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中国DOS联盟论坛 » DOS批处理 & 脚本技术（批处理室） » [Sharing] Advanced Application Examples of the "FOR" Command
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Floor 31
Posted 2007-06-28 16:47 · 中国 广东 深圳 电信
Floor 32
Posted 2007-07-01 13:03 · 俄罗斯 莫斯科 华为云
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Posted 2007-07-10 15:35 · 中国 江苏 宿迁 电信
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willsort's eternal fan
『生如夏花之绚烂
死若秋叶之静美』 dos做到了
死若秋叶之静美』 dos做到了
Floor 34
Posted 2007-07-11 12:09 · 中国 河北 秦皇岛 电信
Very good, but why does it feel like it's incomplete!!
Floor 35
Posted 2007-07-27 04:29 · 中国 上海 电信
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I've read it several times. There are parts I still don't quite understand.... Even copying the code down and running it doesn't work.
No matter what I do with the part below, I can't get the effect I want... OP, please take another look.
This command can be even more powerful. For example, your todel.txt might not be as clean as in the example above, but generated directly by DIR, with some useless information in it, like this:
Volume in drive D is DATA
Volume Serial Number is C47C-9908
Directory of D:\tmp
09/26/2001 12:50 PM 18,426 alg0925.txt
12/02/2001 04:29 AM 795 bsample.txt
04/11/2002 04:18 AM 2,043 invitation.txt
4 File(s) 25,651 bytes
0 Dir(s) 4,060,700,672 bytes free
for can still extract the filenames from it and operate on them:
for /f "skip=5 tokens=5" %a in (todel.txt) do @if exist %a DEL %a
Of course, the command above performs deletion. If you just want to see which files will be operated on, replace DEL with ech
for /f "skip=5 tokens=5" %a in (todel.txt) do @if exist %a echo %a
You will see:
alg0925.txt
bsample.txt
invitation.txt
No matter what I do with the part below, I can't get the effect I want... OP, please take another look.
This command can be even more powerful. For example, your todel.txt might not be as clean as in the example above, but generated directly by DIR, with some useless information in it, like this:
Volume in drive D is DATA
Volume Serial Number is C47C-9908
Directory of D:\tmp
09/26/2001 12:50 PM 18,426 alg0925.txt
12/02/2001 04:29 AM 795 bsample.txt
04/11/2002 04:18 AM 2,043 invitation.txt
4 File(s) 25,651 bytes
0 Dir(s) 4,060,700,672 bytes free
for can still extract the filenames from it and operate on them:
for /f "skip=5 tokens=5" %a in (todel.txt) do @if exist %a DEL %a
Of course, the command above performs deletion. If you just want to see which files will be operated on, replace DEL with ech
for /f "skip=5 tokens=5" %a in (todel.txt) do @if exist %a echo %a
You will see:
alg0925.txt
bsample.txt
invitation.txt
Floor 36
Posted 2007-07-28 04:23 · 中国 上海 电信
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These last couple of days I've kept reading this article... and finally understood a tiny bit of it...
Don't know why, but I have to use this statement to make it show the effect the OP described. But it still doesn't achieve the effect of deleting the other extra characters... still researching...
for /f "skip=3 tokens=5" %%a in (todel.txt) do @echo %%a
alg0925.txt
bsample.txt
invitation.txt
Don't know why, but I have to use this statement to make it show the effect the OP described. But it still doesn't achieve the effect of deleting the other extra characters... still researching...
for /f "skip=3 tokens=5" %%a in (todel.txt) do @echo %%a
alg0925.txt
bsample.txt
invitation.txt
Floor 37
Posted 2007-08-15 16:58 · 中国 广东 佛山 顺德区 电信
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/... hehe, reading the OP's post reminded me of another hard problem
for /f %a in (bingdu.txt) do del %a /f /s /q /a
The contents of bingdu.txt are:
1.txt
2.txt
3.txt
4.txt
I use it to kill viruses... / finally succeeded... thanks, OP... you solved a big problem for me, it had bothered me for a long time
for /f %a in (bingdu.txt) do del %a /f /s /q /a
The contents of bingdu.txt are:
1.txt
2.txt
3.txt
4.txt
I use it to kill viruses... / finally succeeded... thanks, OP... you solved a big problem for me, it had bothered me for a long time
这家伙很聪明 什么都没留下
Floor 38
Posted 2007-08-26 21:56 · 中国 云南 红河哈尼族彝族自治州 电信
Bump
Floor 39
Posted 2007-10-03 03:06 · 中国 广东 广州 海珠区 电信
Bookmarked
Floor 40
Posted 2007-10-08 21:37 · 中国 福建 泉州 惠安县 电信
Why do I see two identical posts?
Floor 41
Posted 2007-10-09 08:09 · 中国 上海 杨浦区 电信
This is really explained well, collected, I'll read it slowly
Floor 42
Posted 2007-11-23 00:25 · 中国 广东 广州 天河区 电信
I'm new here, just saw this, thanks
Floor 43
Posted 2007-11-24 13:00 · 中国 湖北 黄冈 电信
After messing with it for ages, I finally figured out how to use for. Thanks, OP, o(∩_∩)o...
Floor 44
Posted 2007-11-29 15:10 · 中国 北京 大兴区 联通
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I just had to reply. It solved the for trouble that had bothered me for 2 months. I can't help sincerely exclaiming: very good! Very powerful!
Floor 45
Posted 2007-11-30 00:53 · 中国 内蒙古 巴彦淖尔 中移铁通
The content posted by the OP is detailed, Xiao'er gives you a bump!!
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