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# This script can be called in the following ways:
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# After the package was installed:
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# <postinst> configure <old-version>
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# If prerm fails during upgrade or fails on failed upgrade:
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# <old-postinst> abort-upgrade <new-version>
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# If prerm fails during deconfiguration of a package:
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# <postinst> abort-deconfigure in-favour <new-package> <version>
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# removing <old-package> <version>
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# If prerm fails during replacement due to conflict:
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# <postinst> abort-remove in-favour <new-package> <version>
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# Add the netdev group unless it's already there
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if ! getent group netdev >/dev/null; then
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addgroup --quiet --system netdev || true
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abort-upgrade|abort-deconfigure|abort-remove)
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echo "$0 called with unknown argument \`$1'" 1>&2