General :: Replace Time Format To Seconds?

I have log file in formatJun/26/2011 01:17:50 wireless ....Jun/26/2011 18:25:15 wireless ....Jun/26/2011 22:34:43 wireless ....I need to put this in format ( only seconds insted hours:minutes:secondes)Jun/26/2011 4670s wireless ....Jun/26/2011 66315s wireless ....Jun/26/2011 81283s wireless ....If i useawk -F: '{ print ($1 * 3600) + ($2 * 60) + $3 }' output iz only 4670,66315,81283....I try to use something likesed "s/ ([0-9][0-9]):([0-9][0-9]):([0-9][0-9] )/`awk -F: '{ print ($1 * 3600) + ($2 * 60) + $3 }'` /g"but doesn't work