refresh a user's group permissions

["Albert Meyburgh" <ameyburgh@xxxxxxxxx>]

hi

if i log in with a user,

then a root user simultaneosly adds that user to a new group

then that user does not see the group when they type "groups"

and can't execute anything owned by the new group until they log out
and back in.

is there a command the user can run to "refresh" their group permissions?

thanks
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