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This content is part of the Essential Guide: The essential admin's guide to Office 365 PowerShell
Definition

cmdlet

A cmdlet (pronounced "command-let") is a lightweight Windows PowerShell script that performs a single function.

A command, in this context, is a specific order from a user to the computer's operating system or to an application to perform a service, such as "Show me all my files" or "Run this program for me." Although Windows PowerShell includes more than two hundred basic core cmdlets, administrators can also write their own cmdlets and share them.

A cmdlet, which is expressed as a verb-noun pair, has a .ps1 extension. Each cmdlet has a help file that can be accessed by typing Get-Help <cmdlet-Name> -Detailed.  The detailed view of the cmdlet help file includes a description of the cmdlet, the command syntax, descriptions of the parameters and an example that demonstrate the use of the cmdlet. 

Popular basic cmdlets include:

Cmdlet

Function

 Get-Location

 get the current directory

 Set-Location

 change the current directory

 Copy-Item

 copy files

 Remove-Item

 remove a file or directory

 Move-Item

 move a file

 Rename-Item 

 rename a file

 New-Item

 create a new empty file or directory

This was last updated in August 2017

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Edit that last cmdlet, net-item. Description is not part of the cmdlet.
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