How to disable telnet server in linux

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This is a small script to disable telnet server on centos linux. it will work on other redhat distros also.

if [ -e /etc/xinetd.d/telnet ]
then
sed -i 's/disable.*/disable = yes/' /etc/xinetd.d/telnet
service xinetd restart
fi

copy and run this in terminal. Thats it. Have fun.