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I have this bash code, when I run this, it throws arithmetic operator error

#!/bin/bash

path=$1;
cluster=`cd $1; df -k . | tail -1 | awk -F: '{print $1}' | awk -F- '{print $1}'`
volume=`cd $1; df -k . | tail -1 | awk '{print $1}' | awk -F: '{print $2}' | awk -F/ '{print $3}'`

if [[ $cluster == *"clap"* ]]; then
avg_latency_val=$(cd /net/kkcmon02/app/whisper/netapp/perf/sanjose/$cluster-cls-mgt/svm/vs0/vol/$volume; whisper-fetch --pretty avg_latency.wsp| tail -n 30 | grep -v None | awk -v N=6 '{ sum += $N } END { if ( NR > 0 ) {print sum/NR} else {print 0}}')

elif [[ $cluster == *"isic"* ]]; then
echo "Graphana can monitor only Netapp volumes & this is a volume coming from Isilon."

else
avg_latency_val=$(cd /net/kkcmon02/app/whisper/netapp/perf7/sanjose/$cluster/vol/$volume; whisper-fetch --pretty avg_latency.wsp| tail -n 30 | grep -v None | awk -v N=6 '{ sum += $N } END { if ( NR > 0 ) {print sum/NR} else {print 0}}')

fi

if [[ "${avg_latency_val}" -le  "30" ]] ; then
    echo "Average Latency on the volume for last 30 mins is "${avg_latency_val}" ms (Good)"

elif [[ "${avg_latency_val}" -gt "30" ]] ; then
    echo "Average Latency on the volume for last 30 mins is "${avg_latency_val}" ms (Bad)"

else
    echo "Average Latency on the volume Looks Good!!"
fi

Below is the error occurred when I ran the above code. Please let me know what I'm doing wrong here

k_test.sh: line 21: [[: 1.98381: syntax error: invalid arithmetic operator (error token is ".98381")

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  • You've got a lot going on here. Can you post just the part you're having trouble with? Commented May 12, 2017 at 9:39
  • If it's a problem with decimals, try using the bc command Commented May 12, 2017 at 9:41
  • If you're trying to do arithmetic use ((..)) instead of [[..]] Commented May 12, 2017 at 9:55

1 Answer 1

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Bash only handles integer numbers. You will have to do some chop shop work to get it to understand a decimal point like that

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10 Comments

How is this an answer?
What do you mean "chop shop work?" bc handles decimals just fine. bc -q <<< "scale=9; (3.38524*(-2.3423))"
elif [[ "${avg_latency_val}" -gt "30" ]] ; It can't tell if this value is greater than because its a decimal point... Workaround: Remove the decimal point and simply change it to a different measurement of time. If you took the time to read, it attualy tells you... invalid arithmetic operator (error token is ".98381") Maybe read before giving me attitude...
@JonathanPugh, will try that.
I don't think that anyone is "giving you attitude", the point is that a vague reference to "chop shop work" is not a helpful answer.
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