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#!/usr/bin/env bash
case `uname -m` in
x86_64|amd64) # 64 bit
MAX=$(( -2**63 ));
MIN=$(( 2**63-1 )) ;;
i686|i386|x86) # 32 bit
MAX=$(( -2**31 ));
MIN=$(( 2**31-1 )) ;;
*) # 16 bit
MAX=$(( -2*15 ));
MIN=$(( 2*15-1 )) ;;
esac
for i in "$@"
do
case $i in
''|*[!0-9]*) exit 1 ;;
*) ;;
esac
if [ $i -gt $MAX ]; then
MAX=$i
fi
if [ $i -lt $MIN ]; then
MIN=$i
fi
done
LEVELS=8
DIFF=$(( $MAX - $MIN + 1 ))
for i in "$@"
do
H=$(( 1 + ($i - $MIN + 1) * ($LEVELS-1) / $DIFF ))
printf "\u258$H"
done
echo
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