{"id":86034,"date":"2015-12-21T07:30:38","date_gmt":"2015-12-21T15:30:38","guid":{"rendered":"http:\/\/devblogs.microsoft.com\/scripting\/?p=86034"},"modified":"2019-06-12T07:46:16","modified_gmt":"2019-06-12T15:46:16","slug":"powertip-eliminate-duplicates-in-powershell-history-2","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/scripting\/powertip-eliminate-duplicates-in-powershell-history-2\/","title":{"rendered":"PowerTip: Eliminate Duplicates in PowerShell History"},"content":{"rendered":"<p><b>Summary<\/b>: Use an option in the PSReadLine module to control Windows PowerShell 5.0 history duplication.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/devblogs.microsoft.com\/wp-content\/uploads\/sites\/29\/2019\/02\/q-for-powertip.jpg\" alt=\"Hey, Scripting Guy! Question\" \/>&nbsp;How can I make sure that there are no duplicates in my history?<\/p>\n<p style=\"margin-left:30px;\"><img decoding=\"async\" src=\"https:\/\/devblogs.microsoft.com\/wp-content\/uploads\/sites\/29\/2019\/02\/a-for-powertip.jpg\" alt=\"Hey, Scripting Guy! Answer\" \/>&nbsp;In Windows PowerShell 5.0 with the PSReadLineModule loaded, use the&nbsp;<b>Set-PSReadLineOption<\/b>&nbsp;<br \/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;cmdlet as follows:<\/p>\n<p style=\"margin-left:90px;\">Set-PSReadLineOption &ndash;HistoryNoDuplicates:$True<\/p>\n<p style=\"margin-left:30px;\"><img decoding=\"async\" src=\"https:\/\/msdnshared.blob.core.windows.net\/media\/TNBlogsFS\/prod.evol.blogs.technet.com\/CommunityServer.Blogs.Components.WeblogFiles\/00\/00\/00\/76\/18\/7610.Dr.ScriptoForTips.jpg\" original-url=\"http:\/\/blogs.technet.comhttps:\/\/devblogs.microsoft.com\/scripting\/wp-content\/uploads\/sites\/29\/2018\/09\/dr_scripto-102x150.gif\" alt=\" \" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Summary: Use an option in the PSReadLine module to control Windows PowerShell 5.0 history duplication. &nbsp;How can I make sure that there are no duplicates in my history? &nbsp;In Windows PowerShell 5.0 with the PSReadLineModule loaded, use the&nbsp;Set-PSReadLineOption&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;cmdlet as follows: Set-PSReadLineOption &ndash;HistoryNoDuplicates:$True<\/p>\n","protected":false},"author":596,"featured_media":87096,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-86034","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-scripting"],"acf":[],"blog_post_summary":"<p>Summary: Use an option in the PSReadLine module to control Windows PowerShell 5.0 history duplication. &nbsp;How can I make sure that there are no duplicates in my history? &nbsp;In Windows PowerShell 5.0 with the PSReadLineModule loaded, use the&nbsp;Set-PSReadLineOption&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;cmdlet as follows: Set-PSReadLineOption &ndash;HistoryNoDuplicates:$True<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/posts\/86034","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/users\/596"}],"replies":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/comments?post=86034"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/posts\/86034\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/media\/87096"}],"wp:attachment":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/media?parent=86034"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/categories?post=86034"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/tags?post=86034"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}