I am looking for Powershell cmd to print the last 5 lines of data from any file in the directory.
Ideally
Get-Content -Tail 5 -Wait .\test.log
will print tail over the specific file from last 5 lines. If any new content is being appended to that file, it will keep printing.
Similarly, I want to tail over all the files from directory. Print the contents if any file is getting modified.
Tried something like this, didn't work!
Get-Content -Tail 5 -Wait .\folder*.log
While you can use -Tail with multiple files, when using -Wait only the first file will have it changes reported. But this is possible if you use a workflow and run the command in parallel.
# Get-Tail.ps1 Workflow Get-Tail { param ( [string[]]$Path, [int]$Tail ) foreach -parallel ($File in $Path) { Get-Content -Path $File -Tail $Tail -Wait } } Then run the following:
. .\Get-Tail.ps1 $files = (dir .\folder*.log).FullName Get-Tail -Path $files -Tail 5 You could use a FileSystemWatcher object and the Register-ObjectEvent cmdlet to monitor changes made to the filesystem. Something like this :
$fw = New-Object System.IO.FileSystemWatcher $fw.Path = "C:\temp\events\test" Register-ObjectEvent -InputObject $fw -EventName Changed -SourceIdentifier File.Changed -Action { #$event write-host "file changed : $($event.SourceEventArgs.Name)" get-content $event.SourceEventArgs.fullpath -tail 5 |out-host } |out-null #unregister event when done #Unregister-Event -SourceIdentifier file.changed 