#!/bin/sh

# Valid environment variables to appear in a planetlab config file
TAGS='IP_METHOD HOST_NAME DOMAIN_NAME PROXY_SERVER
      IP_ADDRESS IP_GATEWAY IP_NETMASK IP_NETADDR IP_BROADCASTADDR
      IP_DNS1 IP_DNS2 NET_DEVICE NODE_KEY NODE_ID
      IPMI_ADDRESS IPMI_MAC DISCONNECTED_OPERATION
      WLAN_SSID WLAN_IWCONFIG WLAN_MODE'

# Valid characters that variable can be set to
CHARS='[:alnum:]\.: _-'

REGEX=''

for t in $TAGS
do
    if [ "$REGEX" == "" ]
    then
        REGEX="^$t"
    else
        REGEX="$REGEX|^$t"
    fi
done
/usr/bin/dos2unix | /bin/egrep "($REGEX)\=\\\"[$CHARS]*\\\"\s*$"