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The command "Get-Alias" in PowerShell is used to retrieve the list of defined aliases, which are essentially short names or abbreviations for longer commands or functions. These aliases simplify the use of commands by offering a more convenient and quicker way to execute them.
The pipe symbol "|" is used in PowerShell to pass the output of one command as input to another command. In this case, the output of the "Get-Alias" command is being passed to the next command.
The "Out-String" command is used to convert the output into a string format. By default, the output of "Get-Alias" is a table-like format. However, using "Out-String" converts it into a simple string format.
So, the command "Get-Alias | Out-String" retrieves the list of defined aliases in PowerShell and converts the output into a string format to make it easier to read or manipulate as needed.