protection contre les variables non assignées
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# version 0.3
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# Copyright 2007-2018 Gregory Colpart <reg@evolix.fr>, Jérémy Lecour <jlecour@evolix.fr>, Evolix <info@evolix.fr>
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# Treat unset variables as an error when substituting.
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set -u
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test -f /etc/evomaintenance.cf && . /etc/evomaintenance.cf
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[ -n "${HOSTNAME}" ] || HOSTNAME=$(hostname)
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