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#! /usr/bin/bash
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while ! dnf -y system-upgrade download --refresh --releasever=31
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do
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read -t 30 -p "Continue? (y/n) " reply
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if (($?>128)); then
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echo "timed out, continuing..."
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elif [[ "$reply" =~ [Nn] ]]; then
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echo "Exiting..."
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exit
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else
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echo "Continuing..."
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fi
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done
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