Clear-History

Delete entries from the command history (the commands entered during the current session). Without parameters, Clear-History will delete all commands from the session history.

Syntax
      Clear-History [[-Id] Int32[]] [[-Count] int] [-Newest]
         [-Confirm] [-WhatIf]  [CommonParameters]

      Clear-History [[-Count] int] [-CommandLine string[]] [-Newest]
         [-Confirm] [-WhatIf]  [CommonParameters]

Key:
   -CommandLine string[]
       Delete commands matching string. If you enter more than one string, 
       Clear-History will delete commands matching any of the strings.
        
   -Count int
       Clear int number of  history entries, beginning with the oldest entry
       in the history.
       If -Id Int32 is given in the same command, Clear-History will begin at Int32.

   -Id Int32[]
       Delete commands with the specified history ID(s).
       To find the history ID of a command, use Get-History.
        
   -Newest
       Delete the newest entries in the history.
       By default, Clear-History will delete the oldest entries in history.

   -confirm
       Prompt for confirmation before executing the command.

   -whatIf
       Describe the command without actually executing it.

   CommonParameters:
       -Verbose, -Debug, -ErrorAction, -ErrorVariable, -WarningAction, -WarningVariable,
       -OutBuffer -OutVariable.

Standard Aliases for Clear-History: clhy

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.

Examples

Delete all commands from the session history:

C:\PS> clear-history

Delete the last 10 commands from history:

C:\PS> clear-history -count 10 -newest

Delete commands with history IDs 10 and 64:

C:\PS> clear-history -id 10, 64

Delete commands that include "DEL" or end in "SS64"

C:\PS> clear-history -command *DEL*, *SS64

Delete 40 items from history, from id=50 to id=11 inclusive, keeping the most recent 10:

C:\PS> clear-history -id 50 -count 40

“Throughout our history, Microsoft has won by making big, bold bets. I believe that now is not the time to scale back the scope of our ambition or the scale of our investment” ~ Steve Ballmer

Related PowerShell Cmdlets:

Add-History - Add entries to the session history.
Get-History - Get a listing of the session history.