Favorite Powershell Oneliners.ps1

#Tail a file
get-content -Tail 20 -Wait -path '.\log.txt'

#Tail and grep a file
Get-Content log.txt -tail 20 –wait | Select-String 'look for string'

#Grep a file
get-content -path '.\log.txt' | Select-String 'look for string'

#Move files older than 180 days
get-childitem -Path "c:\some\log\dir" | where-object {$_.LastWriteTime -lt (get-date).AddDays(-180)} | move-item -destination "c:\some\archive\dir"

#Move files before a certain date
get-childitem -Path "C:\some\log\dir" | where-object {$_.LastWriteTime -lt [datetime]"1/1/2019"} | move-item -destination "c:\some\archive\dir"