/usr/sbin/qmail-qstat is in qmail 1.06-6.
This file is owned by root:qmail, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | #!/bin/sh
# WARNING: This file was auto-generated. Do not edit!
cd /var/lib/qmail
messdirs=`echo queue/mess/* | wc -w`
messfiles=`find queue/mess/* -print | wc -w`
tododirs=`echo queue/todo | wc -w`
todofiles=`find queue/todo -print | wc -w`
echo messages in queue: `expr $messfiles - $messdirs`
echo messages in queue but not yet preprocessed: `expr $todofiles - $tododirs`
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