PowerShell Select-String：在字符串和文件中查找文本

语法

Select-String
      [-Culture <String>]
      [-Pattern] <String[]>
      [-Path] <String[]>
      [-SimpleMatch]
      [-CaseSensitive]
      [-Quiet]
      [-List]
      [-NoEmphasis]
      [-Include <String[]>]
      [-Exclude <String[]>]
      [-NotMatch]
      [-AllMatches]
      [-Encoding <Encoding>]
      [-Context <Int32[]>]
      [<CommonParameters>]

Demo1:：查找区分大小写的匹配项

'Hello', 'HELLO' | Select-String -Pattern 'HELLO' -CaseSensitive -SimpleMatch

Demo2：查找文本文件中的匹配项

Select-String -Path .\*.txt -Pattern 'Get-'

Demo3：查找与模式不匹配的字符串

Select-String -Path .\Command.txt -Pattern 'Get', 'Set'  -NotMatch

Demo4：把匹配结果输出为文件

Select-String -Path .\Command.txt -Pattern 'Get', 'Set'   | Out-File 'C:\match.txt'

Demo5：匹配多个关键字

'a','afsss','dd','fff','ggg' | Select-String -Pattern '[a-zA-Z]+(sss|ggg)'

References：

Select-String