Delete all entries from a specified event log on a local or remote computer.
Syntax Clear-EventLog [-LogName] string [[-ComputerName] string] [-Confirm] [-WhatIf] [CommonParameters] Key: -logName string Name of the log file from which to clear log events. -ComputerName string Clear events from a remote computer. The default is the local computer. -confirm Prompt for confirmation before executing the command. -whatIf Describe the command without actually executing it.
The ComputerName may be a NetBIOS name, an Internet Protocol (IP) address, or a fully qualified domain name. To specify the local computer, type the computer name, a dot (.), or "localhost". -ComputerName does not rely on Windows PowerShell remoting.
Clear the Application, System and PowerShell event logs:
PS C:\> Clear-eventlog -log application, system, "Windows PowerShell"
“Beware the barrenness of a busy life” ~ Socrates
Get-Eventlog - Get event log data