/usr/lib/courier/imapd is in courier-imap 4.15-1.6.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | #! /bin/bash
#
# Copyright 1998 - 2005 Double Precision, Inc.
# See COPYING for distribution information.
prefix=/usr
exec_prefix=/usr
sbindir=${exec_prefix}/sbin
sysconfdir=/etc/courier
if test ! -f /etc/courier/imapd
then
	echo "/etc/courier/imapd does not exist, forgot make install-configure?"
	exit 1
fi
if test ! -f /etc/courier/imapd-ssl
then
	echo "/etc/courier/imapd-ssl does not exist, forgot make install-configure?"
	exit 1
fi
. /etc/courier/imapd-ssl
. /etc/courier/imapd
case $1 in
start)
	umask $IMAP_UMASK
	ulimit -v $IMAP_ULIMITD
	/usr/bin/env -i /bin/bash -c " set -a ; \
				prefix=/usr ; \
				exec_prefix=/usr ; \
				sbindir=${exec_prefix}/sbin ; \
				bindir=/usr/bin ; \
				. /etc/courier/imapd ; \
				. /etc/courier/imapd-ssl ; \
		IMAP_STARTTLS=$IMAPDSTARTTLS ; \
		PROXY_HOSTNAME=$PROXY_HOSTNAME ; \
		TLS_PROTOCOL=$TLS_STARTTLS_PROTOCOL ; \
		/bin/mkdir -p `dirname $PIDFILE` ; \
		/usr/sbin/courierlogger -pid=$PIDFILE -start $LOGGEROPTS \
		${exec_prefix}/sbin/couriertcpd -address=$ADDRESS \
			-maxprocs=$MAXDAEMONS -maxperip=$MAXPERIP \
			$TCPDOPTS \
			$PORT ${prefix}/lib/courier/courier/imaplogin \
				/usr/bin/imapd ${MAILDIRPATH}"
	;;
stop)
	/usr/sbin/courierlogger -pid=$PIDFILE -stop
	;;
restart)
	/usr/sbin/courierlogger -pid=$PIDFILE -restart
	;;
esac
exit 0
 |