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DOS批处理 & 脚本技术（批处理室） » 请问DOS下使用for命令的时候如何让其退出循环 Please tell me how to make the for command exit the loop under DOS

Floor1　sikro	Posted 2009-10-14 10:15
初级用户　Posts 32　Credits 195　From Amway
In batch scripting, to make the loop stop as soon as the first matching condition is found, you can use the `goto` statement. Here's how you can modify the code: ```batch @echo off for %%i in (z,y,x,w,v,u,t,s,r,q,p,o,n,m,l,k,j,i,h,g,f,e,d,c) do ( if exist %%i:\ghost\winxp.gho ( set drv=%%i goto :breakLoop REM Jump to the label to exit the loop ) ) :breakLoop ``` The key change is adding the `goto :breakLoop` inside the `if` block to jump to the label `:breakLoop` once the first match is found, which effectively exits the loop.

Floor2　523066680	Posted 2009-10-14 10:39
银牌会员　Posts 1,133　Credits 2,362
Write a label externally and then use goto ~ to jump out. This is okay in general. Oh, it's under DOS... I haven't tried it. Are you talking about pure DOS? But you wrote "%%i", is it under batch processing or under DOS... Got it, if it's under wincmd, it can be like this, using cmd /c "@echo off &for /l %a in (1,1,5) do (if %a==2 (echo %a &exit))" [ Last edited by 523066680 on 2009-10-14 at 12:08 ]

Floor3　sikro	Posted 2009-10-14 12:11
初级用户　Posts 32　Credits 195　From Amway
This script runs under pure DOS. I tried it and it works with %%i in DOS 7.1.

Floor4　523066680	Posted 2009-10-14 14:24
银牌会员　Posts 1,133　Credits 2,362
That is in the script, not in... Haven't used DOS 7.1 x_x

Floor5　cj000	Posted 2009-10-20 09:20
新手上路　Posts 9　Credits 10
Learn from the experts' experiences

Floor6　shengping	Posted 2010-12-18 10:02
初级用户　Posts 12　Credits 23
for %%i in (z,y,x,w,v,u,t,s,r,q,p,o,n,m,l,k,j,i,h,g,f,e,d,c) do if exist %%i:\ghost\winxp.gho set drv=%%i && goto end :end echo pass