gvavagrant/scripts/add_salt_to_etc_hosts.sh

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#!/bin/sh
set -e
ip_address="172.16.4.10"
host_name="salt.gva.dev"
matches_in_host="$(grep -n $host_name /etc/hosts | cut -f1 -d:)"
host_entry="${ip_address} ${host_name} salt"
if [ ! -z "$matches_in_host" ]
then
echo "Updating existing hosts entry"
echo $matches_in_host | while read -r line_number; do
sed -i "${line_number}s/.*/${host_entry}/" /etc/hosts
done
else
echo "Adding new hosts entry"
echo "${host_entry}" >> /etc/hosts
fi