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POSIX message queue size

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Operating Systems Linux POSIX message queue size
# 8  
Old 06-09-2008
I don't understand your question really, but I don't think the ulimit you set for sh will apply for the separate bash process. You want something like

Code:
#!/bin/sh
ulimit -n 5
/one/two/appl start

... or bash if you really think you have a reason to prefer that (but it shouldn't be necessary, even if appl is a bash script).
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LEARN ABOUT ULTRIX

mq_unlink

MQ_UNLINK(3)						     Linux Programmer's Manual						      MQ_UNLINK(3)

NAME

       mq_unlink - remove a message queue

SYNOPSIS

       #include <mqueue.h>

       int mq_unlink(const char *name);

       Link with -lrt.

DESCRIPTION

       mq_unlink()  removes  the specified message queue name.	The message queue name is removed immediately.	The queue itself is destroyed once
       any other processes that have the queue open close their descriptors referring to the queue.

RETURN VALUE

       On success mq_unlink() returns 0; on error, -1 is returned, with errno set to indicate the error.

ERRORS

       EACCES The caller does not have permission to unlink this message queue.

       ENAMETOOLONG
	      name was too long.

       ENOENT There is no message queue with the given name.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       +------------+---------------+---------+
       |Interface   | Attribute     | Value   |
       +------------+---------------+---------+
       |mq_unlink() | Thread safety | MT-Safe |
       +------------+---------------+---------+
CONFORMING TO

       POSIX.1-2001, POSIX.1-2008.

SEE ALSO

       mq_close(3), mq_getattr(3), mq_notify(3), mq_open(3), mq_receive(3), mq_send(3), mq_overview(7)

COLOPHON

       This page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and  the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

Linux								    2015-08-08							      MQ_UNLINK(3)