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Powershell小技巧之復合篩選

 更新時間:2014年09月05日 09:56:37   投稿:hebedich  
這篇文章主要介紹了Powershell復合篩選的小技巧 ,需要的朋友可以參考下

當你分析文本日志或篩選不通類型的信息時,你通常要使用 Where-Object。這里有一個通用腳本來說明復合篩選:

# logical AND filter for ALL keywords 
Get-Content -Path C:\windows\WindowsUpdate.log | 
 Where-Object { $_ -like '*successfully installed*' } | 
 Where-Object { $_ -like '*framework*' } | 
 Out-GridView
 
# above example can also be written in one line 
# by using the -and operator 
# the resulting code is NOT faster, though, just harder to read 
Get-Content -Path C:\windows\WindowsUpdate.log | 
 Where-Object { ($_ -like '*successfully installed*') -and ($_ -like '*framework*') } | 
 Out-GridView
 
# logical -or (either condition is met) can only be applied in one line 
Get-Content -Path C:\windows\WindowsUpdate.log | 
 Where-Object { ($_ -like '*successfully installed*') -or ($_ -like '*framework*') } | 
 Out-GridView

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