Get-MyModule.ps1<\/strong><\/p>\n Function Get-MyModule The Get-MyModule<\/strong> function accepts a single string—the name of the module to check. The if<\/strong> statement is used to see if the module is currently loaded. If it is not loaded, the Get-Module<\/strong> cmdlet is used to see if the module exists on the system. If it does exist, the module is loaded. <\/p>\n If the module is already loaded in the current Windows PowerShell session, the Get-MyModule<\/strong> function returns $true<\/strong> to the calling code. Let’s dig into the function in a bit more detail to see how it works. <\/p>\n The first thing I do is use the if<\/strong> statement to see if the module is not loaded in the current session. To do this, I use the –not<\/strong> operator to see if the module is not loaded. The Get-Module<\/strong> cmdlet is used to search for the required module by name. This section of the script is shown here:<\/p>\n Function Get-MyModule To obtain a list of modules that are installed on a system, use the Get-Module<\/strong> cmdlet with the –ListAvailable<\/strong> switch. Unfortunately, there is no way to filter the results, and this necessitates piping the results to the Where-Object<\/strong> cmdlet to see if the required cmdlet is installed on the system. If the module exists on the system, the function uses the Import-Module<\/strong> cmdlet to import the module, and it returns $true<\/strong> to the calling code. This section of the script is shown here:<\/p>\n if(Get-Module -ListAvailable | The last two things to do in the function are to handle two other cases. If the module is not available, the Where-Object<\/strong> cmdlet will not find anything. This triggers the first else<\/strong> clause, where $false<\/strong> is returned to the calling code. If the module is already loaded, the second else clause returns $true<\/strong> to the script. This section of the script is shown here:<\/p>\n else { $false } #module not available A simple use of the Get-MyModule<\/strong> function is to call the function and pass the name of a module to it. This example is actually seen in the last line of the Get-MyModule.ps1 script: <\/p>\n get-mymodule -name “bitsTransfer”<\/span><\/p>\n When called in this manner, the Get-MyModule<\/strong> function will load the bitstransfer<\/strong> module if it exists on your system and if it is not already loaded. If the module is already loaded or if it is loaded by the function, $true<\/strong> is returned to the script. If the module does not exist, $false<\/strong> is returned. The use of the Get-MyModule<\/strong> function is shown in the following image.<\/p>\n <\/a><\/p>\n A better use of the Get-MyModule<\/strong> function is to use it as a prerequisite check for a script that uses a particular module. Your syntax might look something like this:<\/p>\n If(Get-MyModule –name “bitsTransfer”) { call your bits code here } <\/span><\/p>\n ELSE { “Bits module is not installed on this system.” ; exit }<\/span><\/p>\n I will be using my new function in the coming days when I talk about using Windows PowerShell to interact with Group Policy. <\/p>\n We invite you follow us on Twitter<\/a> or Facebook<\/a>. If you have any questions, send e-mail to us at scripter@microsoft.com<\/a>, or post your questions on the Official Scripting Guys Forum<\/a>. See you tomorrow. Until then, peace.<\/p>\n <\/p>\n <\/strong><\/p>\n Ed Wilson and Craig Liebendorfer, Scripting Guys<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":" Microsoft Scripting Guy Ed Wilson here. One of the cool things about Windows PowerShell is that if you do not like the way it does things, you can change it. If there is something that is lacking in the released product, you can often find it in a module that someone has written and […]<\/p>\n","protected":false},"author":595,"featured_media":87096,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[51,52,3,4,61,45],"class_list":["post-17791","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-scripting","tag-getting-started","tag-modules","tag-scripting-guy","tag-scripting-techniques","tag-weekend-scripter","tag-windows-powershell"],"acf":[],"blog_post_summary":" Microsoft Scripting Guy Ed Wilson here. One of the cool things about Windows PowerShell is that if you do not like the way it does things, you can change it. If there is something that is lacking in the released product, you can often find it in a module that someone has written and […]<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/posts\/17791","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\/595"}],"replies":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/comments?post=17791"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/posts\/17791\/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=17791"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/categories?post=17791"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/tags?post=17791"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
{
Param([string]$name)
if(-not(Get-Module -name $name))
{
if(Get-Module -ListAvailable |
Where-Object { $_.name -eq $name })
{
Import-Module -Name $name
$true
} #end if module available then import
else { $false } #module not available
} # end if not module
else { $true } #module already loaded
} #end function get-MyModule
get-mymodule -name “bitsTransfer”<\/span><\/p>\n
{
Param([string]$name)
if(-not(Get-Module -name $name))
{ <\/span><\/p>\n
Where-Object { $_.name -eq $name })
{
Import-Module -Name $name
$true
} #end if module available then import<\/span><\/p>\n
} # end if not module
else { $true } #module already loaded
} #end function get-MyModule<\/span><\/p>\n![\"Image](\"https:\/\/devblogs.microsoft.com\/wp-content\/uploads\/sites\/29\/2019\/02\/7838.clip_image002_6382C3CA.jpg\")
<\/p>\n