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Get-ADComputer

Tue Jan 29, 2019 9:19 pm

NAME Get-ADComputer



SYNOPSIS

Gets one or more Active Directory computers.





SYNTAX

Get-ADComputer [-AuthType {Negotiate | Basic}] [-Credential <PSCredential>] [-Properties <String[]>]

[-ResultPageSize <Int32>] [-ResultSetSize <Int32>] [-SearchBase <String>] [-SearchScope {Base | OneLevel |

Subtree}] [-Server <String>] -Filter <String> [<CommonParameters>]



Get-ADComputer [-Identity] <ADComputer> [-AuthType {Negotiate | Basic}] [-Credential <PSCredential>] [-Partition

<String>] [-Properties <String[]>] [-Server <String>] [<CommonParameters>]



Get-ADComputer [-AuthType {Negotiate | Basic}] [-Credential <PSCredential>] [-Properties <String[]>]

[-ResultPageSize <Int32>] [-ResultSetSize <Int32>] [-SearchBase <String>] [-SearchScope {Base | OneLevel |

Subtree}] [-Server <String>] -LDAPFilter <String> [<CommonParameters>]





DESCRIPTION

The Get-ADComputer cmdlet gets a computer or performs a search to retrieve multiple computers.



The Identity parameter specifies the Active Directory computer to retrieve. You can identify a computer by its

distinguished name (DN), GUID, security identifier (SID) or Security Accounts Manager (SAM) account name. You can

also set the parameter to a computer object variable, such as $<localComputerObject> or pass a computer object

through the pipeline to the Identity parameter.



To search for and retrieve more than one computer, use the Filter or LDAPFilter parameters. The Filter parameter

uses the PowerShell Expression Language to write query strings for Active Directory. PowerShell Expression

Language syntax provides rich type conversion support for value types received by the Filter parameter. For more

information about the Filter parameter syntax, see about_ActiveDirectory_Filter. If you have existing LDAP query

strings, you can use the LDAPFilter parameter.



This cmdlet retrieves a default set of computer object properties. To retrieve additional properties use the

Properties parameter. For more information about the how to determine the properties for computer objects, see the

Properties parameter description.





PARAMETERS

-AuthType <ADAuthType>

Specifies the authentication method to use. Possible values for this parameter include:



Negotiate or 0



Basic or 1



The default authentication method is Negotiate.



A Secure Sockets Layer (SSL) connection is required for the Basic authentication method.



The following example shows how to set this parameter to Basic.



-AuthType Basic



Required? false

Position? named

Default value Microsoft.ActiveDirectory.Management.AuthType.Negotiate

Accept pipeline input? false

Accept wildcard characters? false



-Credential <PSCredential>

Specifies the user account credentials to use to perform this task. The default credentials are the

credentials of the currently logged on user unless the cmdlet is run from an Active Directory PowerShell

provider drive. If the cmdlet is run from such a provider drive, the account associated with the drive is the

default.



To specify this parameter, you can type a user name, such as "User1" or "Domain01\\User01" or you can specify a

PSCredential object. If you specify a user name for this parameter, the cmdlet prompts for a password.



You can also create a PSCredential object by using a script or by using the Get-Credential cmdlet. You can

then set the Credential parameter to the PSCredential object The following example shows how to create

credentials.



$AdminCredentials = Get-Credential "Domain01\\User01"



The following shows how to set the Credential parameter to these credentials.



-Credential $AdminCredentials



If the acting credentials do not have directory-level permission to perform the task, Active Directory

PowerShell returns a terminating error.



Required? false

Position? named

Default value

Accept pipeline input? false

Accept wildcard characters? false



-Filter <String>

Specifies a query string that retrieves Active Directory objects. This string uses the PowerShell Expression

Language syntax. The PowerShell Expression Language syntax provides rich type-conversion support for value

types received by the Filter parameter. The syntax uses an in-order representation, which means that the

operator is placed between the operand and the value. For more information about the Filter parameter, see

about_ActiveDirectory_Filter.



Syntax:



The following syntax uses Backus-Naur form to show how to use the PowerShell Expression Language for this

parameter.



<filter> ::= "{" <FilterComponentList> "}"



<FilterComponentList> ::= <FilterComponent> | <FilterComponent> <JoinOperator> <FilterComponent> |

<NotOperator> <FilterComponent>



<FilterComponent> ::= <attr> <FilterOperator> <value> | "(" <FilterComponent> ")"



<FilterOperator> ::= "-eq" | "-le" | "-ge" | "-ne" | "-lt" | "-gt"| "-approx" | "-bor" | "-band" |

"-recursivematch" | "-like" | "-notlike"



<JoinOperator> ::= "-and" | "-or"



<NotOperator> ::= "-not"



<attr> ::= <PropertyName> | <LDAPDisplayName of the attribute>



<value>::= <compare this value with an <attr> by using the specified <FilterOperator>>



For a list of supported types for <value>, see about_ActiveDirectory_ObjectModel.



Examples:



The following examples show how to use this syntax with Active Directory cmdlets.



To get all objects of the type specified by the cmdlet, use the asterisk wildcard:



All user objects:



Get-ADUser -Filter *



-or-



All computer objects:



Get-ADComputer -Filter *



To get all user objects that have an e-mail message attribute, use one of the following commands:



Get-ADUser -Filter {EmailAddress -like "*"}



Get-ADUser -Filter {mail -like "*"}



-or-



Get-ADObject -Filter {(mail -like "*") -and (ObjectClass -eq "user")}



Note: PowerShell wildcards other than "*", such as "?" are not supported by the Filter syntax.



To get all users objects that have surname of Smith and that have an e-mail attribute, use one of the

following commands:



Get-ADUser -filter {(EmailAddress -like "*") -and (Surname -eq "smith")}



-or-



Get-ADUser -filter {(mail -eq "*") -and (sn -eq "Smith")}



To get all user objects who have not logged on since January 1, 2007, use the following commands:



$logonDate = New-Object System.DateTime(2007, 1, 1)



Get-ADUser -filter { lastLogon -le $logonDate }



To get all groups that have a group category of Security and a group scope of Global, use one of the following

commands:



Get-ADGroup -filter {GroupCategory -eq "Security" -and GroupScope -eq "Global"}



-or-



Get-ADGroup -filter {GroupType -band 0x80000000}



Note: To query using LDAP query strings, use the LDAPFilter parameter.



Required? true

Position? named

Default value

Accept pipeline input? false

Accept wildcard characters? false



-Identity <ADComputer>

Specifies an Active Directory computer object by providing one of the following property values. The

identifier in parentheses is the LDAP display name for the attribute.



Distinguished Name



Example: CN=SaraDavisDesktop,CN=Europe,CN=Users,DC=corp,DC=contoso,DC=com



GUID (objectGUID)



Example: 599c3d2e-f72d-4d20-8a88-030d99495f20



Security Identifier (objectSid)



Example: S-1-5-21-3165297888-301567370-576410423-1103



Security Accounts Manager Account Name (sAMAccountName)



Example: SaraDavisDesktop



The cmdlet searches the default naming context or partition to find the object. If the identifier given is a

DN, the partition to search will be computed from that DN. If two or more objects are found, the cmdlet

returns a non-terminating error.



This parameter can also get this object through the pipeline or you can set this parameter to a computer

object instance.



This example shows how to set the parameter to a distinguished name.



-Identity "CN=saraDavisDesktop,CN=Europe,CN=Users,DC=corp,DC=contoso,DC=com"



This example shows how to set this parameter to a computer object instance named "computerInstance".



-Identity $computerInstance



Required? true

Position? 1

Default value

Accept pipeline input? True (ByValue)

Accept wildcard characters? false



-LDAPFilter <String>

Specifies an LDAP query string that is used to filter Active Directory objects. You can use this parameter to

run your existing LDAP queries. The Filter parameter syntax supports the same functionality as the LDAP

syntax. For more information, see the Filter parameter description and the about_ActiveDirectory_Filter.



The following example shows how to set this parameter to search for all objects in the organizational unit

specified by the SearchBase parameter with a name beginning with "sara".



-LDAPFilter "(name=sara*)" -SearchScope Subtree -SearchBase "DC=NA,DC=fabrikam,DC=com"



Required? true

Position? named

Default value

Accept pipeline input? false

Accept wildcard characters? false



-Partition <String>

Specifies the distinguished name of an Active Directory partition. The distinguished name must be one of the

naming contexts on the current directory server. The cmdlet searches this partition to find the object defined

by the Identity parameter.



The following two examples show how to specify a value for this parameter.



-Partition "CN=Configuration,DC=EUROPE,DC=TEST,DC=CONTOSO,DC=COM"



-Partition "CN=Schema,CN=Configuration,DC=EUROPE,DC=TEST,DC=CONTOSO,DC=COM"



In many cases, a default value will be used for the Partition parameter if no value is specified. The rules

for determining the default value are given below. Note that rules listed first are evaluated first and once

a default value can be determined, no further rules will be evaluated.



In AD DS environments, a default value for Partition will be set in the following cases: - If the Identity

parameter is set to a distinguished name, the default value of Partition is automatically generated from this

distinguished name.



- If running cmdlets from an Active Directory provider drive, the default value of Partition is automatically

generated from the current path in the drive.



- If none of the previous cases apply, the default value of Partition will be set to the default partition or

naming context of the target domain.



In AD LDS environments, a default value for Partition will be set in the following cases:



- If the Identity parameter is set to a distinguished name, the default value of Partition is automatically

generated from this distinguished name.



- If running cmdlets from an Active Directory provider drive, the default value of Partition is automatically

generated from the current path in the drive.



- If the target AD LDS instance has a default naming context, the default value of Partition will be set to

the default naming context. To specify a default naming context for an AD LDS environment, set the

msDS-defaultNamingContext property of the Active Directory directory service agent (DSA) object (nTDSDSA) for

the AD LDS instance.



- If none of the previous cases apply, the Partition parameter will not take any default value.



Required? false

Position? named

Default value

Accept pipeline input? false

Accept wildcard characters? false



-Properties <String[]>

Specifies the properties of the output object to retrieve from the server. Use this parameter to retrieve

properties that are not included in the default set.



Specify properties for this parameter as a comma-separated list of names. To display all of the attributes

that are set on the object, specify * (asterisk).



To specify an individual extended property, use the name of the property. For properties that are not default

or extended properties, you must specify the LDAP display name of the attribute.



To retrieve properties and display them for an object, you can use the Get-* cmdlet associated with the object

and pass the output to the Get-Member cmdlet. The following examples show how to retrieve properties for a

group where the Administrator's group is used as the sample group object.



Get-ADGroup -Identity Administrators | Get-Member



To retrieve and display the list of all the properties for an ADGroup object, use the following command:



Get-ADGroup -Identity Administrators -Properties *| Get-Member



The following examples show how to use the Properties parameter to retrieve individual properties as well as

the default, extended or complete set of properties.



To retrieve the extended properties "OfficePhone" and "Organization" and the default properties of an ADUser

object named "SaraDavis", use the following command:



GetADUser -Identity SaraDavis -Properties OfficePhone,Organization



To retrieve the properties with LDAP display names of "otherTelephone" and "otherMobile", in addition to the

default properties for the same user, use the following command:



GetADUser -Identity SaraDavis -Properties otherTelephone, otherMobile |Get-Member



Required? false

Position? named

Default value

Accept pipeline input? false

Accept wildcard characters? false



-ResultPageSize <Int32>

Specifies the number of objects to include in one page for an Active Directory Domain Services query.



The default is 256 objects per page.



The following example shows how to set this parameter.



-ResultPageSize 500



Required? false

Position? named

Default value 256

Accept pipeline input? false

Accept wildcard characters? false



-ResultSetSize <Int32>

Specifies the maximum number of objects to return for an Active Directory Domain Services query. If you want

to receive all of the objects, set this parameter to $null (null value). You can use Ctrl+c to stop the query

and return of objects.



The default is $null.



The following example shows how to set this parameter so that you receive all of the returned objects.



-ResultSetSize $null



Required? false

Position? named

Default value

Accept pipeline input? false

Accept wildcard characters? false



-SearchBase <String>

Specifies an Active Directory path to search under.



When you run a cmdlet from an Active Directory provider drive, the default value of this parameter is the

current path of the drive.



When you run a cmdlet outside of an Active Directory provider drive against an AD DS target, the default value

of this parameter is the default naming context of the target domain.



When you run a cmdlet outside of an Active Directory provider drive against an AD LDS target, the default

value is the default naming context of the target LDS instance if one has been specified by setting the

msDS-defaultNamingContext property of the Active Directory directory service agent (DSA) object (nTDSDSA) for

the AD LDS instance. If no default naming context has been specified for the target AD LDS instance, then

this parameter has no default value.



The following example shows how to set this parameter to search under an OU.



-SearchBase "ou=mfg,dc=noam,dc=corp,dc=contoso,dc=com"



When the value of the SearchBase parameter is set to an empty string and you are connected to a GC port, all

partitions will be searched. If the value of the SearchBase parameter is set to an empty string and you are

not connected to a GC port, an error will be thrown.



The following example shows how to set this parameter to an empty string. -SearchBase ""



Required? false

Position? named

Default value

Accept pipeline input? false

Accept wildcard characters? false



-SearchScope <ADSearchScope>

Specifies the scope of an Active Directory search. Possible values for this parameter are:



Base or 0



OneLevel or 1



Subtree or 2



A Base query searches only the current path or object. A OneLevel query searches the immediate children of

that path or object. A Subtree query searches the current path or object and all children of that path or

object.



The following example shows how to set this parameter to a subtree search.



-SearchScope Subtree



Required? false

Position? named

Default value Subtree

Accept pipeline input? false

Accept wildcard characters? false



-Server <String>

Specifies the Active Directory Domain Services instance to connect to, by providing one of the following

values for a corresponding domain name or directory server. The service may be any of the following: Active

Directory Lightweight Domain Services, Active Directory Domain Services or Active Directory Snapshot instance.



Domain name values:



Fully qualified domain name



Examples: corp.contoso.com



NetBIOS name



Example: CORP



Directory server values:



Fully qualified directory server name



Example: corp-DC12.corp.contoso.com



NetBIOS name



Example: corp-DC12



Fully qualified directory server name and port



Example: corp-DC12.corp.contoso.com:3268



The default value for the Server parameter is determined by one of the following methods in the order that

they are listed:



-By using Server value from objects passed through the pipeline.



-By using the server information associated with the Active Directory PowerShell provider drive, when running

under that drive.



-By using the domain of the computer running Windows PowerShell.



The following example shows how to specify a full qualified domain name as the parameter value.



-Server "corp.contoso.com"



Required? false

Position? named

Default value

Accept pipeline input? false

Accept wildcard characters? false



<CommonParameters>

This cmdlet supports the common parameters: Verbose, Debug,

ErrorAction, ErrorVariable, WarningAction, WarningVariable,

OutBuffer, PipelineVariable, and OutVariable. For more information, see

about_CommonParameters (http://go.microsoft.com/fwlink/?LinkID=113216).



INPUTS

None or Microsoft.ActiveDirectory.Management.ADComputer



A computer object is received by the Identity parameter.





OUTPUTS

Microsoft.ActiveDirectory.Management.ADComputer



Returns one or more computer objects.



This Get-ADComputer cmdlet returns a default set of ADComputer property values. To retrieve additional

ADComputer properties, use the Properties parameter of this cmdlet.



To view the properties for an ADComputer object, see the following examples. To run these examples, replace

<computer> with a computer identifier such as the SAM account name of your local computer.



To get a list of the default set of properties of an ADComputer object, use the following command:



Get-ADComputer <computer>| Get-Member



To get a list of all the properties of an ADComputer object, use the following command:



Get-ADComputer <computer> -Properties ALL | Get-Member





NOTES





This cmdlet does not work with AD LDS with its default schema. By default AD LDS schema does not have a

computer class, but if the schema is extended to include it, this cmdlet will work with LDS.





-------------------------- EXAMPLE 1 --------------------------



C:\\PS>Get-ADComputer "Fabrikam-SRV1" -Properties *



AccountExpirationDate :

accountExpires : 9223372036854775807

AccountLockoutTime :

AccountNotDelegated : False

AllowReversiblePasswordEncryption : False

BadLogonCount :

CannotChangePassword : False

CanonicalName : Fabrikam.com/Computers/fabrikam-srv1

Certificates : {}

CN : fabrikam-srv1

codePage : 0

countryCode : 0

Created : 3/16/2009 4:15:00 PM

createTimeStamp : 3/16/2009 4:15:00 PM

Deleted :

Description :

DisplayName :

DistinguishedName : CN=fabrikam-srv1,CN=Computers,DC=Fabrikam,

DC=com

DNSHostName :

DoesNotRequirePreAuth : False

dSCorePropagationData : {3/16/2009 4:21:51 PM, 12/31/1600 4:00:01

PM}

Enabled : True

HomedirRequired : False

HomePage :

instanceType : 0

IPv4Address :

IPv6Address :

isCriticalSystemObject : False

isDeleted :

LastBadPasswordAttempt :

LastKnownParent :

LastLogonDate :

localPolicyFlags : 0

Location : NA/HQ/Building A

LockedOut : False

ManagedBy : CN=SQL Administrator 01,OU=UserAccounts,OU

=Managed,DC=Fabrikam,DC=com

MemberOf : {}

MNSLogonAccount : False

Modified : 3/16/2009 4:23:01 PM

modifyTimeStamp : 3/16/2009 4:23:01 PM

msDS-User-Account-Control-Computed : 0

Name : fabrikam-srv1

nTSecurityDescriptor : System.DirectoryServices.ActiveDirectorySe

curity

ObjectCategory : CN=Computer,CN=Schema,CN=Configuration,DC=

Fabrikam,DC=com

ObjectClass : computer

ObjectGUID : 828306a3-8ccd-410e-9537-e6616662c0b0

objectSid : S-1-5-21-41432690-3719764436-1984117282-11

30

OperatingSystem :

OperatingSystemHotfix :

OperatingSystemServicePack :

OperatingSystemVersion :

PasswordExpired : False

PasswordLastSet :

PasswordNeverExpires : False

PasswordNotRequired : False

PrimaryGroup : CN=Domain Computers,CN=Users,DC=Fabrikam,D

C=com

primaryGroupID : 515

ProtectedFromAccidentalDeletion : False

pwdLastSet : 0

SamAccountName : fabrikam-srv1$

sAMAccountType : 805306369

sDRightsEffective : 0

ServiceAccount : {}

servicePrincipalName : {MSOLAPSVC.3/FABRIKAM-SRV1.FABRIKAM.COM:an

alyze, MSSQLSVC/FABRIKAM-SRV1.FABRIKAM.COM

:1456}

ServicePrincipalNames : {MSOLAPSVC.3/FABRIKAM-SRV1.FABRIKAM.COM:an

alyze, MSSQLSVC/FABRIKAM-SRV1.FABRIKAM.COM

:1456}

SID : S-1-5-21-41432690-3719764436-1984117282-11

30

SIDHistory : {}

TrustedForDelegation : False

TrustedToAuthForDelegation : False

UseDESKeyOnly : False

userAccountControl : 4096

userCertificate : {}

UserPrincipalName :

uSNChanged : 36024

uSNCreated : 35966

whenChanged : 3/16/2009 4:23:01 PM

whenCreated : 3/16/2009 4:15:00 PM



Description



-----------



Get a specific computer showing all the properties.

-------------------------- EXAMPLE 2 --------------------------



C:\\PS>Get-ADComputer -Filter 'Name -like "Fabrikam*"' -Properties IPv4Address | FT Name,DNSHostName,IPv4Address -A



name dnshostname ipv4address

---- ----------- -----------

FABRIKAM-SRV1 FABRIKAM-SRV1.Fabrikam.com 10.194.99.181

FABRIKAM-SRV2 FABRIKAM-SRV2.Fabrikam.com 10.194.100.37



Description



-----------



Get all the computers with a name starting by a particular string and showing the name, dns hostname and IPv4

address.

-------------------------- EXAMPLE 3 --------------------------



C:\\PS>$d = [DateTime]::Today.AddDays(-90); Get-ADComputer -Filter 'PasswordLastSet -ge $d' -Properties

PasswordLastSet | FT Name,PasswordLastSet



Name PasswordLastSet

---- ---------------

FABRIKAM-SRV4 3/12/2009 6:40:37 PM

FABRIKAM-SRV5 3/12/2009 7:05:45 PM



Description



-----------



Get all the computers that have changed their password in the last 90 days.

-------------------------- EXAMPLE 4 --------------------------



C:\\PS>Get-ADComputer -LDAPFilter "(name=*laptop*)" -SearchBase "CN=Computers,DC=Fabrikam,DC=com"



name

----

saradavi-laptop

jeffpr-laptop



Description



-----------



Get the computer accounts in the location: "CN=Computers,DC=Fabrikam,DC=com" that are listed as laptops (using an

LDAPFilter)

-------------------------- EXAMPLE 5 --------------------------



C:\\PS>Get-ADComputer -Filter *



Description



-----------



Get all computer accounts.



RELATED LINKS

Online Version: http://go.microsoft.com/fwlink/p/?linkid=291021

Add-ADComputerServiceAccount

Get-ADComputerServiceAccount

New-ADComputer

Remove-ADComputer

Remove-ADComputerServiceAccount

Set-ADComputer