[Solved] Could someone that knows awk good fix this script for me?

Gen2ly · 2009-11-17 14:42:46

I found this script on the linuxquestions site that tests and displays network bandwidth. There's an error in the script though and my awk experience isn't enough to debug it and is giving me the error:

awk: cmd. line:10:       printf ("%4.0f", Ratio)}
awk: cmd. line:10:       ^ syntax error
awk: cmd. line:10:       printf ("%4.0f", Ratio)}
awk: cmd. line:10:                              ^ syntax error
^C/home/todd/.bin/bandwidth-test: line 21: [: : integer expression expected
BW Surchargé - Moyenne de  de Kb/sec pendant 20 secondes

This is the script:

#!/bin/bash
# bandwidth-test - test bandwidth from the command line

Fic_Tmp="/tmp/Fic_Tmp_VerifRatio.tmp"
NbrSec=20
/usr/bin/bwm-ng -I eth0 -o csv -T avg -C " " -c ${NbrSec} | awk '
BEGIN{
   BytesS=0
   NbrLecture=0}
/eth0/&&NR>2{
   BytesS+=$5/1024
   NbrLecture+=1}
END{
   Ratio=BytesS/NbrLecture
}
      printf ("%4.0f", Ratio)}' > ${Fic_Tmp}

Ratio=$(cat ${Fic_Tmp})
rm ${Fic_Tmp}

if [ "${Ratio}" -lt 110 ];then
   echo "BW OK - Moyenne de ${Ratio} de Kb/sec pendant ${NbrSec} secondes"
   exit 0
else
   echo "BW Surchargé - Moyenne de ${Ratio} de Kb/sec pendant ${NbrSec} secondes"
   exit 2
fi
exit $?

Anyone available to fix this for me?

Last edited by Gen2ly (2009-11-17 17:52:14)

benob · 2009-11-17 14:55:39

I didn't check if it works but the printf line should be within the braces of the END statement (so baseically there is an extra curly bracket):

END{
   Ratio=BytesS/NbrLecture
      printf ("%4.0f", Ratio)}' > ${Fic_Tmp}

Gen2ly · 2009-11-17 17:51:57

Ah, thought I counted all those. Whoops . Yep that did the trick. Thanks benob.

Edit: Just FYI to any that read this. This script only checks if you are in the cap range, so it's not really a bandwidth tester for the command line. The nearest I've found is 'iperf' which I'm unable to get to use yet.

Edit2 : netperf seems better suited for this, only been able to learn how to do download speed test so far:

netperf -c hostname -f K

Last edited by Gen2ly (2009-11-17 19:08:38)

Arch Linux

#1 2009-11-17 14:42:46

[Solved] Could someone that knows awk good fix this script for me?

#2 2009-11-17 14:55:39

Re: [Solved] Could someone that knows awk good fix this script for me?

#3 2009-11-17 17:51:57

Re: [Solved] Could someone that knows awk good fix this script for me?

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