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A small shell script that will add and remove lines from the hosts file. Originally created by Claus Witt, http://clauswitt.com/319.html.
#! /bin/sh
# @author: Claus Witt
# http://clauswitt.com/319.html
# Adding or Removing Items to hosts file
# Use -h flag for help
DEFAULT_IP=127.0.0.1
IP=${3:-$DEFAULT_IP}
case "$1" in
add)
echo "$IP $2" >> /etc/hosts
;;
remove)
sed -ie "\|^$IP $2\$|d" /etc/hosts
;;
*)
echo "Usage: "
echo "hosts.sh [add|remove] [hostname] [ip]"
echo
echo "Ip defaults to 127.0.0.1"
echo "Examples:"
echo "hosts.sh add testing.com"
echo "hosts.sh remove testing.com 192.168.1.1"
exit 1
;;
esac
exit 0
@sbgarg2017

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@sbgarg2017 sbgarg2017 commented Apr 19, 2017

Do you have an example of reading from a file and updating hosts?

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