Create Log File in Powershell

Question

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

User · Accepted Answer

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

User · Answer

Gist with log rotation  https   gist github com barsv 85c93b599a763206f47aec150fb41ca0  Usage       logger ps1 Write-Log  debug message  Write-Log  info message   INFO

User · Answer

I ve been playing with this code for a while now and I have something that works well for me  Log files are numbered with leading  0  but retain their file extension  And I know everyone likes to make functions for everything but I started to remove functions that performed 1 simple task  Why use many word when few do trick  Will likely remove other functions and perhaps create functions out of other blocks  I keep the logger script in a central share and make a local copy if it has changed  or load it from the central location if needed   First I import the logger    Change directory to the script root cd  PSScriptRoot   Make a local copy if changed then Import logger if test-path  D  Scripts logger ps1        if  Test-Path     lt server gt  share DCS Scripts logger ps1             if  Get-FileHash     lt server gt  share DCS Scripts logger ps1   Hash -ne  Get-FileHash  D  Scripts logger ps1   Hash               rename-Item -path     logger ps1  -newname  logger  Get-Date -format  yyyyMMdd-HH mm ss   ps1  -force             Copy-Item     lt server gt  share DCS Scripts logger ps1  -destination       -Force                   else      Copy-Item     lt server gt  share DCS Scripts logger ps1  -destination       -Force         logger ps1    Define the log file    logfile    get-location  path     Log      QProfile replace             - metricEnv- ScriptName log    What I log depends on debug levels that I created   if   Debug -ge 1        message     lt  pid gt Debug  Debug -Adding tag   MetricClass temp   to  host name   metric name      Write-Log  message  logfile  DEBUG      I would probably consider myself a bit of a  hack  when it comes to coding so this might not be the prettiest but here is my version of logger ps1     all logging settins are here on top param       Parameter Mandatory  false            string  logFile      gc env computername  log        Parameter Mandatory  false            string  logLevel    DEBUG       DEBUG   INFO   WARN   ERROR   FATAL        Parameter Mandatory  false            int64  logSize   10mb       Parameter Mandatory  false            int  logCount   25      end of settings  function Write-Log-Line   line   logFile         logFile                  If  Test-Path -Path       Get-Item                  Else   New-Item -Path    -Force            Add-Content -Value  Line -erroraction SilentlyCOntinue    function Roll-logFile        function checks to see if file in question is larger than the paramater specified if it is it will roll a log and delete the oldes log if there are more than x logs      param           string  fileName    Get-Date  toString  yyyy MM dd HH mm ss     log             int64  maxSize    logSize            int  maxCount    logCount            logRollStatus    true     if test-path  filename             file   Get-ChildItem  filename           Start the log-roll if the file is big enough           Write-Log-Line   Stamp INFO Log file size is    file length   max size  maxSize   logFile          Write-Host   Stamp INFO Log file size is     0 N0   -f  file length   max size     0 N0   -f  maxSize           if  file length -ge  maxSize                Write-Log-Line   Stamp INFO Log file size     0 N0   -f  file length  is larger than max size     0 N0   -f  maxSize   Rolling log file    logFile              Write-Host   Stamp INFO Log file size     0 N0   -f  file length  is larger than max size     0 N0   -f  maxSize   Rolling log file                fileDir    file Directory              fbase    file BaseName              fext    file Extension              fn    file name  this gets the name of the file we started with              function refresh-log-files                    Get-ChildItem  filedir         Extension -match   fext  -and    name -like   fbase      Sort-Object lastwritetime                           function fileByIndex  index                     fileByIndex    files         Name  split  -   -1  trim   fext   -eq    index     tostring 00                    Write-Log-Line  LOGGER  fileByIndex    fileByIndex   logFile                  fileByIndex                           function getNumberOfFile  theFile                     NumberOfFile    theFile Name split  -   -1  trim   fext                   if   NumberOfFile -match   a-z                          NumberOfFile    01                                     Write-Log-Line  LOGGER  GetNumberOfFile    NumberOfFile   logFile                  NumberOfFile                            refresh-log-files                       int32  num   getNumberOfFile                    Write-Log-Line  LOGGER  checking log file number  num   logFile                 if   int32    num     tostring 00  -ge  maxCount                        write-host  Deleting files above log max count  maxCount                           Write-Log-Line  LOGGER  Deleting files above log max count  maxCount        logFile                     Remove-Item    fullName                                               files     refresh-log-files                 Now there should be at most  maxCount files  and the highest number is one less than count  unless there are badly named files  eg non-numbers             for   i    files count   i -gt 0   i--                     newfilename     fbase-   i     tostring 00  fext                    newfilename   getFileNameByNumber   i     tostring 00                   if  i -gt 1                         fileToMove   fileByIndex  i-1                    else                        fileToMove    file                                   if  Test-Path  fileToMove PSPath      If there are holes in sequence  file by index might not exist  The  hole  will shift to next number  as files below hole are moved to fill it                     write-host  moving   fileToMove    gt    newfilename                        Write-Log-Line  LOGGER  moving  fileToMove   gt   newfilename   logFile                        fileToMove is a System IO FileInfo  but  newfilename is a string  Move-Item takes a string  so we need full path                     Move-Item   fileToMove FullName  -Destination  fileDir  newfilename -Force                                           else                logRollStatus    false                 else            logrollStatus    false            LogRollStatus     Function Write-Log        CmdletBinding        Param       Parameter Mandatory  True        string       Message        Parameter Mandatory  False        String       logFile    log-  gc env computername  log         Parameter Mandatory  False        String       Level    INFO             Write-Host  logFile      levels     DEBUG   INFO   WARN   ERROR   FATAL        logLevelPos    array   IndexOf  levels   logLevel       levelPos    array   IndexOf  levels   Level       Stamp    Get-Date  toString  yyyy MM dd HH mm ss fff          First roll the log if needed to null to avoid output      Null              Roll-logFile -fileName  logFile -filesize  logSize -logcount  logCount            if   logLevelPos -lt 0           Write-Log-Line   Stamp ERROR Wrong logLevel configuration   logLevel    logFile            if   levelPos -lt 0           Write-Log-Line   Stamp ERROR Wrong log level parameter   Level    logFile              if level parameter is wrong or configuration is wrong I still want to see the        message in log     if   levelPos -lt  logLevelPos -and  levelPos -ge 0 -and  logLevelPos -ge 0           return             Line     Stamp  Level  Message      Write-Log-Line  Line  logFile

User · Answer

I believe this is the simplest way of putting all what it is on the screen into a file  It is a native PS CmdLet so you don t have to change anything in yout script Start-Transcript -Path Computer log  Write-Host  quot everything will end up in Computer log quot   Stop-Transcript

User · Answer

You might just want to use the new TUN Logging PowerShell module  this can also send a log mail  Just use the Start-Log and or Start-MailLog cmdlets to start logging and then just use Write-HostLog  Write-WarningLog  Write-VerboseLog  Write-ErrorLog etc  to write to console and log file mail  Then call Send-Log and or Stop-Log at the end and voila  you got your logging  Just install it from the PowerShell Gallery via  Install-Module -Name TUN Logging   Or just follow the link  https   www powershellgallery com packages TUN Logging  Documentation of the module can be found here  https   github com echalone TUN blob master PowerShell Modules TUN Logging TUN Logging md

User · Answer

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  lt computername gt  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

User · Answer

A function that takes these principles a little further    Add s timestamps - can t have a log without timestamps   Add s a level  uses INFO by default  meaning you can highlight big issues   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

User · Answer

function WriteLog       Param   string  LogString       LogFile    C    gc env computername  log       DateTime      0 MM dd yy   0 HH mm ss    -f  Get-Date       LogMessage     Datetime  LogString      Add-content  LogFile -value  LogMessage    WriteLog  This is my log message

[powershell] Create Log File in Powershell

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