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Incrementing variable in for

 
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# 1  
Old 01-27-2011
Incrementing variable in for
Hi,
want to increment a variable in a for loop like this:
Code:
for (( c=$total-1; c>=0; c-- ))
do
if [ $maximo <= $res$c ];            
then
maximo=$valores
fi
done

But it gives the error:
No such file or directory

How can i do this only incrementing the c variable?

Thanks
# 2  
Old 01-27-2011
I think c=$total-1 maybe the problem.

try:-

Code:
x=`expr ${total} - 1`
for (( c=$total; c>=0; c-- ))

Last edited by radoulov; 01-27-2011 at 07:45 AM.. Reason: Code tags!
# 3  
Old 01-27-2011
Not sure what you mean - certainly looks like you're decrementing 'c'.
# 4  
Old 01-27-2011
Code:
if [ $maximo <= $res$c ];

is a mixture of "bash" and sh/ksh...so either:
Code:
if [ $maximo -le $res$c ];

or
Code:
if(( $maximo <= $res$c ));

# 5  
Old 01-27-2011
I want to increment the res$c so i can get a variable like:
$res1
$res2
$res3
$res4
# 6  
Old 01-27-2011
Sounds like you should use an array.
# 7  
Old 01-27-2011
Quote:
Originally Posted by limadario
I want to increment the res$c so i can get a variable like:
$res1
$res2
$res3
$res4
Use eval, an example:
Code:
i=5

eval res$i="ABC"
echo $res5

 
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