1 2i=1 3r=0 4while [ $i -lt $((0x100000000)) ]; do 5 t= 6 eval t=\${$i-x} 7 case $t in 8 x) ;; 9 *) echo "Problem with \${$i}" >&2; r=1 ;; 10 esac 11 i=$((i + 0x10000000)) 12done 13exit $r 14