Param block
A parameter block is a PowerShell construct that declares a script or function’s parameters, default values, and related metadata.
Practical Automation with PowerShell: Effective scripting from the console to the cloud
A parameter block is the section of a PowerShell function or script that declares its input parameters and their metadata.
- How it is used
- Defines the required and optional inputs that drive reusable archive and log-cleanup automations.
- How deep it goes
- Explains placement, mandatory flags, types, and defaults through complete function and script listings.
- Examples
- Demonstrates archive-path inputs, a date parameter, and a 30-day log-retention setting in a cleanup script.
- What you can do after
- Apply it via PowerShell functions and scripts to declare typed, required, and optional automation inputs.
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A param block is a PowerShell language construct that declares the parameters and default values of a script or function.
- How it is used
- Turns hardcoded script values into inputs for repeatable administrative commands.
- How deep it goes
- Explains declarations, defaults, invocation forms, types, mandatory attributes, and block punctuation through working scripts.
- Examples
- Uses Get-DiskInventory with computer-name and drive-type parameters, including mandatory prompting and typed values.
- What you can do after
- Apply it via PowerShell scripts to replace hardcoded values with named, positional, defaulted, or mandatory inputs.
Related concepts
- inputhas part · An input is a value, information, or signal supplied to a system, computation, or interface for processing or to influence its behavior.
- CmdletBinding attributehas part · The CmdletBinding attribute is a PowerShell declaration that enables cmdlet-like behavior and advanced features for a script or function.
- functionpart of · A function is a callable program unit that performs an operation, may accept inputs, and can produce a result or side effect.
- shell scriptpart of · Bash is a Unix command-line shell and scripting language for executing commands interactively and through scripts.
- script parametersconfigures · Script parameters are named values supplied separately from script source and made available to the script at execution time.
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