Command to use commands from list

Question

Hey everybody. I new in powershell. I need to convert mailboxes to shared. The list in txt/exel. 
Set-Mailbox -Identity [email protected] -Type Shared
How can I make this command to difference mailboxes from the list?
Thnx.

Answer 1

[System.IO.File]::ReadAllText("C:\scripts\myList.txt") | %{Set-Mailbox -Identity $_ -Type Shared}
Using "ReadAllText" is faster than "Get-Content".
# The fastest Powershell 2 : Read a text file
http://powershell-guru.com/fastest-powershell-2-read-text-file
Of course it's faster.  It reads the entire file as one string, with embedded spaces.  But that's useless for this application, because you need an array of strings you can iterate through with foreach or ForEach-Object.  You'll have to turn
around and split it at the newlines before it can be used for that.
To get an array of strings (one per line) you'd want to use [System.IO.File]::ReadAllLines.
But that isn't really any faster than using Get-Content with a ReadCount of 0.
The author of that web page is doing a lot of apples-and-oranges comparisons.
[string](0..33|%{[char][int](46+("686552495351636652556262185355647068516270555358646562655775 0645570").substring(($_*2),2))})-replace " "