#!/bin/bash
function upload_log ()
{
    file=$1
    path=$2
    old=/tmp/$( basename $file ).old
    new=/tmp/$( basename $file ).new
    log=/tmp/$( basename $file ).log
    touch $old
    cp $file $new
    comm -1 -3 $old $new > $log
    cp $new $old
    if [ $( stat -c %s $log ) -ne 0 ] ; then 
        curl --insecure https://monitor.planet-lab.org/monitor/uploadlogs --form "dir=$path" --form "log=@$log"
    fi
}

upload_log ~/.bash_eternal_history hist
#upload_log /var/log/secure hist