permdns

#!/bin/bash

#######################################################################################################################################
##                                                                                                                                   ##
##                                                                                                                                   ##
## NOTE: place this file in “/etc/cron.hourly” as “permdns”, make sure that it is executable (in effect: “chmod +x permdns”).        ##
##       the reason for this simple script came to mind when some server companies overwrote my already defined and edited           ##
##       “resolv.conf”. Hence, this simple solution was born due to always having to make sure my resolv.conf values hadn't          ##
##       been overwriten with those of the server company I was renting from. This was thus the logical and most simplistic          ##
##       solution I could think of; not a final solution by any stretch of the imagination .                                         ##
##                                                                                                                                   ##
##       It has primarily been tested on Debian GNU/Linux 9 but should work fine on any GNU/Linux which has the ability to           ##
##       run crontab jobs, thus it can be added in the following manner: “* * * * *  /bin/bash /root/permdns” which will             ##
##       be installing the new crontab given in the example above.                                                                   ##
##                                                                                                                                   ##
##      This solution was originally written by me sometime early 2017, if I remember correctly.                                     ##
##															                                                                                                     ##
##      That is all.                                                                                                                 ##
##                                                                                                                                   ##
## CONTACT INFO: you can write to me via the following e-mail ― i.am@k0nsl.org. I am also on Twitter as @k0nsl,                      ##
##               which I check occasionally.                                                                                         ##
##                                                                                                                                   ##
#######################################################################################################################################


mv /etc/resolv.conf /etc/resolv.conf.bak
echo "nameserver 127.0.0.1" >> /etc/resolv.conf
echo "nameserver ::1" >> /etc/resolv.conf
echo "nameserver 91.239.100.100" >> /etc/resolv.conf
echo "nameserver 2001:67c:28a4::" >> /etc/resolv.conf