dos拼接字符串以及截取字符串

1、dos下拼接字符串

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在CODE上查看代码片 [图片上传失败...(image-6f17ac-1516931943095)]

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1. @echo off
2. set a=aaaaa
3. set b=bbbbb
4. set c=%a%%b%
5. echo %c%
6. pause

以上代码将a和b的值拼接后赋给了变量c，运行结果：

image

2、dos下截取字符串

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在CODE上查看代码片 [图片上传失败...(image-2bf3f6-1516931943095)]

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1. @echo off
2. set a=how are you!
3. echo %a:~0,5%
4. pause

以上代码截取了字符串a，从第0个字符到第5个字符，运行结果：

image

3、字符串截取的另外一种方式

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在CODE上查看代码片 [图片上传失败...(image-c4ee87-1516931943094)]

<embed id="ZeroClipboardMovie_3" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="16" height="16" name="ZeroClipboardMovie_3" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=3&width=16&height=16" wmode="transparent" style="box-sizing: border-box;">

1. @echo off
2. set a=how are you!
3. echo %a:~1,-3%
4. pause

以上代码截取了字符串a，从第1个字符到倒数第3个字符，运行结果：

image

4、dos截取完整字符串

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在CODE上查看代码片 [图片上传失败...(image-877215-1516931943094)]

<embed id="ZeroClipboardMovie_4" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="16" height="16" name="ZeroClipboardMovie_4" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=4&width=16&height=16" wmode="transparent" style="box-sizing: border-box;">

1. @echo off
2. set a=how are you!
3. echo %a:~0%
4. pause

以上代码截取了字符串a，从第0个字符到末尾的字符，运行结果：

image

5、dos拼接截取字符串并用

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在CODE上查看代码片 [图片上传失败...(image-8bf9c5-1516931943094)]

<embed id="ZeroClipboardMovie_5" src="http://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="16" height="16" name="ZeroClipboardMovie_5" align="middle" allowscriptaccess="always" allowfullscreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="id=5&width=16&height=16" wmode="transparent" style="box-sizing: border-box;">

1. @echo off
2. set a=my a
3. set b=bookb
4. set c=%a:_0,3%%b:0,-1%
5. echo %c%
6. pause

运行结果：

image