{"id":75571,"date":"2015-12-21T11:59:00","date_gmt":"2015-12-21T11:59:00","guid":{"rendered":"https:\/\/blogs.technet.microsoft.com\/heyscriptingguy\/2015\/12\/21\/powertip-eliminate-duplicates-in-powershell-history\/"},"modified":"2019-02-18T09:20:35","modified_gmt":"2019-02-18T16:20:35","slug":"powertip-eliminate-duplicates-in-powershell-history","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/scripting\/powertip-eliminate-duplicates-in-powershell-history\/","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:$True<\/p>\n<p style=\"margin-left:30px\"><img decoding=\"async\" src=\"https:\/\/devblogs.microsoft.com\/scripting\/wp-content\/uploads\/sites\/29\/2018\/09\/dr_scripto-102x150.gif\" alt=\" \"><\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Summary: Use an option in the PSReadLine module to control Windows PowerShell 5.0 history duplication. &nbsp;How can I make sure that there are no duplicates in my history? &nbsp;In Windows PowerShell 5.0 with the PSReadLineModule loaded, use the&nbsp;Set-PSReadLineOption&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;cmdlet as follows: Set-PSReadLineOption &ndash;HistoryNoDuplicates:$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":[56,356,154,45],"class_list":["post-75571","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-scripting","tag-guest-blogger","tag-powertip","tag-sean-kearney","tag-windows-powershell"],"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\/75571","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=75571"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/posts\/75571\/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=75571"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/categories?post=75571"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/tags?post=75571"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}