Create Log File in Powershell

问题:

I have the below code and currently it loads all the information on screen. I want it to log to a log file on D:\Apps\Logs.

The log file needs to have the name of the computer it is loading against - so COMPUTERNAME.log

Any idea how I can do this?

Thanks

$computer = gc env:computername

$onetcp = ((get-childitem c:\windows\system32\drivers\tcpip.sys).Versioninfo.ProductMajorPart).tostring() $twotcp = ((get-childitem c:\windows\system32\drivers\tcpip.sys).Versioninfo.ProductMinorPart).tostring() $threetcp = ((get-childitem c:\windows\system32\drivers\tcpip.sys).Versioninfo.ProductBuildPart).tostring() $fourtcp = ((get-childitem c:\windows\system32\drivers\tcpip.sys).Versioninfo.ProductPrivatePart).tostring()


$onedfsr = ((get-childitem c:\windows\system32\dfsrs.exe).Versioninfo.ProductMajorPart).tostring() $twodfsr = ((get-childitem c:\windows\system32\dfsrs.exe).Versioninfo.ProductMinorPart).tostring() $threedfsr = ((get-childitem c:\windows\system32\dfsrs.exe).Versioninfo.ProductBuildPart).tostring() $fourdfsr = ((get-childitem c:\windows\system32\dfsrs.exe).Versioninfo.ProductPrivatePart).tostring()

write-host TCPIP.sys Version on $computer is: "$onetcp.$twotcp.$threetcp.$fourtcp" Write-Host write-host DFSRS.exe Version on $computer is: "$onedfsr.$twodfsr.$threedfsr.$fourdfsr"

Write-Host

If (get-wmiobject win32_share | where-object {$_.Name -eq "REMINST"}) {   Write-Host "The REMINST share exists on $computer" } Else {   Write-Host "The REMINST share DOES NOT exist on $computer - Please create as per standards"  }   Write-Host

$hotfix1 = Get-HotFix -Id KB2450944 -ErrorAction SilentlyContinue $hotfix2 = Get-HotFix -Id KB2582284 -ErrorAction SilentlyContinue $hotfix3 = Get-HotFix -Id KB979808 -ErrorAction SilentlyContinue

If ($hotfix1) {     Write-Host "Hotfix KB2450944 is installed"
-BackgroundColor Green -ForegroundColor Black   } else {    Write-Host "Hotfix KB2450944 is NOT installed - Please ensure you install this hotfix" -ForegroundColor "red"   }


If ($hotfix2) {     Write-Host "Hotfix KB2582284 is installed"
-BackgroundColor Green -ForegroundColor Black   } else {    Write-Host "Hotfix KB2582284 is NOT installed - Please ensure you install this hotfix" -ForegroundColor "red"   }

If ($hotfix3) {     Write-Host "Hotfix KB979808 is installed"
-BackgroundColor Green -ForegroundColor Black   } else {    Write-Host "Hotfix KB979808 is NOT installed - Please ensure you install this hotfix" -ForegroundColor "red"    }

回答1:

Put this at the top of your file:

$Logfile = "D:\Apps\Logs\$(gc env:computername).log"

Function LogWrite
{
   Param ([string]$logstring)

   Add-content $Logfile -value $logstring
}

Then replace your Write-host calls with LogWrite.

回答2:

A function that takes these principles a little further.

1. Add's timestamps - can't have a log without timestamps.
2. Add's a level (uses INFO by default) meaning you can highlight big issues.

3. Allows for optional console output. If you don't set a log destination, it simply pumps it out.

   Function Write-Log {
       [CmdletBinding()]
       Param(
       [Parameter(Mandatory=$False)]
       [ValidateSet("INFO","WARN","ERROR","FATAL","DEBUG")]
       [String]
       $Level = "INFO",
   
       [Parameter(Mandatory=$True)]
       [string]
       $Message,
   
       [Parameter(Mandatory=$False)]
       [string]
       $logfile
       )
   
       $Stamp = (Get-Date).toString("yyyy/MM/dd HH:mm:ss")
       $Line = "$Stamp $Level $Message"
       If($logfile) {
           Add-Content $logfile -Value $Line
       }
       Else {
           Write-Output $Line
       }
   }
   

回答3:

Gist with log rotation: https://gist.github.com/barsv/85c93b599a763206f47aec150fb41ca0

Usage:

. .\logger.ps1
Write-Log "debug message"
Write-Log "info message" "INFO"

回答4:

Using this Log-Entry framework:

Script:

Function Main {
    Log -File "D:\Apps\Logs\$Env:computername.log"

    $tcp = (get-childitem c:\windows\system32\drivers\tcpip.sys).Versioninfo.ProductVersionRaw
    $dfs = (get-childitem C:\Windows\Microsoft.NET\Framework\v2.0.50727\dfsvc.exe).Versioninfo.ProductVersionRaw

    Log "TCPIP.sys Version on $computer is:" $tcp
    Log "DFSVC.exe Version on $computer is:" $dfs

    If (get-wmiobject win32_share | where-object {$_.Name -eq "REMINST"}) {Log "The REMINST share exists on $computer"}
    Else {Log "The REMINST share DOES NOT exist on $computer - Please create as per standards"}

    "KB2450944", "KB3150513", "KB3176935" | ForEach {
        $hotfix = Get-HotFix -Id $_ -ErrorAction SilentlyContinue
        If ($hotfix) {Log -Color Green Hotfix $_ is installed}
        Else {Log -Color Red Hotfix $_ " is NOT installed - Please ensure you install this hotfix"}
    }
}

Screen output:

Log File (at D:\Apps\Logs\<computername>.log):

2017-05-31  Write-Log (version: 01.00.02, PowerShell version: 5.1.14393.1198)
19:19:29.00 C:\Users\User\PowerShell\Write-Log\Check.ps1 
19:19:29.47 TCPIP.sys Version on  is: {Major: 10, Minor: 0, Build: 14393, Revision: 1066, MajorRevision: 0, MinorRevision: 1066}
19:19:29.50 DFSVC.exe Version on  is: {Major: 2, Minor: 0, Build: 50727, Revision: 8745, MajorRevision: 0, MinorRevision: 8745}
19:19:29.60 The REMINST share DOES NOT exist on  - Please create as per standards
Error at 25,13: Cannot find the requested hotfix on the 'localhost' computer. Verify the input and run the command again.
19:19:33.41 Hotfix KB2450944 is NOT installed - Please ensure you install this hotfix
19:19:37.03 Hotfix KB3150513 is installed
19:19:40.77 Hotfix KB3176935 is installed
19:19:40.77 End