tagline: From openSUSE  Linux security  Root / regular Linux
user In Linux there is a “root” user (which is the
administrator) and there are regular “users” (often called
“user”). Linux users should always log in as a regular user, and
type “su -” or “sudo” to obtain root permissions only on an as-
required-basis. Keeping root permissions, or indeed logging in
as root user as a routine matter, creates a major security risk
for the beginner (if their PC is connected to the Internet). It
also creates a significant operating risk, in that it is
relatively easy for experts and newbies alike, to trash their
system when operating with root permissions. Some super user
definitions are: