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select ch in "monitor network!" "monitor running process!" "monitor system!" "monitor oracle!" "exit!" <br>
do <br>
  case $ch in <br>
    "monitor network!") <br>
      netm <br>
      exec $0 <br>
      ;; <br>
    "monitor running process!") <br>
      prom <br>
      exec $0 <br>
      ;; <br>
    "monitor system!") <br>
      sysm <br>
      exec $0 <br>
      ;; <br>
    "monitor oracle!") <br>
      oram <br>
      exec $0 <br>
      ;; <br>
    "exit!") <br>
      break <br>
      ;; <br>
    *) exec $0 <br>
      ;; <br>
  esac <br>
done <br>
<br>
感谢DX再次帮助，已经快到成功的彼岸了，只是还有最后一个小小的问题，就是从二级菜单返回主菜单的时候，用exec $0，报错，错误是prom [46]:not found.这个时候，$0应该是指的prom，我用echo $0验证过，是这样，但是直接调用本身可以，换成exec $0,就不行了，并且我是想从二级菜单返回一级菜单。我换为break，但是不稳定，总是不能如我的想法一样返回主菜单。<br>
其他都已经OK！了，从三级菜单返回到二级都很正常。<br>
是不是我哪个参数设置的不对？<br>
<br>
<br>
不知道怎么会这样，难道你的KSH和我的还不一样？我在OpenBSD的KSH下运行通过的，而且管是$0还是break，都能很好地运行。是不是你没设定 -x 可执行位？（必须！）<br>
<br>
不管它了！用其它方法解决，既然你说3级回到2级没问题，那么建议你把程序的最后一段放入子程序main，应该就行了。。。（同样在我的机器上已通过验证）<br>
<br>
代码：<br>
<br>
 <br>
#!/bin/ksh           #  &lt;============== 可能会与你不一样 <br>
 <br>
######################################## <br>
# define subroutines <br>
 <br>
# this is your process monitoring subroutine <br>
prom() { <br>
echo ' <br>
+===================================+ <br>
|   Menu level 2 --   routine prom  | <br>
+===================================+ <br>
' <br>
select ch in "monitor network!" "monitor running process!" "monitor system!" "monitor oracle!" "back" "exit" <br>
do <br>
  case $ch in <br>
    "monitor network!") <br>
      netm <br>
      prom <br>
      ;; <br>
    "monitor running process!") <br>
      abc <br>
      prom <br>
      ;; <br>
    "monitor system!") <br>
      sysm <br>
      prom <br>
      ;; <br>
    "monitor oracle!") <br>
      oram <br>
      prom <br>
      ;; <br>
    "back") <br>
      main          #  &lt;==================== 修改！ <br>
      ;; <br>
    "exit") <br>
      exit 0 <br>
      ;; <br>
  esac <br>
done <br>
 <br>
} <br>
 <br>
# another subroutine <br>
 <br>
abc () { <br>
echo ' <br>
+-----------------------------------+ <br>
|   Menu level 3 -- routine abc     | <br>
+-----------------------------------+ <br>
' <br>
 <br>
select ch in "monitor network!" "monitor running process!" "monitor system!" "monitor oracle!" "back" "exit" <br>
do <br>
  case $ch in <br>
    "monitor network!") <br>
      dosomething1 <br>
      abc <br>
      ;; <br>
    "monitor running process!") <br>
      dosomething2 <br>
      abc <br>
      ;; <br>
    "monitor system!") <br>
      dosomething3 <br>
      abc <br>
      ;; <br>
    "monitor oracle!") <br>
      dosomething4 <br>
      abc <br>
      ;; <br>
    "back") <br>
      prom <br>
      ;; <br>
    "exit") <br>
      exit 0 <br>
      ;; <br>
  esac <br>
done <br>
} <br>
 <br>
# end   <br>
########################################## <br>
 <br>
 <br>
########################################## <br>
#  main program <br>
 <br>
 <br>
main() {           #  &lt;============== 加入 <br>
 <br>
echo ' <br>
************************************* <br>
*  system&network  monitor program  * <br>
*    version: 1.0                   * <br>
************************************* <br>
' <br>
 <br>
select ch in "monitor network!" "monitor running process!" "monitor system!" "monitor oracle!" "exit!" <br>
do <br>
  case $ch in <br>
    "monitor network!") <br>
      netm <br>
      exec $0 <br>
      ;; <br>
    "monitor running process!") <br>
      prom <br>
      exec $0 <br>
      ;; <br>
    "monitor system!") <br>
      sysm <br>
      exec $0 <br>
      ;; <br>
    "monitor oracle!") <br>
      oram <br>
      exec $0 <br>
      ;; <br>
    "exit!") <br>
      break <br>
      ;; <br>
    *) exec $0 <br>
      ;; <br>
  esac <br>
done <br>
}           #  &lt;============== 加入 <br>
 <br>
main        #  &lt;============== 加入 <br>
<br>
<br>
<br>
老大!可以了!用main可以了!我没有想到直接这样调用就可以解决问题!牛叉啊!<br>
</FONT><br>
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