What does the 'Get-Help' command provide in PowerShell?

The 'Get-Help' command in PowerShell is an essential tool designed to assist users in understanding how to use various cmdlets effectively. When executed, it provides comprehensive information, including syntax, parameters, and, most importantly, examples of cmdlet usage. This is valuable for both novice and experienced users as it helps clarify how to employ specific commands in different scenarios, bolstering the user's ability to script and automate tasks within PowerShell confidently. The emphasis on providing examples allows users to see practical applications, making it easier to learn and implement commands successfully.

The other options reference aspects that are not provided by the 'Get-Help' command. For instance, performance statistics or a breakdown of system resources are typically gathered using other cmdlets like 'Get-Process' or 'Get-PerformanceCounter.' Also, updates to the PowerShell environment would generally involve installation or configuration tasks rather than information that would be fetched through 'Get-Help.'