Pulling out lines that contain X from a text file

This is going to be a short one, and really is more for my reference, but hopefully it helps other people.

I had a long log file, about 490MB, and I was looking for entries that had certain content. Specifically, I wanted any line that had "5156" in it.

Get-Content c:\temp\LogFile.txt | where-object {$_ -match '5156'} | set-content c:\temp\output.txt

After the line above executes, only lines that contain 5156 are copied to the output file.

I'm going to be using this a lot in the future, I think.....