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#!/bin/sh
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i=0
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while true; do
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read -p "Ready to scan. Scan your item(s)? y/N " yn
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case $yn in
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[Yy]* ) scanimage --format=png > ${i}scan.png; i=$(($i+1));;
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[Nn]* ) exit;;
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* ) printf "Please answer yes or no. ";;
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esac
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done
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