BasePermissions of Permissions Level for using in PowerShell

List Permissions
ManageLists	Manage Lists – Create and delete lists, add or remove columns in a list, and add or remove public views of a list.
BreakCheckout	Override List Behaviors – Discard or check in a document which is checked out to another user, and change or override settings which allow users to read/edit only their own items
AddListItems	Add Items – Add items to lists and add documents to document libraries.
EditListItems	Edit Items – Edit items in lists, edit documents in document libraries, and customize Web Part Pages in document libraries.
DeleteListItems	Delete Items – Delete items from a list and documents from a document library.
ViewListItems	ViewListItems View Items – View items in lists and documents in document libraries.
ApproveItems	Approve Items – Approve a minor version of a list item or document.
OpenItems	Open Items – View the source of documents with server-side file handlers.
ViewVersions	View Versions – View past versions of a list item or document.
DeleteVersions	Delete Versions – Delete past versions of a list item or document.
CreateAlerts	Create Alerts – Create alerts.
ViewFormPages	View Application Pages – View forms, views, and application pages. Enumerate lists.
Site Permissions
ManageRoles	Manage Permissions – Create and change permission levels on the Web site and assign permissions to users and groups.
ViewUsageData	View Web Analytics Data – View reports on Web site usage.
ManageSubwebs	Create Subsites – Create subsites such as team sites, Meeting Workspace sites, and Document Workspace sites.
ManageWeb	Manage Web Site – Grants the ability to perform all administration tasks for the Web site as well as manage content.
WriteWebPages	Add and Customize Pages – Add, change, or delete HTML pages or Web Part Pages, and edit the Web site using a Microsoft SharePoint Foundation-compatible editor.
ThemeWeb	Apply Themes and Borders – Apply a theme or borders to the entire Web site.
LinkStyleSheet	Apply Style Sheets – Apply a style sheet (.CSS file) to the Web site.
CreatePersonalGroups	Create Groups – Create a group of users that can be used anywhere within the site collection.
BrowseDirectories	Browse Directories – Enumerate files and folders in a Web site using SharePoint Designer and Web DAV interfaces.
CreateSSCSite	Use Self-Service Site Creation – Create a Web site using Self-Service Site Creation.
ViewPages	View Pages – View pages in a Web site.
EnumeratePermissions	Enumerate Permissions – Enumerate permissions on the Web site, list, folder, document, or list item.
BrowseUserInfo	Browse User Information – View information about users of the Web site.
ManageAlerts	Manage Alerts – Manage alerts for all users of the Web site.
UseRemoteAPIs	Use Remote Interfaces – Use SOAP, Web DAV, the Client Object Model or SharePoint Designer interfaces to access the Web site.
UseClientIntegration	Use Client Integration Features – Use features which launch client applications. Without this permission, users will have to work on documents locally and upload their changes.
Open	Open – Allows users to open a Web site, list, or folder in order to access items inside that container.
EditMyUserInfo	Edit Personal User Information – Allows a user to change his or her own user information, such as adding a picture.
Personal Permissions
ManagePersonalViews	Manage Personal Views – Create, change, and delete personal views of lists.
AddDelPrivateWebParts	Add/Remove Personal Web Parts – Add or remove personal Web Parts on a Web Part Page.
UpdatePersonalWebParts	Update Personal Web Parts – Update Web Parts to display personalized information.

Update Projects Sites’ Write Security Option Through PowerShell

Following will iterate over all the sites within the specified site collection and updates specified lists’ write security.

#Change these variables to your site URL and list name

$site = Get-SPSite http://dhldepmweb01/PWA

$listName1 = "Assumptions and Constraints"

$listName2 = "Risks"

$listName3 = "Issues"

$listName4 = "Projects Dependent On This Project"

$listName5 = "Projects On Which This Project Depends"

#Walk through each site in the site collection

$site | Get-SPWeb -limit all| ForEach-Object {

write-output("")

#$_.Title

if(!($_.Title.ToLower().Contains("template") -or $_.URL.ToLower().Contains("template")) -And !($_.Title.ToLower().Contains("Business Intelligence Center") -or $_.URL.ToLower().Contains("Business Intelligence Center")))

{

write-output("Checking site:"+$_.Title + " URL: "+$_.URL)

#Get the list in this site

$list1 = $_.Lists[$listName1]

$list2 = $_.Lists[$listName2]

$list3 = $_.Lists[$listName3]

$list4 = $_.Lists[$listName4]

$list5 = $_.Lists[$listName5]

if($list1.WriteSecurity -eq 1 -Or $list2.WriteSecurity -eq 1 -Or $list3.WriteSecurity -eq 1 -Or $list4.WriteSecurity -eq 1)

{

#$_.URL

#Either of the following would work

write-output($list1.Title+": "+ $list1.WriteSecurity)

$list2.Title+": "+ $list2.WriteSecurity

$list3.Title+": "+ $list3.WriteSecurity

$list4.Title+": "+ $list4.WriteSecurity

$list5.Title+": "+ $list5.WriteSecurity

#write-output("about to update")

#Make the list changes

$list1.WriteSecurity = 2

$list2.WriteSecurity = 2

$list3.WriteSecurity = 2

$list4.WriteSecurity = 2

$list5.WriteSecurity = 2

#Update the list

$list1.Update()

$list2.Update()

$list3.Update()

$list4.Update()

$list5.Update()

#write-output("Site updated")

write-output("Site Updated")

}

Else

{

#write-output("Site already updated")

}

}

Else

{

write-output("Template or Explicitly defined Site not updated: "+$_.Title +" URL:"+$_.URL)

}

}

#Dispose of the site object

$site.Dispose()

Deleting List Items Through PowerShell Filtered Using CAML Query

Use the following to delete items older than the specified date in CAML below and limiting to 500 all together.

$site = new-object Microsoft.SharePoint.SPSite("<a href="http://dhldepmweb01/PWA">http://dhldepmweb01/PWA</a>")

$web = $site.rootweb

$list = $web.Lists["Project Server Workflow Tasks"]

$caml='<Where>

<Leq>

<FieldRef Name="Created" />

<Value IncludeTimeValue="TRUE" Type="DateTime">2015-12-31T02:32:20Z</Value>

</Leq>

</Where>'

$query=new-object Microsoft.SharePoint.SPQuery

$query.Query=$caml | Write-Output

$items=$list.GetItems($query)

$listItemsTotal = $items.Count;

$count=0

#Limiting the deletion till 500 count

for($x=$listItemsTotal-1;$x -ge 0 -And $count -le 500; $x--)

{

$items[$x].Delete()

$count++

}

$web.Dispose()

$site.Dispose()