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Calculating average

 
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# 1  
Old 01-25-2011
Calculating average
Hi,
i have 12 float variables in a bash file and i want to calculate the average of them.

Can any body help?
# 2  
Old 01-25-2011
The bash shell cannot handle floating point arithmetic. You need to use another utility such as awk or bc do the calculation.

Using awk for example:
Code:
$ cat file
1.23
3.45
5.46
6.23

$ awk 'BEGIN{s=0;}{s+=$1;}END{print s/NR;}' file
4.0925

This User Gave Thanks to fpmurphy For This Post:
limadario
# 3  
Old 01-25-2011
I want to do this but the values are in variables, not in a file.
# 4  
Old 01-25-2011
You can do something like this:
Code:
echo $var1 $var2 $var3 | awk '{s+=$0}END{print s/NR}' RS=" "

This User Gave Thanks to Franklin52 For This Post:
limadario
# 5  
Old 01-25-2011
it work's. Thanks

---------- Post updated at 11:34 AM ---------- Previous update was at 10:47 AM ----------

Franklin52 your command gives this error:

Code:
./calculos.sh: line 188: 4917536.9673: command not found

# 6  
Old 01-25-2011
Quote:
Originally Posted by limadario
it work's. Thanks

---------- Post updated at 11:34 AM ---------- Previous update was at 10:47 AM ----------

Franklin52 your command gives this error:

Code:
./calculos.sh: line 188: 4917536.9673: command not found

We can't guess what command you have on line 188...
This User Gave Thanks to Franklin52 For This Post:
limadario
# 7  
Old 01-27-2011
I fixed the problem. Thanks
 
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