New-CustomEventLog.ps1

1. <# 
2. .SYNOPSIS 
3.     Creates a new Event Log 
4. .DESCRIPTION 
5.     This script first checks to see if a log called NewPSHLog exists. if not, it creates 
6.     it then exits. if the log exists, the script writes an entry ot the log and then 
7.     displays the log entries. A separate script clears and deletes the log! 
8. .NOTES 
9.     File Name  : New-CustomEventLog.ps1 
10.     Author     : Thomas Lee - tfl@psp.co.uk 
11.     Requires   : PowerShell V2 CTP3 
12. .LINK 
13.     Script posted to:
14.     http://www.pshscripts.blogspot.com 
15. .EXAMPLE 
16.     First time the script runs: 
17.     PSH [C:\foo]: .\New-CustomEventLog.ps1' 
18.     CreatedEventSource 
19.     Exiting, execute the script a second time to use the source. 
20.      
21.     Second time the script runs: 
22.     PSH [C:\foo]: .\New-CustomEventLog.ps1' 
23.     PowerShell Eventlog exists 
24.  
25.        Index Time          EntryType   Source      InstanceID Message 
26.        ----- ----          ---------   ------      ---------- ------- 
27.           12 Feb 22 16:11  Information NewPshLog            0 Writing to new PowerShell even... 
28. #> 
29.  
30. ### 
31. # Start of Script 
32. ### 
33.  
34. if (![system.diagnostics.eventlog]::SourceExists("NewPSHLog"))  { 
35.  
36. # An event log source should not be created and immediately used. 
37. # There is a latency time to enable the source, it should be created 
38. # prior to executing the application that uses the source. 
39. # So let's execute this sample a second time to use the new source. 
40.             [system.diagnostics.EventLog]::CreateEventSource("MySource", "NewPSHLog") 
41.             "CreatedEventSource" 
42.             "Exiting, execute the script a second time to use the source." 
43. # The source is created.  Exit the application to allow it to be registered. 
44.             return 
45. } 
46. else { 
47. "NewPSHLog Eventlog exists" 
48. } 
49.  
50. # With log created, create an EventLog instance and assign its source. 
51. $mylog = new-object System.diagnostics.Eventlog 
52. $myLog.Source = "NewPshLog" 
53.  
54. # Write an informational entry to the event log.     
55. $myLog.WriteEntry("Writing to new PowerShell event log.") 
56.  
57. # Display log events 
58. get-eventlog "NewPSHLog" 
59. # End of Script 

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