ex2010 list calendars for user

using exchange 2010, what is an easy way to list what calendar's one user has access to?  is there a powershell command?
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jkimzlgAsked:
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Simon Butler (Sembee)ConsultantCommented:
Short answer is no, there isn't an easy way to get that information.
Folder level permissions are stored in the mailbox of the owner, not the person with permission.
Therefore to find who has access to what, you would have to query every mailbox, get their list of permissions, then do some kind of search. Depending on how many mailboxes you have it would take some time to do.

Simon.
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Jian An LimSolutions ArchitectCommented:
There is no easy way but you can use powershell script to find it out.

$mailboxes = Get-Mailbox -resultsize unlimited

 ForEach-Object ($mailbox in $mailboxes) {

get-mailbox $mailbox | % {get-mailboxfolderpermission $_":\Calendar"}\  | ?
{$_.user -like "<User>"}

}

############

p/s: sorry, i don't have a working environment to test it so, if there is issues (assume it is hand coded so synxtax issue will be unavoidable) please let me know.
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