The Set-ExecutionPolicy command allows you to select your preferred level of security. To prevent the execution of malicious code in the PowerShell environment, scripting is disabled by default - i.e. Scripts created remotely are allowed to run only if they are signed by trusted publishers. Remote Signed - setting the execution policy to Remote Signed allows the execution of all scripts created locally.All Signed - in this mode, only scripts signed by trusted publishers are allowed to run.Unrestricted - this removes all execution policy restrictions.You can only enter this command interactively. Restricted - this locks down PowerShell and ensures that the environment is unable to run PowerShell scripts.They are Restricted, All Signed, Remote Signed and Unrestricted. In line with security best practices, Windows has four built-in levels of access to the PowerShell environment. It’s used to get the list of all running processes on your computer. This command is similar to the Get-Service command. If you include the -Name switch as well as the name of the service as parameters to the Get-Service command, Windows will display the state of the service. This command provides you with the list of services installed on your system. For instance, “Get-Command *-service*” displays all the commands associated with -service. Admins can use this command by typing Get-Command followed by their search query. This displays the list of commands that correspond to the search parameter you entered. If you need to know how the Get-EventLog command works, all you need to do is type “Get-Help -Name Get-EventLog” and Windows displays the full command syntax. Get-Help is a simple but very useful command that enables admins to obtain helpful information about other PowerShell cmdlets, scripts, etc.
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