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Bash script to manage /etc/hosts file, adding/removing hostnames.
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#!/usr/bin/env bash | |
if [ "$1" != "add" ] && [ "$1" != "remove" ] || [ -z "$2" ]; then | |
[ -z "$2" ] && echo "Missing hostname" || echo "Unknown option '$1'" | |
echo "Unknown option '$1'" | |
echo "Usage:" | |
echo " $0 add <hostname>" | |
echo " $0 remove <hostname>" | |
exit 1 | |
fi | |
# Path to your hosts file | |
hostsfile=/etc/hosts | |
# Default IP for hostname | |
ip="127.0.0.1" | |
remove() { | |
hostname=$1 | |
if [ -n "$(grep $hostname $hostsfile)" ]; then | |
echo "$hostname found in your $hostsfile, removing..." | |
sudo sed -i".bak" "/$hostname/d" $hostsfile | |
if [ -n "$(grep -v $hostname $hostsfile)" ]; then | |
echo "$hostname was removed succesfully" | |
else | |
echo "Failed to remove $hostname" | |
fi | |
else | |
echo "$hostname was not found in your $hostsfile" | |
fi | |
} | |
add() { | |
hostname=$1 | |
if [ -n "$(grep $hostname $hostsfile)" ]; then | |
echo "$hostname already exists:" | |
grep $hostname $hostsfile | |
else | |
echo "Adding $hostname to your $hostsfile" | |
sudo -- sh -c -e "echo '$ip $hostname' >> $hostsfile" | |
if [ -n "$(grep $hostname $hostsfile)" ]; then | |
echo "$hostname was added succesfully" | |
grep $hostname $hostsfile | |
else | |
echo "Failed to add $hostname" | |
fi | |
fi | |
} | |
$@ |
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