Powershell小技巧之复合筛选

当你分析文本日志或筛选不通类型的信息时，你通常要使用 Where-Object。这里有一个通用脚本来说明复合筛选：

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