Join-Path

Module:
Microsoft.PowerShell.Management
Combines a path and a child path into a single path.

Syntax 

Join-Path
    [-Path] <String[]>
    [-ChildPath] <String>
    [[-AdditionalChildPath] <String[]>]
    [-Resolve]
    [-Credential <PSCredential>]
    [-UseTransaction]
    [<CommonParameters>]

Description

The Join-Path cmdlet combines a path and child-path into a single path. The provider supplies the path delimiters.

Examples

Example 1: Combine a path with a child path 

Join-Path -Path "C:\win*" -ChildPath "System*"

This command uses Join-Path to combine the C:\Win* path with the System* child path. The Windows PowerShell file system provider, FileSystem joins the path and adds the "\" delimiter.

Example 2: Display files and folders by joining a path with a child path 

Join-Path "C:\win*" "System*" -Resolve

This command displays the files and folders that are referenced by joining the C:\Win* path and the System* child path. It displays the same files and folders as Get-ChildItem, but it displays the fully qualified path to each item. In this command, the Path and ChildPath optional parameter names are omitted.

Example 3: Use Join-Path with the Windows PowerShell registry provider 

HKLM:\> Join-Path System *ControlSet* -Resolve

This command displays the registry keys in the HKLM\System registry subkey that include ControlSet. The command shows how to use Join-Path with the Windows PowerShell registry provider.

Example 4: Combine multiple path roots with a child path 

Join-Path -Path C:, D:, E:, F: -ChildPath New

This command uses Join-Path to combine multiple path roots with a child path.

Example 5: Combine the roots of a file system drive with a child path 

Get-PSDrive -PSProvider filesystem | ForEach {$_.root} | Join-Path -ChildPath "Subdir"

This command combines the roots of each Windows PowerShell file system drive in the console with the Subdir child path.

The command uses the Get-PSDrive cmdlet to get the Windows PowerShell drives supported by the FileSystem provider. The ForEach-Object statement selects only the Root property of the PSDriveInfo objects and combines it with the specified child path.

The output shows that the Windows PowerShell drives on the computer included a drive mapped to the C:\Program Files directory.

Required Parameters

-ChildPath

Specifies the elements to append to the value of the Path parameter. Wildcards are permitted. The ChildPath parameter is required, although the parameter name ("ChildPath") is optional.

Type: String
Position: 1
Default value: None
Accept pipeline input: True (ByPropertyName)
Accept wildcard characters: False
-Path

Specifies the main path (or paths) to which the child-path is appended. Wildcards are permitted.

The value of Path determines which provider joins the paths and adds the path delimiters. The Path parameter is required, although the parameter name ("Path") is optional.

Type: String[]
Aliases: PSPath
Position: 0
Default value: None
Accept pipeline input: True (ByPropertyName, ByValue)
Accept wildcard characters: False

Optional Parameters

-AdditionalChildPath

Specifies additional elements to append to the value of the Path parameter.

Type: String[]
Position: 2
Default value: None
Accept pipeline input: True (ByPropertyName)
Accept wildcard characters: False
-Credential

Specifies a user account that has permission to perform this action. The default is the current user.

Type a user name, such as User01 or Domain01\User01. Or, enter a PSCredential object, such as one generated by the Get-Credential cmdlet. If you type a user name, you will be prompted for a password.

This parameter is not supported by any providers installed with Windows PowerShell.

Type: PSCredential
Position: Named
Default value: None
Accept pipeline input: True (ByPropertyName)
Accept wildcard characters: False
-Resolve

Indicates that this cmdlet displays the items that are referenced by the joined path.

Type: SwitchParameter
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-UseTransaction

Includes the command in the active transaction. This parameter is valid only when a transaction is in progress. For more information, see Includes the command in the active transaction. This parameter is valid only when a transaction is in progress. For more information, see

Type: SwitchParameter
Aliases: usetx
Position: Named
Default value: False
Accept pipeline input: False
Accept wildcard characters: False

Inputs

System.String

You can pipe a string that contains a path to this cmdlet.

Outputs

System.String

This cmdlet returns a string that contains the resulting path.

Notes

  • The cmdlets that contain the Path noun (the Path cmdlets) manipulate path names and return the names in a concise format that all Windows PowerShell providers can interpret. They are designed for use in programs and scripts where you want to display all or part of a path name in a particular format. Use them like you would use Dirname, Normpath, Realpath, Join, or other path manipulators.

    You can use the path cmdlets with several providers, including the FileSystem, Registry, and Certificate providers.

    This cmdlet is designed to work with the data exposed by any provider. To list the providers available in your session, type Get-PSProvider . For more information, see about_Providers.

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