Copying Content from a file to another when a new line is added using poweshell script

Question

I have a file named server1.txt and one more file named server1_copy.txt. In server1.txt, all logs will be added from the application. So whenever a new line is added in the server1.txt, we need to copy that and paste it in the server1_copy.txt. We can keep the code in powershell script and schedule it to run every 30 minutes to perform this action.

I dont have much experiance in Powershell script. But I gone through so many documents in online, could not find a right solution to this.

Does anyone have any idea how we can achieve this using Powershell scripts.

What kind of code do you have in your PowerShell script which would perform this action every 30 minutes? I am confused about at what stage in this process you are at the moment. — Alex_P, Oct 06 '20 at 11:29

jfrmilner · Accepted Answer · 2020-10-06T19:17:14.897

1

This will copy new lines added to server1.txt to server1_copy.txt in real time.

 Get-Content -Path 'server1.txt' -Tail 0 -Wait | ForEach-Object { Add-Content -Value $_ -Path 'server1_copy.txt' }

If you need to bring the files in sync before running the above or that real time is simply unnecessary, a file copy can be done with the Copy-Item cmdlet

Copy-Item -Path 'server1.txt' -Destination 'server1_copy.txt'

edited Oct 06 '20 at 19:17

answered Oct 06 '20 at 18:43

jfrmilner

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This will also copy already existing lines again and again. – Gerald Schneider Oct 06 '20 at 18:48
@GeraldSchneider You are wrong, it will only copy new lines. – jfrmilner Oct 06 '20 at 18:52
Only until it is started again. – Gerald Schneider Oct 06 '20 at 18:53
@GeraldSchneider You are wrong, no lines are copied at start – jfrmilner Oct 06 '20 at 18:56
In that case It misses lines that have been added between runs. One way or another, it doesn't guarantee that everything is copied. – Gerald Schneider Oct 06 '20 at 18:58

Copying Content from a file to another when a new line is added using poweshell script

1 Answers1