The ”net localgroup“ command is used to manage local groups on a Windows computer. Here’s what it does:

1. Displays Information: When used without any parameters, it displays the name of the server and the names of local groups on the computer.

2. Adds or Modifies Local Groups:

    * To add a new local group, you can use the syntax: net localgroup <GroupName> /add [/comment:"<Text>"].

    * To delete an existing local group, use: net localgroup <GroupName> /delete.

3. Adds or Removes Users from Local Groups:

    * To add a user or global group to a local group, use: net localgroup <GroupName> /add <Name>.

    * To remove a user or group from a local group, use: net localgroup <GroupName> /delete <Name>.

4. Additional Parameters:

    * /comment:"<Text>": Adds a comment for a new or existing group (up to 256 characters).

    * /domain: Performs the operation on the primary domain controller of the current domain (otherwise, it’s performed on the local computer).

5. Examples:

    * To display all local groups: net localgroup

    * To display the specific group's user account: net localgroup <group_name>  

    * To add a local group called “Exec”: net localgroup exec /add

    * To add the “Exec” group to the domain user accounts database: net localgroup exec /add /domain

Remember that this command is useful for managing local groups and their members on a Windows system.

The command "gpupdate /force" is used to force a background update of all Group Policy settings, whether they have changed or not. This command disregards the regular refresh interval and forcefully reapplies every policy, new and old. It is especially useful when you need to ensure that all policies are applied without waiting for the normal update cycle. The command can be run both locally on a computer or remotely to initiate a forced Group Policy update.