Corrected the file extention
Add this to a file and run in cron:
awk '{if ($1) {$1=strftime("%c",$1); print $1 ";" $2 ";" $3 ";" $4}}' /var/lib/misc/dnsmasq.leases > /tmp/dhcpleases.txt cp /tmp/dhcpleases.txt /var/www/html/