function

test (){echo "abctest"}

test

结果 

abctest

 

zzx@ubuntu:~$ cat te1.sh
#!/bin/bash
fun(){
echo nihao
echo $1 $2
return $(($1+$2))
}
fun 11 2
 
echo $?
 
total=$(fun 22 3) #这一步并没有打印 nihao 22 33
 
echo $?   #输出上一步return  25
 
echo $total
 
echo $?

结果

nihao
11 2
13
25
nihao 22 3
0