How do you comment out code in PowerShell?

问题:

How do you comment out code in PowerShell (1.0 or 2.0)?

回答1:

In PowerShell V1 there's only # to make the text after it a comment.

# This is a comment in Powershell

In PowerShell V2 <# #> can be used for block comments and more specifically for help comments.

#REQUIRES -Version 2.0

<#
.SYNOPSIS
    A brief description of the function or script. This keyword can be used
    only once in each topic.
.DESCRIPTION
    A detailed description of the function or script. This keyword can be
    used only once in each topic.
.NOTES
    File Name      : xxxx.ps1
    Author         : J.P. Blanc ([e-mail])
    Prerequisite   : PowerShell V2 over Vista and upper.
    Copyright 2011 - Jean Paul Blanc/Silogix
.LINK
    Script posted over:
    http://silogix.fr
.EXAMPLE
    Example 1
.EXAMPLE
    Example 2
#>
Function blabla
{}

For more explanation about .SYNOPSIS and .* see about_Comment_Based_Help.

Remark: These function comments are used by the Get-Help CmdLet and can be put before the keyword Function, or inside the {} before or after the code itself.

回答2:

You use the hash mark like this

# This is a comment in Powershell

Wikipedia has a good page for keeping track of how to do comments in several popular languages

http://en.wikipedia.org/wiki/Comparison_of_programming_languages_(syntax)#Comments

回答3:

It's the #.

See PowerShell - Special Characters And Tokens for special characters.

回答4:

Single line comments start with a hash symbol, everything to the right of the # will be ignored:

# Comment Here

In PowerShell 2.0 and above multi-line block comments can be used:

<# 
  Multi 
  Line 
#> 

You could use block comments to embed comment text within a command:

Get-Content -Path <# configuration file #> C:\config.ini

Note: Because PowerShell supports Tab Completion you need to be careful about copying and pasting Space + TAB before comments.

回答5:

Here

# Single line comment in Powershell

<# 
--------------------------------------
Multi-line comment in PowerShell V2+ 
-------------------------------------- 
#>

回答6:

Within PowerShell ISE you can hit Ctrl+J to open the Start Snipping menü and select Comment block:

回答7:

You can make:

 (Some basic code) # Use "#" after a line and use:

 <#
    for more lines
    ...
    ...
    ...
    ..
    .
 #>