1 $6 !~ /^ack/ && $5 !~ /[SFR]/ {
2 # given a tcpdump ftp trace, output one line for each send
5 # where <send time> is the time packet was sent (in seconds with
6 # zero at time of first packet) and <seq no> is the tcp sequence
7 # number of the packet divided by 1024 (i.e., Kbytes sent).
9 # convert time to seconds
11 tim = t[1]*3600 + t[2]*60 + t[3]
16 # get packet sequence number
18 printf "%7.2f\t%g\n", tim-tzero, substr($6,1,i-1)/1024