OPS335 A2 Summer 2015 Tips

How to test your secondary DNS ?

nslookup -query=A scs.senecac.on.ca 142.204.33.53 | grep -v 142.204.33.53 | grep Address | awk '{print $2}'
142.204.140.179
PRI_ANS=$(nslookup -query=A scs.senecac.on.ca 142.204.33.53 | grep -v 142.204.33.53 | grep Address | awk '{print $2}')
#echo $PRI_ANS
#142.204.140.179
SEC_ANS=$(nslookup -query=A scs.senecac.on.ca 142.204.33.54 | grep -v 142.204.33.54 | grep Address | awk '{print $2}')
#echo $PRI_ANS
#142.204.140.179
#echo $SEC_ANS
#142.204.140.179
[ "$SEC_ANS" = "$PRI_ANS" ] && echo match