#!/bin/bash

# Set curl command to update the IP
command="curl https://api.dnsexit.com/dns/ud/?apikey=2r6YilHU9YzFt2vKBT4W8A347e7w3G -d host=loogle.it,assd.sm"

if [ -d "/var/log" ]; then
 command="$command >> /var/log/ipupdate.log"
fi

# Get the existing crontab content
existing_crontab=$(crontab -l 2>/dev/null)

# Check if the command is already in crontab
if [[ $existing_crontab == *"$command"* ]]; then
    echo "Scheduled job already exists in crontab."
else
    # Add the scheduled job to the existing crontab content
    new_crontab="${existing_crontab}
*/12 * * * * $command"

    # Install the modified crontab
    echo "$new_crontab" | crontab -
    echo "The following job has been added to crontab. You may use command "crontab -l" to view the job"
    crontab -l | grep curl
fi