scripts/get_dhcp_lease.sh

   1 #!/bin/bash
   2 awk '
   3 ($1=="lease" && $3=="{"){ lease=$2; active="no"; found="no" }
   4 ($1=="binding" && $2=="state" && $3=="active;"){ active="yes" }
   5 ($1=="hardware" && $2=="ethernet" && $3==tolower("'$1';")){ found="yes" }
   6 ($1=="client-hostname"){ name=$2 }
   7 ($1=="}"){ if (active=="yes" && found=="yes"){ target_lease=lease; target_name=name}}
   8 END{printf("%s", target_lease)} #print target_name
   9 ' /var/lib/dhcp/dhcpd.leases
  10