[ns] AWK Problem-Urgent

[Shaili Desai]

Following is the error I am getting when running the attached awk file.

awk: measure-loss.awk:2: 'in expressionss.awk:2: ^ invalid char '

I gave the command awk -f measure-loss.awk pmp.tr
Following is the sample record from my pmp.tr file:
s 1.375051200 _0_ AGT  --- 0 cbr 512 [] ------- [1:0 0:0 32 0]  [0]  0  0
r 2.000054006 _1_ AGT  --- 0 cbr 512 [] ------- [1:0 0:0 32 0]  [0]  0  0
and I am pasting below the measure-loss.awk file:

It is used to calculate pakcet loss:

BEGIN {

# Initialization. Set two variables. fsDrops: packets drop. numFs: packets
sent

        fsDrops = 0;

        numFs = 0;
    numFr = 0;

}

{

   action = $1;

   time = $2;

   from = $3;

   to = $4;

   type = $5;

   pktsize = $6;

   flow_id = $8;

   src = $9;

   dst = $10;

   seq_no = $11;

   packet_id = $12;



        if (from==0 && to==AGT && action == "s")

                numFs++;

        if (from==1 && to==AGT && action == "r")

                numFr++;
    fsDrops= numFs-numFr;


}

END {

        printf("number of packets sent:%d lost:%d\n", numFs, fsDrops);

}

Can anyone suggest me on what could have been  the mistake? I would
appreciate if someone can help me as it is very urgent.
THanks in advance.

Thanx
Shaili Desai
Master's Candidate
Telecommunications and Management
University of Maryland,College Park,USA