gpasswd:tldr:554c2

The command sudo gpasswd -M ${user1,user2} ${group} is being executed with administrative privileges (using sudo). It modifies the group membership (-M) of multiple users (${user1,user2}) and assigns them to a specific group (${group}).

Here's a breakdown of the command:

• sudo: This command allows a user with administrative (root) privileges to execute the following command.
• gpasswd: This is a command used to manage the group passwords and membership in Linux.
• -M ${user1,user2}: The -M flag specifies a comma-separated list of users that should be added to or removed from the group. In this case, ${user1,user2} represents multiple user names or variable values.
• ${group}: This is the name of the group where the specified users will be added or removed. It is a variable value or a specific group name.

By executing this command, the group membership of user1 and user2 will be modified to include them in the ${group} group specified.