I'm having an infuriating issue with number comparison. Basically I've written a script that runs in cygwin that SSH's to 4 servers, figures out a success percentage and if it is less than a certain point, triggers an alarm. I've managed to get it to connect to the servers, figure out the percentage and create the if statements. Unfortunately what should be the easiest part, comparing the numbers is driving me crazy.
Here is the script (i've added the part about printing the variables to help debug):
Code:
(22:42:27\[DeCo@deco)
[~]$ cat bkcheck.orig
#!/usr/bin/bash
bkc ()
{
ssh dncsb tail -1 /dvs/dncs/tmp/PerformanceMonitoring/dsmperfmon.csv|awk -F, '{print ($3 / $4) * 100}'
}
qnc ()
{
ssh dncsq tail -1 /dvs/dncs/tmp/PerformanceMonitoring/dsmperfmon.csv|awk -F, '{print ($3 / $4) * 100}'
}
smc ()
{
ssh dncss tail -1 /dvs/dncs/tmp/PerformanceMonitoring/dsmperfmon.csv|awk -F, '{print ($3 / $4) * 100}'
}
nmc ()
{
ssh dncsn tail -1 /dvs/dncs/tmp/PerformanceMonitoring/dsmperfmon.csv|awk -F, '{print ($3 / $4) * 100}'
}
bkerrors=`bkc`
qnerrors=`qnc`
smerrors=`smc`
nmerrors=`nmc`
echo $bkerrors
echo $qnerrors
echo $smerrors
echo $nmerrors
while true;do
if
[[ "$bkerrors" < "97" ]];then
cygstart bk.wav
printf "Uh-oh, at `date +%H:%M:%S` Brooklyn VOD is streaming at $bkerrors%%\n"
sleep 5
else
printf "As of `date +%H:%M:%S`,Brooklyn VOD is streaming at $bkerrors%%\n"
fi
if
[[ "$qnerrors" < "97" ]];then
cygstart qn.wav
printf "Uh-oh, at `date +%H:%M:%S` Queens VOD is streaming at $qnerrors%%\n"
sleep 5
else
printf "As of `date +%H:%M:%S`,Queens VOD is streaming at $qnerrors%%\n"
fi
if
[[ "$smerrors" < "97" ]];then
cygstart sm.wav
printf "Uh-oh, at `date +%H:%M:%S` S.Manhattan VOD is streaming at $smerrors%%\n"
sleep 5
else
printf "As of `date +%H:%M:%S`,S.Manhattan VOD is streaming at $smerrors%%\n"
fi
if
[[ "$nmerrors" < "97" ]];then
cygstart nm.wav
printf "Uh-oh, at `date +%H:%M:%S` N.Manhattan VOD is streaming at $nmerrors%%\n"
sleep 5
else
printf "As of `date +%H:%M:%S`,N.Manhattan VOD is streaming at $nmerrors%%\n"
fi
sleep 300
clear
bkerrors=`bkc`
qnerrors=`qnc`
smerrors=`smc`
nmerrors=`nmc`
done
[~]$ ./bkcheck.orig
99.9454
100
99.8703
99.3868
As of 22:45:23,Brooklyn VOD is streaming at 99.9454%
Uh-oh, at 22:45:24 Queens VOD is streaming at 100%
As of 22:45:30,S.Manhattan VOD is streaming at 99.8703%
As of 22:45:30,N.Manhattan VOD is streaming at 99.3868%
The script runs without throwing an errors, but the logic doesn't work. If the current number is below 97 it does set off the alarm, but it also sets off the alarm if the percentage is 100 or higher. At first I thought it was something to do with the script only understanding integers, but that doesn't seem to be the case. I've tried every combination of single ([) brackets and double ([[) brackets I can think of and still getting the same thing. I've also tried quoting and not quoting the variables, but still the same errors.
I know that this is going to be something stupid...but I'm pulling my proverbial hair out here...
Thanks for the try. I tried "-lt" as well and it didn't work. I don't have the output in front of me right now, but it would throw and actual error instead of just triggering the wrong response.
edit:
I get the following when I use -lt (and no quotes around anything)
[~]$ ./bkcheck.orig
99.9219
99.7949
99.8012
99.8723
./bkcheck.orig: line 28: [[: 99.9219: syntax error: invalid arithmetic operator (error token is ".9219")
As of 23:43:48,Brooklyn VOD is streaming at 99.9219%
./bkcheck.orig: line 36: [[: 99.7949: syntax error: invalid arithmetic operator (error token is ".7949")
As of 23:43:49,Queens VOD is streaming at 99.7949%
./bkcheck.orig: line 44: [[: 99.8012: syntax error: invalid arithmetic operator (error token is ".8012")
As of 23:43:49,S.Manhattan VOD is streaming at 99.8012%
./bkcheck.orig: line 52: [[: 99.8723: syntax error: invalid arithmetic operator (error token is ".8723")
As of 23:43:49,N.Manhattan VOD is streaming at 99.8723%
That works but not if there are decimal places it fails. and I still don't understand why there were times when the var would be 100 and it would still fail.
I understand that the issue is it only works with integers, but there must be a way to compare non integers...or worst case round off to the closest whole number.
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