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中国DOS联盟论坛 » DOS学习入门 & 精彩文章 (教学室) » Another usage of copy View 7,826 Replies 29
Original Poster Posted 2009-07-07 10:59 ·  中国 河北 石家庄 联通
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Everyone knows that "copy" means copy. Recently, I found another usage of copy in learning DOS. That is to merge a text file into another non-text file to achieve the role of hiding. For example, if there is a text document on the local disk, it can be merged into, for example, an image, MP3 and other executable files. The syntax is the same. Friends who are interested can give it a try! I will upload my screenshot later!
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snzy342 +1 2009-11-29 02:14
sl543001 +2 2010-02-07 12:09
Floor 2 Posted 2009-07-08 00:58 ·  中国 四川 成都 电信
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Hurry up and send the screenshot.
Floor 3 Posted 2009-07-08 05:39 ·  中国 江西 联通
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Just try it yourself...
Floor 4 Posted 2009-07-10 05:25 ·  中国 山东 威海 联通
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I've known that for a long time. It's just the file extension! The syntax for merging files.
Floor 5 Posted 2009-07-31 05:58 ·  中国 河北 廊坊 电信
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This is still practical for beginners, but the file will become larger, and careful people will still find something wrong.

The command is like this. Below is to hide 1.rar in 2.jpg.

copy/b 2.jpg + 1.rar 1.jpg
Floor 6 Posted 2009-08-06 03:45 ·  中国 广东 佛山 电信
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copy/b 2.jpg + 1.rar 1.jpg
Now I understand why the merged file didn't display the image before. It turned out that the /b parameter was missing.
Floor 7 Posted 2009-08-06 03:47 ·  中国 广东 佛山 电信
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I want to ask. How can I separate these two merged files?
Floor 8 Posted 2009-08-09 01:12 ·  中国 北京 联通
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Study!
Floor 9 Posted 2009-09-04 11:00 ·  中国 浙江 金华 义乌市 电信
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Floor 10 Posted 2009-09-13 00:54 ·  中国 湖南 湘潭 电信
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Can they be separated after merging? How to separate them
Floor 11 Posted 2009-09-16 12:54 ·  马来西亚
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I've known that for a long time. It's just the file extension! The syntax for merging files.
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Floor 12 Posted 2009-11-16 18:28 ·  中国 天津 联通
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Floor 13 Posted 2009-11-17 12:05 ·  中国 江西 南昌 青山湖区 电信
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Floor 14 Posted 2009-11-17 22:08 ·  中国 安徽 合肥 移动
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Okay, I tried it before, and I used that to tie up a horse...
Floor 15 Posted 2009-11-21 14:01 ·  中国 广东 深圳 鹏博士宽带
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