Sstrhsrtj

I have written an .awk which executes some operation on a .tr file and writes the output to a file. The END section of .awk file prints this:

printf("%15.2fn%15.5fn%15.2fn%15.2fn%15.2fn%10.2fn%10.2fn%10.5fn", rThroughput, rAverageDelay, nSentPackets, nReceivedPackets, nDropPackets, rPacketDeliveryRatio, rPacketDropRatio,rTime) ;



printf("%15.5fn%15.5fn%15.5fn%15.5fn%15.0fn%15.9fn", total_energy_consumption, avg_energy_per_bit, avg_energy_per_byte, avg_energy_per_packet, total_retransmit,rEnergyEfficiency);

I call this .awk file from a .shfile. After executing the command which runs the .awk file, I iterate over the values generated by the .awk file.

        awk -f Wireless_udp.awk 802_11.tr > "TEMP"



        while read val

        do

            l=$(($l + 1))



            if [ "$l" == "1" ]; then

                thr=$(echo "scale=5; $thr+$val/$iteration_float" | bc)

#               echo -ne "throughput: $val " 

            elif [ "$l" == "2" ]; then

                del=$(echo "scale=5; $del+$val/$iteration_float" | bc)

#               echo -ne "delay: $val " 

            elif [ "$l" == "3" ]; then

                s_packet=$(echo "scale=5; $s_packet+$val/$iteration_float" | bc)

#               echo -ne "send packet: $val " 

            elif [ "$l" == "4" ]; then

                r_packet=$(echo "scale=5; $r_packet+$val/$iteration_float" | bc)

#               echo -ne "received packet: $val " 

            elif [ "$l" == "5" ]; then

                d_packet=$(echo "scale=5; $d_packet+$val/$iteration_float" | bc)

#               echo -ne ;"drop packet: $val " 

            elif [ "$l" == "6" ]; then

                del_ratio=$(echo "scale=5; $del_ratio+$val/$iteration_float" | bc)

#               echo -ne "delivery ratio: $val " 

            elif [ "$l" == "7" ]; then

                dr_ratio=$(echo "scale=5; $dr_ratio+$val/$iteration_float" | bc)

#               echo -ne "drop ratio: $val "

            elif [ "$l" == "8" ]; then

                time=$(echo "scale=5; $time+$val/$iteration_float" | bc)

#               echo -ne "time: $val " 

            elif [ "$l" == "9" ]; then

                t_energy=$(echo "scale=5; $t_energy+$val/$iteration_float" | bc)

#               echo -ne "total_energy: $val "

            elif [ "$l" == "10" ]; then

                energy_bit=$(echo "scale=5; $energy_bit+$val/$iteration_float" | bc)

#               echo -ne "energy_bit: $val "

            elif [ "$l" == "11" ]; then

                energy_byte=$(echo "scale=5; $energy_byte+$val/$iteration_float" | bc)

#               echo -ne "energy_byte: $val " 

            elif [ "$l" == "12" ]; then

                energy_packet=$(echo "scale=5; $energy_packet+$val/$iteration_float" | bc)

#               echo -ne "energy_packet: $val " 

            elif [ "$l" == "13" ]; then

                total_retransmit=$(echo "scale=5; $total_retransmit+$val/$iteration_float" | bc)

#               echo -ne "total_retrnsmit: $val n"

            elif [ "$l" == "14" ]; then

                energy_efficiency=$(echo "scale=9; $energy_efficiency+$val/$iteration_float" | bc)

                #       echo -ne "energy_efficiency: "

            fi

#           echo "$val"

        done < "TEMP"

Everything was running fine, but when I added the last if-else condition and executed the script, it gave a (standard_in) 1: syntax error

Specifically, I'm taking about this segment of code:

            elif [ "$l" == "14" ]; then

                energy_efficiency=$(echo "scale=9; $energy_efficiency+$val/$iteration_float" | bc)

#               echo -ne "energy_efficiency: "

TEMP file contains:

      197645.74

        0.32776

       25000.00

        7350.00

       17348.00

     29.40

     69.39

  24.99826

      720.13300

        0.00015

        0.00117

        0.09798

              0

    0.001166018

I'm having difficulty why it's giving an error. Any help would be appreciated.

Link to full code:

.tcl file which generates the .tr file
.awk file:
.sh file:

bash --version gives:

GNU bash, version 4.3.48(1)-release (x86_64-pc-linux-gnu)

Copyright (C) 2013 Free Software Foundation, Inc.

License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

OS: Ubuntu 16.04 LTS

Your script doesn't appear to initialize the variable energy_efficiency, so the first time around the loop

echo "scale=9; $energy_efficiency+$val/$iteration_float"

produces

scale=9; +197645.74/1.0

which is a syntax error (bc apparently allows unary -, but not unary +)

$ echo "scale=9; +197645.74/1.0" | bc

(standard_in) 1: syntax error