topic Re: test on decimal value + awk in Operating System - HP-UX

test on decimal value + awk

MR VILLOT MR MONTAGNE — Wed, 23 Mar 2005 05:16:06 GMT

Hi,

I did a script to get top process with high CPU. I want to do a test with value 1.0 but I do not know how to do correctly the test :

awk '
BEGIN {
printf("PID\tUser\tTime\tCPU\tCommand\t\n")
}

BEGIN {
OFMT="%.6g"
PCPU=1.0
while ("cat /tmp/topfile" | getline )
{if ($12 >= $PCPU)
{OFS="\t"; print $3,$4,$10,$12,$13}
}
}

but I get :
PID User Time CPU Command
20333 appe11t 187:16 3.61 java
16006 root 0:23 0.93 top
25825 appe11t 152:30 0.30 java
21858 orae11t 0:00 0.76 oracleE11T
21558 appe11t 10:21 0.48 java
19392 appp11t 14:32 0.33 java
19390 appp11t 18:41 0.65 java
18558 orae11t 0:00 1.66 oracleE11T

thanks for help

Laurent

Re: test on decimal value + awk

Peter Godron — Wed, 23 Mar 2005 05:24:48 GMT

Laurent,
have tried replacing >= with -ge
Regards

Re: test on decimal value + awk

Peter Godron — Wed, 23 Mar 2005 05:37:14 GMT

Laurent,
sorry, my previous was wrong answer.

Please replace the $PCPU with PCPU in the if statement.
Regards

Re: test on decimal value + awk

MR VILLOT MR MONTAGNE — Wed, 23 Mar 2005 06:53:42 GMT

Peter,

what is the difference between $PCPU and PCPU in my condition ?
test on character value and numeric value.

Thanks
Laurent

Re: test on decimal value + awk

Peter Godron — Wed, 23 Mar 2005 07:33:51 GMT

Laurent,
it might help with testing to add before the if statement:

OFS="|";print $12,$PCPU,PCPU

You can then see the $PCPU has null value, whereas PCPU has the correct value.

Also be aware that you are comparing numbers, so 1.0 becomes 1 for the comparisons.

Hope this makes it clearer.

Regards

Re: test on decimal value + awk

Jdamian — Wed, 23 Mar 2005 08:47:22 GMT

I agree with Peter. The following line is wrong

$12 >= $PCPU

Right one should be:

$12 >= PCPU

My own script should be:

awk '
BEGIN {
printf("PID\tUser\tTime\tCPU\tCommand\n")
OFMT="%.6g"
PCPU=1.0
OFS="\t"
}

$12 >= PCPU { print $3,$4,$10,$12,$13 }
' /tmp/topfile