Description

newgrp changes the primary group for a command.

If the - flag is given as first argument, the user's environment will be reinitialized as though the user had logged in, otherwise the current environment, including current working directory, remains unchanged.

newgrp changes the current primary group to the named group, or to the default group listed in /etc/passwd if no group name is given.

By default, the user's standard shell is started, called as login shell if the - flag has been specified. If a group has been given as argument, a command and its arguments can be specified on the command line.

Please note that setting the primary group to any arbitrary group is no privileged operation on Windows. However, even if this group is not in your current user token, or if the group is in your user token but marked as deny-only, no additional permissions can be obtained by setting this group as primary group.

See also

id(1), login(1).