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Old 01-17-2008
kantze kantze is offline
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Join Date: Jan 2008
Posts: 1
gcd.sh script doesn't work...

Hi there. I'm new to scripting in bash shell and I have this problem.
I'm trying to make a script that returns the greatest common divisor of two integer numbers according to Euclid's algorithm...

Here is, what I've done:

Code:
#!/bin/bash

m=$1
n=$2

while [ "$n" != 0 ]
do
if [ "$m" -gt "$n" ]; #line 8
then m=$m-$n
else n=$n-$m
fi
done
echo $n

and I get an error message: line 8:integer exrpession expected
I run the gcd.sh writing in the terminal

Code:
./gcd.sh 14 28

where 14 and 28 are integers, right?
So, what's the problem? Could you please tell me what should I write?
 

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