powershell - get-wmiobject to pull logs using Win32_NTLogEvent -

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i have use get-wmiobject pull logs off of remote server. winevent doesn't work 2003 servers , i'm getting blocked using eventlog. when run following command in powershell works fine, when send output file different results , i'm not sure why?

get-wmiobject -computername $server -query "select * win32_ntlogevent (logfile='system') , (eventcode='19') , (timewritten>'$begindate')")

the output in powershell:

category         : 8 categorystring   : installation eventcode        : 19 eventidentifier  : 19 typeevent        : insertionstrings : {update microsoft .net framework 2.0 sp2 on windows server 2003 , windows xp x86 (kb2836941)} logfile          : system message          : installation successful: windows installed following update: update microsoft .                    net framework 2.0 sp2 on windows server 2003 , windows xp x86 (kb2836941)

the output of same command made variable , moved ($x > file.txt) different.

servername\root\cimv2:win32_ntlogevent.logfile="system",recordnumber=89477

any ideas?

edit**

foreach($server in $servers) {  $day = (get-date -uformat %d)  $hour = (get-date -uformat %m)  if ( $hour -lt "30") {   $begindate=[system.management.managementdatetimeconverter]::todmtfdatetime((get-date).adddays(-30))   $log = (get-wmiobject -computername $server -query "select * win32_ntlogevent (logfile='system') , (eventcode='19') , (timewritten>'$begindate')")  }  $fulllog += $server + '= [{          "logfile":"' + $log + '"         }]' + "`r`n" } clear-content updatelog.js $fulllog > updatelog.js

so answer variable contained log information couldn't combined other strings in variable.

$fulllog += $server + $log (would not work) $fulllog += $log (would work)

solution? broke information:

foreach($server in $servers) {  $begindate=[system.management.managementdatetimeconverter]::todmtfdatetime((get-date).adddays(-30))  $mylog = get-wmiobject win32_ntlogevent -filter "(logfile='system') , (eventcode='19') , (timewritten>'$begindate')" -computername $server  $first = $server + '= [{          "successupdate":"'  $last = '"}]'         $first >> updatelog.js  $mylog >> updatelog.js  $last >> updatelog.js  write-host $server "logs uploaded." }

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