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Full Discussion: using ls -lrt instead of ls
Top Forums UNIX for Dummies Questions & Answers using ls -lrt instead of ls Post 302344132 by Corona688 on Friday 14th of August 2009 04:31:55 PM
Old 08-14-2009
The best book on UNIX usually comes with it. You can access manual pages on nearly any command with the 'man' command. Try 'man ls'.
 

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

NAME
sem_unlink - remove a named semaphore SYNOPSIS
#include <semaphore.h> int sem_unlink(const char *name); Link with -lrt or -pthread. DESCRIPTION
sem_unlink() removes the named semaphore referred to by name. The semaphore name is removed immediately. The semaphore is destroyed once all other processes that have the semaphore open close it. RETURN VALUE
On success sem_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 semaphore. ENAMETOOLONG name was too long. ENOENT There is no semaphore with the given name. CONFORMING TO
POSIX.1-2001. SEE ALSO
sem_getvalue(3), sem_open(3), sem_post(3), sem_wait(3), sem_overview(7) COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. Linux 2006-03-25 SEM_UNLINK(3)
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