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Read-Host

  • Reference
Module:
Microsoft.PowerShell.Utility

Reads a line of input from the console.

Syntax

Read-Host
    [[-Prompt] <Object>]
    [-MaskInput]
    [<CommonParameters>]
Read-Host
    [[-Prompt] <Object>]
    [-AsSecureString]
    [<CommonParameters>]

Description

The Read-Host cmdlet reads a line of input from the console (stdin). You can use it to prompt a user for input. Because you can save the input as a secure string, you can use this cmdlet to prompt users for secure data, such as passwords.

Note

Read-Host has a limit of 1022 characters it can accept as input from a user.

Examples

Example 1: Save console input to a variable

This example displays the string "Please enter your age:" as a prompt. When a value is entered and the Enter key is pressed, the value is stored in the $Age variable.

$Age = Read-Host "Please enter your age"

Example 2: Save console input as a secure string

This example displays the string "Enter a Password:" as a prompt. As a value is being entered, asterisks (*) appear on the console in place of the input. When the Enter key is pressed, the value is stored as a SecureString object in the $pwd_secure_string variable.

$pwd_secure_string = Read-Host "Enter a Password" -AsSecureString

Example 3: Mask input and as a plaintext string

This example displays the string "Enter a Password:" as a prompt. As a value is being entered, asterisks (*) appear on the console in place of the input. When the Enter key is pressed, the value is stored as a plaintext String object in the $pwd_string variable.

$pwd_string = Read-Host "Enter a Password" -MaskInput

Parameters

-AsSecureString

Indicates that the cmdlet displays asterisks (*) in place of the characters that the user types as input. When you use this parameter, the output of the Read-Host cmdlet is a SecureString object (System.Security.SecureString).

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

-MaskInput

Indicates that the cmdlet displays asterisks (*) in place of the characters that the user types as input. When you use this parameter, the output of the Read-Host cmdlet is a String object. This allows you to safely prompt for a password that is returned as plaintext instead of SecureString.

This parameter was added in PowerShell 7.1.

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

-Prompt

Specifies the text of the prompt. Type a string. If the string includes spaces, enclose it in quotation marks. PowerShell appends a colon (:) to the text that you enter.

Type:Object
Position:0
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False

Inputs

None

This cmdlet does not accept input from the PowerShell pipeline.

Outputs

System.String or System.Security.SecureString

If the AsSecureString parameter is used, Read-Host returns a SecureString. Otherwise, it returns a string.

Notes

This cmdlet only reads from the stdin stream of the host process. Usually, the stdin stream is connected to the keyboard of the host console.