using AWK

[Jack Mc Lauren]

>>Hi Jack,



HI

> How can I read a file which contains a number and assign that number to
> a variable via awk programming? By the way, I want to use this awk program
> in a shell script.

>>I'm actually not sure what you're asking, exactly -- you want the number
>>to go into an awk variable? Or a shell variable?

Yes, I want the number to go into an awk variable.

>>Assuming you want it to go into an awk variable, I would try something
>>like this:

>>    getline my_number < filename;
>>    close filename;

>>That assumes the filename is stored in the variable named "filename".
>>It puts the number in the awk variable named "my_number".

>>To put that in context, let's say you're getting the filename from $0,
>>and you want to multiply the number by 2 and print it. You might do:

>>    filename = $0;
>>    getline my_number < filename;
>>    close filename;
>>    print my_number * 2;

>>Or if I completely misinterpreted your question, let me know :-)

>>    ~Ben


This is what i wrote:


#! /bin/sh

filename=$0
awk 'getline no < filename; print no'

But when I run this script

sh /awk_no.sh /var/no.txt

I have this error :

awk: syntax error at source line 1
 context is
        getline no < filename; >>>  print <<<  no
awk: bailing out at source line 1

Thank you :)