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ABOUT PATH SYNTAX
SHORT DESCRIPTION
Describes the full and relative path name formats in PowerShell.
LONG DESCRIPTION
All items in a data store accessible through a PowerShell provider can be
uniquely identified by their path names. A path name is a combination of
the item name, the container and subcontainers in which the item is
located, and the PowerShell drive through which the containers are
accessed.
In PowerShell, path names are divided into one of two types: fully
qualified and relative. A fully qualified path name consists of all
elements that make up a path. The following syntax shows the elements in a
fully qualified path name:
[<provider>::]<drive>:[\<container>[\<subcontainer>...]]\<item>
The <provider> placeholder refers to the PowerShell provider through which
you access the data store. For example, the FileSystem provider allows you
to access the files and directories on your computer. This element of the
syntax is optional and is never needed because the drive names are unique
across all providers.
The <drive> placeholder refers to the PowerShell drive that is supported by
a particular PowerShell provider. In the case of the FileSystem provider,
the PowerShell drives map to the Windows drives that are configured on your
system. For example, if your system includes an A: drive and a C: drive,
the FileSystem provider creates the same drives in PowerShell.
After you have specified the drive, you must specify any containers and
subcontainers that contain the item. The containers must be specified in
the hierarchical order in which they exist in the data store. In other
words, you must start with the parent container, then the child container
in that parent container, and so on. In addition, each container must be
preceded by a backslash. (Note that PowerShell allows you to use forward
slashes for compatibility with other PowerShells.)
After the container and subcontainers have been specified, you must provide
the item name, preceded by a backslash. For example, the fully qualified
path name for the Shell.dll file in the C:\Windows\System32 directory is as
follows:
C:\Windows\System32\Shell.dll
In this case, the drive through which the containers are accessed is the C:
drive, the top-level container is Windows, the subcontainer is System32
(located within the Windows container), and the item is Shell.dll.
In some situations, you do not need to specify a fully qualified path name
and can instead use a relative path name. A relative path name is based on
the current working location. PowerShell allows you to identify an item
based on its location relative to the current working location. You can
specify relative path names by using special characters. The following
table describes each of these characters and provides examples of relative
path names and fully qualified path names. The examples in the table are
based on the current working directory being set to C:\Windows.
Symbol Description Relative path Full path
-------- ---------------------------- ------------------ -------------------
. Current location .\System c:\Windows\System
.. Parent of current location ..\Program Files c:\Program Files
\ Drive root of current \Program Files c:\Program Files
location
[none] No special characters System c:\Windows\System
When using a path name in a command, you enter that name in the same way
whether you use a fully qualified path name or a relative one. For example,
suppose that your current working directory is C:\Windows. The following
Get-ChildItem command retrieves all items in the C:\Techdocs directory:
Get-ChildItem \techdocs
The backslash indicates that the drive root of the current working location
should be used. Because the working directory is C:\Windows, the drive root
is the C: drive. Because the techdocs directory is located off the root,
you need to specify only the backslash.
You can achieve the same results by using the following command:
Get-ChildItem c:\techdocs
Regardless of whether you use a fully qualified path name or a relative
path name, a path name is important not only because it locates an item but
also because it uniquely identifies the item even if that item shares the
same name as another item in a different container.
For instance, suppose that you have two files that are each named
Results.txt. The first file is in a directory named C:\Techdocs\Jan, and
the second file is in a directory named C:\Techdocs\Feb. The path name for
the first file (C:\Techdocs\Jan\Results.txt) and the path name for the
second file (C:\Techdocs\Feb\Results.txt) allow you to clearly distinguish
between the two files.
SEE ALSO
about_Locations