export LC_ALL=C post_install() { usr/bin/update-ca-certificates --fresh >/dev/null 2>&1 } post_upgrade() { usr/bin/update-ca-certificates --fresh >/dev/null 2>&1 } pre_remove() { usr/bin/update-ca-certificates --fresh >/dev/null 2>&1 } post_remove() { # remove the cert file if it is empty [[ -s etc/ssl/certs/ca-certificates.crt ]] || rm -f etc/ssl/certs/ca-certificates.crt }