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#!/bin/sh
gcd2() {
if test $2 = 0 ; then
echo $1
else
gcd2 $2 `expr $1 % $2`
fi
}
gcdn() {
r=$1; shift
for n in $*; do
r=`gcd2 $r $n`
done
echo $r
}
if test $# -gt 0 ; then
gcdn $*
fi
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