Many PowerShell users utilize code as shown below to determine where the running script resides:<\/p>\n
function get-scriptdirectory{
$invocation=(get-variable MyInvocation -Scope 1).Value
Split-Path $invocation.myinvocation.path
}<\/p>\n
Unfortunately, if the script runs inside a custom host, such as PrimalScript’s internal host, for a good number of debuggers and the SAPIEN PowerShell host from the PrimalForms packager, the MyInvocation variable contains an empty path member.<\/p>\n
There is no documented way to set MyInvocation from a custom host and any attempts contacting Microsoft in this matter only resulted in confirmation that any attempt to do so would be overwritten anyway.<\/p>\n
It seems unreasonable to expect the PowerShell team to change the API anytime soon. And even then, changing the current behavior might prove undesirable since it could potentially break existing scripts.<\/p>\n
That of course leaves everyone implementing a custom host with a dilemma. The SAPIEN PowerShell hosts now all contain a variable called $HostInvocation which has the same interface as MyInvocation and provides the desired information.<\/p>\n
So if you are running your script inside any SAPIEN PowerShell host you can use code like this to determine where your script is:<\/p>\n
function get-scriptdirectory{
if($hostinvocation -ne null) {
Split-Path $hostinvocation.MyCommand.path
}
else {
$invocation=(get-variable MyInvocation -Scope 1).Value
Split-Path $invocation.myinvocation.path
}
}<\/p>\n","protected":false},"excerpt":{"rendered":"
Many PowerShell users utilize code as shown below to determine where the running script resides: function get-scriptdirectory{ $invocation=(get-variable MyInvocation -Scope 1).Value Split-Path $invocation.myinvocation.path} Unfortunately, if the script runs inside a custom host, such as PrimalScript’s internal host, for a good number of debuggers and the SAPIEN PowerShell host from the PrimalForms packager, the MyInvocation variable […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[283,25],"tags":[521,522,28],"class_list":["post-1628","post","type-post","status-publish","format-standard","hentry","category-howto","category-windows-powershell","tag-hosting","tag-myinvocation","tag-powershell"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/dev.sapien.com\/blog\/wp-json\/wp\/v2\/posts\/1628","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dev.sapien.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dev.sapien.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dev.sapien.com\/blog\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/dev.sapien.com\/blog\/wp-json\/wp\/v2\/comments?post=1628"}],"version-history":[{"count":7,"href":"https:\/\/dev.sapien.com\/blog\/wp-json\/wp\/v2\/posts\/1628\/revisions"}],"predecessor-version":[{"id":1716,"href":"https:\/\/dev.sapien.com\/blog\/wp-json\/wp\/v2\/posts\/1628\/revisions\/1716"}],"wp:attachment":[{"href":"https:\/\/dev.sapien.com\/blog\/wp-json\/wp\/v2\/media?parent=1628"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dev.sapien.com\/blog\/wp-json\/wp\/v2\/categories?post=1628"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dev.sapien.com\/blog\/wp-json\/wp\/v2\/tags?post=1628"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}