Question

I am wondering how I can tell powershell to wait for a certain log line before continuing with the script. I managed to use the following tell powershell what to look for,

Get-Content log.txt -Wait | select-string "keyword"

But powershell will never continue due the use of -Wait. Is there another way I can tell powershell to only wait for the line to appear once before proceeding?

Answer 1

Better way to get this to work:

while($true){
    Get-Content .\test.log -Wait | Select-String "keyword" | %{ write-host Found $_; break}
}

write-host "start script"

Might not be efficient, but you can try it this way:

while(-not (gc .\test.log | select-string "keyword" )){ sleep 1}
write-host "start script"