UNIX for Dummies Questions & Answers

Hi guys,

Bit of a Unix amateur here!

As part of some research I'm doing I am looking into performance differences between IPv4 and IPv6, and have a list of IPv6 accessible websites and their respective v4 and v6 addresses.

I'm looking to do a ping to each one and record, for each domain, the v4 response summary times, and the v6 response summary times.

I've got all the IP addresses ready to grab from a Perl script which is pulling them from a database, and I can output them in the below fashion, as an example:

Code:

ping -c 4 <domain1v4addr>
ping6 -c 4 <domain1v6addr>
ping -c 4 <domain2v4addr>
ping6 -c 4 <domain2v6addr>
...

I've done some messing around and piped that through to sh and then grep'd to the summary lines and awk'd to the summary times (is this the most efficient way of doing it?) Only problem is that once a ping fails for an address, it doesn't produce a summary line with average times and my method kind of falls over.

The intention is to get the times and output them to a text file so I can import back into the database for further analysis, so the time values for the v4 and v6 addresses need to stay with the 'parent' domain, even if they fail.

Hopefully this sort of makes sense?! I've been scratching my head for hours now as to how to go about doing it but I've hit a bit of a wall. Any ideas?! Thanks!

Came up with a rough solution. I called the pings from the Perl script itself and captured the output into a text file, and now will just grep and awk through that and import the useful stuff into database.

</thread>