PowerShell Builtin Help
help help → display how to use help, and topics.
Here's common help syntax:
help dir→ show doc for “dir”
help *r→ show all commands ending in “r”
Press Tab Key for Name Completion
Press Tab key for name completion.
Press Tab again to see next choice.
Name completion work on options too. For example, type
help dir -e then Tab.
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