Export unique event log in text file using Microsoft.PowerShell

Example 1: Get event logs on the local computer

In the below give below result

• Get the ten most recent entries from a specific event log on the local computer, This command gets the ten most recent entries from the Application event log.
• Get error, warning events from a specific event log. E.g. "Error"
• Get all errors in an event log that occurred during a specific time frame
• Get the unique entries from a specific event log on the local computer.
• Get the MachineName, Source, EntryType, Message properties from entries from a specific event log on the local computer.
• Export the EventLog in text file to specific server location.

Script

$AfterDate = (Get-Date -Date '26/8/2017');
$Message = Get-EventLog  -LogName "Application" -EntryType Error, Warning -Newest 10  -Source "BizTalk Server" -After $AfterDate -ComputerName "localhost" 
$Message = $Message | Format-List -Property MachineName, Source, EntryType, Message 
$Message = $Message | select -uniq;
$Message >> \\ServerName\c$\Users\harshal.chaudhari\SystemErrors.txt

Result

MachineName : ServerName
Source      : BizTalk Server
EntryType   : Warning
Message     : An error occurred that requires the BizTalk service to terminate. The most common causes are the 
              following:
               1) An unexpected out of memory error.
               OR
               2) An inability to connect or a loss of connectivity to one of the BizTalk databases. 
               The service will shutdown and auto-restart in 1 minute. If the problematic database remains 
              unavailable, this cycle will repeat.

Rerefence

• Get-EventLog