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I've been messing around with BASH for a few months now, but I have come across a problem where I need to output ONLY the usernames of the super users. What command will do this? I tried searching all over Google, but found nothing.
In general, there should only be one super-user on the system, root. You can print all users who have UID =0 in /etc/passwd with:
awk -F':' '($3 == 0) {print $1}' /etc/passwd
But there is usually only one name -- root. Note, this doesn't print users who might have sudo priviliges, you'd have to look in the /etc/sudoers file for that information.
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