EHCP-Force-Edition/ehcp/updateHostsFile.sh
2018-04-02 16:26:17 -06:00

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#!/bin/bash
# Hosts File Manager for EHCP
# Written by Eric Arnol-Martin (earnolmartin@gmail.com)
if [ -z "$1" ]; then
echo -e "You must send a string containing the host file entries related to EHCP"
else
# Creates a backup or the current host file
if [ ! -e /etc/hosts_backup ]; then
cp /etc/hosts /etc/hosts_backup;
fi
# If the EHCP Comment does not exist, add it:
ehcpComment="# EHCP Generated Entries # Place Custom Edits Above This Line Or They WILL BE LOST"
ehcpLocate=$(cat /etc/hosts | grep -i "$ehcpComment")
if [ -z "$ehcpLocate" ]; then
echo -e "\n$ehcpComment" >> /etc/hosts
fi
# Looks for the EHCP comment and returns all lines in the hosts file above it and resaves the host file minus ehcp entries
# nonEHCPEntries=$( sed -n "1,/$ehcpComment/ p" /etc/hosts | grep -vi "$ehcpComment")
# Safer:
nonEHCPEntries=$(awk "/$ehcpComment/ {exit} {print}" "/etc/hosts")
if [ ! -z "$nonEHCPEntries" ]; then
echo -e "$nonEHCPEntries" | tee /etc/hosts > /dev/null
# Add EHCP records to host file
echo -e "\n$ehcpComment" >> /etc/hosts
echo -e "$1" >> /etc/hosts
else
echo -e "Your hosts file is empty and messed up! Please fix it!"
fi
fi