Windows PowerShell Persistent History -


so found excellent looking method of persisting history in windows powershell.

# persistent history # save last 200 history items on exit $maximumhistorycount = 200     $historypath = join-path (split-path $profile) history.clixml  # hook powershell's exiting event & hide registration -supportevent (from nivot.org) register-engineevent -sourceidentifier powershell.exiting -supportevent -action {     get-history -count $maximumhistorycount | export-clixml (join-path (split-path $profile) history.clixml)  }  # load previous history, if exists if ((test-path $historypath)) {     import-clixml $historypath | ? {$count++;$true} | add-history     write-host -fore green "`nloaded $count history item(s).`n" }  # aliases , functions make useful new-alias -name -value invoke-history -description "invoke history alias" rename-item alias:\h original_h -force function h { get-history -c  $maximumhistorycount } function hg($arg) { get-history -c $maximumhistorycount | out-string -stream | select-string $arg }

however when paste $profile , restart powershell following error

 register-engineevent : missing argument parameter 'action'. specify parameter of type 'system.management.automation.scriptblock' , try again. @ d:\path\to\windowspowershell\microsoft.powershell_profile.ps1:20 char:73 + register-engineevent -sourceidentifier powershell.exiting -supportevent -action +                                                                         ~~~~~~~     + categoryinfo          : invalidargument: (:) [register-engineevent], parameterbindingexception     + fullyqualifiederrorid : missingargument,microsoft.powershell.commands.registerengineeventcommand

very related question "how access history using up/down arrows?" psreadline module solves this: 

install-package psreadline

then add:

import-module psreadline

to $profile.


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