Set-Content
Writes new content or replaces existing content in a file.
Syntax
Set-Content
[-Path] <string[]>
[-Value] <Object[]>
[-PassThru]
[-Filter <string>]
[-Include <string[]>]
[-Exclude <string[]>]
[-Force]
[-Credential <pscredential>]
[-WhatIf]
[-Confirm]
[-NoNewline]
[-Encoding <Encoding>]
[-AsByteStream]
[-Stream <string>]
[<CommonParameters>]Set-Content
[-Value] <Object[]>
-LiteralPath <string[]>
[-PassThru]
[-Filter <string>]
[-Include <string[]>]
[-Exclude <string[]>]
[-Force]
[-Credential <pscredential>]
[-WhatIf]
[-Confirm]
[-NoNewline]
[-Encoding <Encoding>]
[-AsByteStream]
[-Stream <string>]
[<CommonParameters>]Set-Content
[-Path] <string[]>
[-Value] <Object[]>
[-PassThru]
[-Filter <string>]
[-Include <string[]>]
[-Exclude <string[]>]
[-Force]
[-Credential <pscredential>]
[-WhatIf]
[-Confirm]
[<CommonParameters>]Set-Content
[-Value] <Object[]>
-LiteralPath <string[]>
[-PassThru]
[-Filter <string>]
[-Include <string[]>]
[-Exclude <string[]>]
[-Force]
[-Credential <pscredential>]
[-WhatIf]
[-Confirm]
[<CommonParameters>]Description
Set-Content is a string-processing cmdlet that writes new content or replaces the content in a
file. Set-Content replaces the existing content and differs from the Add-Content cmdlet that
appends content to a file. To send content to Set-Content you can use the Value parameter on
the command line or send content through the pipeline.
If you need to create files or directories for the following examples, see New-Item.
Examples
Example 1: Replace the contents of multiple files in a directory
This example replaces the content for multiple files in the current directory.
Get-ChildItem -Path .\Test*.txt
Test1.txt
Test2.txt
Test3.txt
Set-Content -Path .\Test*.txt -Value 'Hello, World'
Get-Content -Path .\Test*.txt
Hello, World
Hello, World
Hello, WorldThe Get-ChildItem cmdlet uses the Path parameter to list .txt files that begin with
Test* in the current directory. The Set-Content cmdlet uses the Path parameter to specify
the Test*.txt files. The Value parameter provides the text string Hello, World that
replaces the existing content in each file. The Get-Content cmdlet uses the Path parameter to
specify the Test*.txt files and displays each file's content in the PowerShell console.
Example 2: Create a new file and write content
This example creates a new file and writes the current date and time to the file.
Set-Content -Path .\DateTime.txt -Value (Get-Date)
Get-Content -Path .\DateTime.txt
1/30/2019 09:55:08Set-Content uses the Path and Value parameters to create a new file named DateTime.txt
in the current directory. The Value parameter uses Get-Date to get the current date and time.
Set-Content writes the DateTime object to the file as a string. The Get-Content cmdlet uses
the Path parameter to display the content of DateTime.txt in the PowerShell console.
Example 3: Replace text in a file
This command replaces all instances of word within an existing file.
Get-Content -Path .\Notice.txt
Warning
Replace Warning with a new word.
The word Warning was replaced.
(Get-Content -Path .\Notice.txt) |
ForEach-Object {$_ -Replace 'Warning', 'Caution'} |
Set-Content -Path .\Notice.txt
Get-Content -Path .\Notice.txt
Caution
Replace Caution with a new word.
The word Caution was replaced.The Get-Content cmdlet uses the Path parameter to specify the Notice.txt file in the
current directory. The Get-Content command is wrapped with parentheses so that the command
finishes before being sent down the pipeline.
The contents of the Notice.txt file are sent down the pipeline to the ForEach-Object cmdlet.
ForEach-Object uses the automatic variable $_ and replaces each occurrence of Warning with
Caution. The objects are sent down the pipeline to the Set-Content cmdlet. Set-Content uses
the Path parameter to specify the Notice.txt file and writes the updated content to the
file.
The last Get-Content cmdlet displays the updated file content in the PowerShell console.
Example 4: Use Filters with Set-Content
You can specify a filter to the Set-Content cmdlet. When using filters to qualify the Path
parameter, you need to include a trailing asterisk (*) to indicate the contents of the
path.
The following command set the content all *.txt files in the C:\Temp
directory to the Value empty.
Set-Content -Path C:\Temp\* -Filter *.txt -Value "Empty"Parameters
-AsByteStream
This is a dynamic parameter made available by the FileSystem provider. For more information, see about_FileSystem_Provider.
Specifies that the content should be written as a stream of bytes. This parameter was introduced in PowerShell 6.0.
A warning occurs when you use the AsByteStream parameter with the Encoding parameter. The AsByteStream parameter ignores any encoding and the output is written as a stream of bytes.
| Type: | SwitchParameter |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-Confirm
Prompts you for confirmation before running the cmdlet.
| Type: | SwitchParameter |
| Aliases: | cf |
| Position: | Named |
| Default value: | False |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-Credential
Note
This parameter is not supported by any providers installed with PowerShell. To impersonate another user, or elevate your credentials when running this cmdlet, use Invoke-Command.
| Type: | PSCredential |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | True |
| Accept wildcard characters: | False |
-Encoding
This is a dynamic parameter made available by the FileSystem provider. For more information, see about_FileSystem_Provider.
Specifies the type of encoding for the target file. The default value is utf8NoBOM.
Encoding is a dynamic parameter that the FileSystem provider adds to Set-Content. This parameter
works only in file system drives.
The acceptable values for this parameter are as follows:
ascii: Uses the encoding for the ASCII (7-bit) character set.ansi: Uses the encoding for the for the current culture's ANSI code page. This option was added in PowerShell 7.4.bigendianunicode: Encodes in UTF-16 format using the big-endian byte order.bigendianutf32: Encodes in UTF-32 format using the big-endian byte order.oem: Uses the default encoding for MS-DOS and console programs.unicode: Encodes in UTF-16 format using the little-endian byte order.utf7: Encodes in UTF-7 format.utf8: Encodes in UTF-8 format.utf8BOM: Encodes in UTF-8 format with Byte Order Mark (BOM)utf8NoBOM: Encodes in UTF-8 format without Byte Order Mark (BOM)utf32: Encodes in UTF-32 format.
Beginning with PowerShell 6.2, the Encoding parameter also allows numeric IDs of registered code
pages (like -Encoding 1251) or string names of registered code pages (like
-Encoding "windows-1251"). For more information, see the .NET documentation for
Encoding.CodePage.
Starting with PowerShell 7.4, you can use the Ansi value for the Encoding parameter to pass
the numeric ID for the current culture's ANSI code page without having to specify it manually.
Note
UTF-7* is no longer recommended to use. As of PowerShell 7.1, a warning is written if you
specify utf7 for the Encoding parameter.
| Type: | Encoding |
| Accepted values: | ASCII, BigEndianUnicode, BigEndianUTF32, OEM, Unicode, UTF7, UTF8, UTF8BOM, UTF8NoBOM, UTF32 |
| Position: | Named |
| Default value: | utf8NoBOM |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-Exclude
Specifies, as a string array, an item or items that this cmdlet excludes in the operation. The value
of this parameter qualifies the Path parameter. Enter a path element or pattern, such as
*.txt. Wildcard characters are permitted. The Exclude parameter is effective only when the
command includes the contents of an item, such as C:\Windows\*, where the wildcard character
specifies the contents of the C:\Windows directory.
| Type: | String[] |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | True |
-Filter
Specifies a filter to qualify the Path parameter. The FileSystem provider is the only installed PowerShell provider that supports the use of filters. You can find the syntax for the FileSystem filter language in about_Wildcards. Filters are more efficient than other parameters, because the provider applies them when the cmdlet gets the objects rather than having PowerShell filter the objects after they are retrieved.
| Type: | String |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | True |
-Force
Forces the cmdlet to set the contents of a file, even if the file is read-only. Implementation varies from provider to provider. For more information, see about_Providers. The Force parameter does not override security restrictions.
| Type: | SwitchParameter |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-Include
Specifies, as a string array, an item or items that this cmdlet includes in the operation. The value
of this parameter qualifies the Path parameter. Enter a path element or pattern, such as
"*.txt". Wildcard characters are permitted. The Include parameter is effective only when the
command includes the contents of an item, such as C:\Windows\*, where the wildcard character
specifies the contents of the C:\Windows directory.
| Type: | String[] |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | True |
-LiteralPath
Specifies a path to one or more locations. The value of LiteralPath is used exactly as it is typed. No characters are interpreted as wildcards. If the path includes escape characters, enclose it in single quotation marks. Single quotation marks tell PowerShell not to interpret any characters as escape sequences.
For more information, see about_Quoting_Rules.
| Type: | String[] |
| Aliases: | PSPath, LP |
| Position: | Named |
| Default value: | None |
| Required: | True |
| Accept pipeline input: | True |
| Accept wildcard characters: | False |
-NoNewline
This is a dynamic parameter made available by the FileSystem provider. For more information, see about_FileSystem_Provider.
The string representations of the input objects are concatenated to form the output. No spaces or newlines are inserted between the output strings. No newline is added after the last output string.
| Type: | SwitchParameter |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-PassThru
Returns an object that represents the content. By default, this cmdlet does not generate any output.
| Type: | SwitchParameter |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-Path
Specifies the path of the item that receives the content. Wildcard characters are permitted.
| Type: | String[] |
| Position: | 0 |
| Default value: | None |
| Required: | True |
| Accept pipeline input: | True |
| Accept wildcard characters: | True |
-Stream
This is a dynamic parameter made available by the FileSystem provider. This Parameter is only available on Windows. For more information, see about_FileSystem_Provider.
Specifies an alternative data stream for content. If the stream does not exist, this cmdlet creates it. Wildcard characters are not supported.
Stream is a dynamic parameter that the FileSystem provider adds to Set-Content. This
parameter works only in file system drives.
You can use the Set-Content cmdlet to create or update the content of any alternate data stream,
such as Zone.Identifier. However, we do not recommend this as a way to eliminate security checks
that block files that are downloaded from the Internet. If you verify that a downloaded file is
safe, use the Unblock-File cmdlet.
This parameter was introduced in PowerShell 3.0. As of PowerShell 7.2, Set-Content can set the
content of alternative data streams from directories as well as files.
| Type: | String |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-Value
Specifies the new content for the item.
| Type: | Object[] |
| Position: | 1 |
| Default value: | None |
| Required: | True |
| Accept pipeline input: | True |
| Accept wildcard characters: | False |
-WhatIf
Shows what would happen if the cmdlet runs. The cmdlet is not run.
| Type: | SwitchParameter |
| Aliases: | wi |
| Position: | Named |
| Default value: | False |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
Inputs
You can pipe an object that contains the new value for the item to this cmdlet.
Outputs
None
By default, this cmdlet returns no output.
When you use the PassThru parameter, this cmdlet returns a string representing the content.
Notes
Set-Contentis designed for string processing. If you pipe non-string objects toSet-Content, it converts the object to a string before writing it. To write objects to files, useOut-File.- The
Set-Contentcmdlet is designed to work with the data exposed by any provider. To list the providers available in your session, typeGet-PsProvider. For more information, see about_Providers.
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