How do I uninstall or remove Webmin software under Linux / UNIX operating system?

Remove Webmin RPM (RHEL / Centos / Fedora )

If you have installed it via rpm, type the following command to remove the same:
# rpm -ev webmin

Uninstall Webmin Source Installation

Just run the command /etc/webmin/uninstall.sh if you’ve install it from source:
# /etc/webmin/uninstall.sh
Sample Output:

Are you sure you want to uninstall Webmin? (y/n) : y

Stopping Webmin server in /usr/local/webmin-1.330
/etc/webmin/stop: line 4: kill: (2359) - No such process
Running uninstall scripts ..
Deleted init script /etc/rc.d/init.d/webmin
Deleting /usr/local/webmin-1.330 ..
Deleting /etc/webmin ..
Done!

Solaris UNIX Remove Webmin Software

if you have installed the Solaris package, enter:
# pkgrm WSwebmin

Debian / Ubuntu Linux Remove Webmin Software

Use apt-get command to remove the same:
# apt-get --purge remove webmin

FreeBSD Remove Webmin Software

Type the following command to remove webmin under FreeBSD operating system:
# cd /usr/ports/sysutils/webmin
# make deinstall clean
OR use pkg_delete command:
# pkg_delete webmin

A Note About Firewall Configuration

You may need to update your pf or netfilter scripts to close port # 10000 which was opened for webmin.