tag="this is a boy"
[root@hadoop01 shell]# vi test3.sh
#!/bin/bash
. ./test1.sh
source ./test2.sh
echo $name$tag
[root@hadoop01 shell]# chmod a+x test3.sh
[root@hadoop01 shell]# ./test3.sh
timothis is a boy