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_file="cerberus-securetty" infodir="usr/share/info" file="${_file}.info" post_install() { [[ -x "usr/bin/install-info" ]] || return 0 install-info -- "${infodir}/${file}" "${infodir}/dir" 2> /dev/null } post_upgrade() { post_install "$1" } pre_remove() { [[ -x "usr/bin/install-info" ]] || return 0 install-info --delete -- "${infodir}/${file}" "${infodir}/dir" 2> /dev/null }