Return Code 3

[vuakhobo]

In Perl I can do statement below.

$ValueA=Sum(3,4);
print "Value:$Value";

Is there away that I can do just like statement above in shell. I know return and $? in shell but is there an easy way to do it?

 

[PHV]

If you use a ksh-like shell then in the man page pay attention to the let special command and the $((expr)) substitution.

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ181-2886

 

[SamBones]

In ksh...

((VALUEA=3+4))
print "Value:${VALUEA}"

Hope this helps.

 

[feherke]

Hi

I think the question was not how to evaluate 3+4, but how to pass the result to the calling expression, if the evaluation was done by a function.

In shell scripts the return value is an exit status, not the result. The result is usually printed to standard output, then catched by the calling expression.

Value=[red]`[/red]Sum 3 4[red]`[/red]
[gray]# or[/gray]
Value=[red]$([/red]Sum 3 4[red])[/red]

echo "Value:$Value";

This is called Command Substitution in shell man pages, for example [tt]bash[/tt].

Feherke.

http://rootshell.be/~feherke/

 

[vuakhobo]

Thank you for fast respond PHV and Feherke

Feherke I've tried your solution but it didn't work.
This is my example code with $?

#!/usr/bin/ksh
sum ( ) {
total=`expr $1 + $2`
return $total
}

sum 3 4
ValueA=$?
echo "ValueA:$ValueA"

instead of using ValueA=$? to get total from the function
Is there anyother way to get total from function like in perl asign a value when call the function

 

[PHV]

#!/usr/bin/ksh
sum(){
expr $1 + $2
}
ValueA=$(sum 3 4)
echo "ValueA:$ValueA"

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ181-2886

 

[vuakhobo]

Wonderful. Thank PHV .. it works !!!! yeah