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[Solved] How to calculate in sun bash

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Old 10-12-2012
Pieter0815 Pieter0815 is offline
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[Solved] How to calculate in sun bash

I have two problems, and it would be great if someone could help me:

The first line does not calculate. I have checked the origin term to calculate the variables
and the result is OK. Normal substactions with $xx -100 work, but not in this constallation. I tried it with "| bc" and no result too.

Code:
x= $((y - z))

 echo "$x"
 a=`echo "$x"-10 | bc`
 echo "$a"

And the comparison does not work, I tried -bg with no result too

Code:
 if [ `echo "$a" > 0  | bc` ]
   then sendme /rsi/logs/csc_summary_size_check.log stefan.madre
 fi

Thanks for your help

Moderator's Comments:
Please view this code tag video for how to use code tags when posting code and data.

Last edited by vbe; 10-12-2012 at 04:27 AM.. Reason: code tags..
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Old 10-12-2012
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rangarasan rangarasan is offline
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bash

Hi,

Welcome to the unix and linux forum !!

Please use code tags for your data samples and code.

Try this one,


Code:
First way:
x=1
y=2
z=0
((z=x+y))
echo ${z}

Second way:
x=1
y=2
z=0
z=$(echo "$x+$y"|bc)
echo ${z}

Cheers,
Ranga
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Old 10-12-2012
Pieter0815 Pieter0815 is offline
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Thank you. It works.
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