我正在powershell中构建一个解析器，用于将vmstat日志转储转换为CSV文件，作为图形框架（Rickshaw）的输入。我在文件中重复了“标题”，我想删除它。数据样本如下：
Tue Sep 1 14:03:26 2015: procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu-----
Tue Sep 1 14:03:26 2015: r b swpd free buff cache si so bi bo in cs us sy id wa st
Tue Sep 1 14:03:26 2015: 0 1 224412 358316 248772 63286912 0 0 388 267 1 1 8 0 91 1 0
Tue Sep 1 14:03:36 2015: 0 0 224412 357572 248796 63286916 0 0 0 8 220 261 0 0 100 0 0
Tue Sep 1 14:03:46 2015: 0 0 224412 357696 248808 63286916 0 0 0 14 276 293 0 0 100 0 0
Tue Sep 1 14:03:56 2015: 0 0 224412 357688 248808 63286916 0 0 0 13 231 269 0 0 100 0 0
Tue Sep 1 14:04:06 2015: 0 0 224412 357300 248812 63286920 0 0 0 17 266 283 0 0 100 0 0
Tue Sep 1 14:06:56 2015: procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu-----
Tue Sep 1 14:06:56 2015: r b swpd free buff cache si so bi bo in cs us sy id wa st
Tue Sep 1 14:06:56 2015: 1 0 224412 357348 248976 63286928 0 0 0 1 182 231 0 0 100 0 0
Tue Sep 1 14:07:06 2015: 0 0 224412 357348 248980 63286928 0 0 0 9 211 251 0 0 100 0 0
Tue Sep 1 14:07:16 2015: 0 0 224412 357136 248988 63286928 0 0 0 19 287 279 0 0 100 0 0
Tue Sep 1 14:07:26 2015: 0 0 224412 357012 249004 63286928 0 0 0 9 199 244 0 0 100 0 0
Tue Sep 1 14:07:36 2015: 0 0 224412 357080 249012 63286928 0 0 0 7 235 258 0 0 100 0 0
Tue Sep 1 14:10:26 2015: procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu-----
Tue Sep 1 14:10:26 2015: r b swpd free buff cache si so bi bo in cs us sy id wa st
Tue Sep 1 14:10:26 2015: 12 0 224400 351832 265992 62560000 6 0 15 25262 8579 617 96 4 0 0 0
Tue Sep 1 14:10:36 2015: 12 0 224400 379200 266064 62444728 0 0 2 16727 8418 761 97 3 0 0 0
我使用这段代码来完成它。
Get-Content "C:\Projects\Play\Garage\Data_Processing\Sampler.log" | select-string -pattern 'procs|swpd' -notmatch | Out-File "C:\Projects\Play\Garage\Data_Processing\Refined.log"
生成的文件删除了所需的行，但在开头和结尾插入了空白行。因此，我无法将此数据/文件发送到下一步解析。我能做错什么？
结果文件数据：
> [BLANK LINE]
Tue Sep 1 14:03:26 2015: 0 1 224412 358316 248772 63286912 0 0 388 267 1 1 8 0 91 1 0
Tue Sep 1 14:03:36 2015: 0 0 224412 357572 248796 63286916 0 0 0 8 220 261 0 0 100 0 0
Tue Sep 1 14:03:46 2015: 0 0 224412 357696 248808 63286916 0 0 0 14 276 293 0 0 100 0 0
Tue Sep 1 14:03:56 2015: 0 0 224412 357688 248808 63286916 0 0 0 13 231 269 0 0 100 0 0
Tue Sep 1 14:04:06 2015: 0 0 224412 357300 248812 63286920 0 0 0 17 266 283 0 0 100 0 0
Tue Sep 1 14:06:56 2015: 1 0 224412 357348 248976 63286928 0 0 0 1 182 231 0 0 100 0 0
Tue Sep 1 14:07:06 2015: 0 0 224412 357348 248980 63286928 0 0 0 9 211 251 0 0 100 0 0
Tue Sep 1 14:07:16 2015: 0 0 224412 357136 248988 63286928 0 0 0 19 287 279 0 0 100 0 0
Tue Sep 1 14:07:26 2015: 0 0 224412 357012 249004 63286928 0 0 0 9 199 244 0 0 100 0 0
Tue Sep 1 14:07:36 2015: 0 0 224412 357080 249012 63286928 0 0 0 7 235 258 0 0 100 0 0
Tue Sep 1 14:10:26 2015: 12 0 224400 351832 265992 62560000 6 0 15 25262 8579 617 96 4 0 0 0
Tue Sep 1 14:10:36 2015: 12 0 224400 379200 266064 62444728 0 0 2 16727 8418 761 97 3 0 0 0
>[BLANK LINE]
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答案 0 :(得分：3)
不确定为什么meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="themes/MyTheme.min.css"/>
<link rel="stylesheet"href="http://code.jquery.com/mobile/[version]/jquery.mobile-[version].min.css" />
<script src="http://code.jquery.com/jquery-[version].min.js"></script>
<script src="http://code.jquery.com/mobile/[version]/jquery.mobile[version].min.js"></script>
会出现空行，但您可以将Select-String替换为不会返回空行的简单Select-String
这是我怎么做的：
Where-Object