kaushal wrote: > Is there a command to add an existing user to an existing group?This > will be a supplementary group for the user.He still has his main group > unchanged.I want a command instead of manually editing the /etc/group > file. You can set the list of supplementary groups using usermod, e.g.: usermod -G group1,group2 user AFAIK, there isn't a standard command to add or remove specific groups while leaving the rest unchanged. -- Glynn Clements <glynn@xxxxxxxxxxxxxxxxxx> - : send the line "unsubscribe linux-admin" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html