06-07-2006
Quote:
Originally Posted by matrixmadhan
change it that at the time of sem_creation itself !!!!
I want change it AFTER the sem creation...
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
hi, is there any command where we can monitor semaphores? (1 Reply)
Discussion started by: yls177
1 Replies
2. UNIX for Dummies Questions & Answers
I was going through a find tutorial and just couldn't get it...can someone explain it like he/she would explain a brain damaged dodo?
"find allows you to specify a pattern that can be bit-wise ANDed with the permissions of the file. Simply put a minus sign before the octal value. The group write... (1 Reply)
Discussion started by: napolayan
1 Replies
3. Shell Programming and Scripting
hi, in other previous post, someone suggested to set the " perm bits " to lock the file such that preventing others write to that same file, could someone please explain exactly what is perm bits and how can I achieve the desired result? Thanks! (1 Reply)
Discussion started by: mpang_
1 Replies
4. Shell Programming and Scripting
Hi,
Is there a way to use find command to list the directories for certain permissions. I know we can use find . -type d -perm nnn, where nnn is the permission number . However I wold like to know if I wanna search for wild card permissions i.e 75* / 7* / 55* , as i do not know the actual... (1 Reply)
Discussion started by: braindrain
1 Replies
5. UNIX for Dummies Questions & Answers
we have a file particular group(say abc) and we have a user(say def) in that group.I created file ram.txt it looked like this..
-rwxr--r-- 1 def abc 10 Oct 16 03:54 ram.txt
I changed the owner and group of the file as below
-rwxr--r-- 1 kriz test 10 Oct 16 03:58 ram.txt
when I log in as... (3 Replies)
Discussion started by: ramkriz
3 Replies
6. Shell Programming and Scripting
Hi,
I am looking to use a semaphore for the first time in one of my scripts. I am just wondering if there are any simple examples or tutorials around?
I am a beginner so the simpler the better :)
Thanks
-Jaken (2 Replies)
Discussion started by: Jaken
2 Replies
7. Shell Programming and Scripting
How to find all files for instance that match the permission rwxr*x--- where * is a wildcard which can be optionally asserted but all the others must match? Thanks in advance (7 Replies)
Discussion started by: stevensw
7 Replies
8. Red Hat
I am building an access template of what types of commands I will need sudo, to support an installed application and view log files in general what commands are recommended is there a general of what would be useful on Red Hat? (1 Reply)
Discussion started by: NelsonC
1 Replies
9. Solaris
Hi,
I have an 'empty' directory 'tmp' of which I am the owner and 777 permission. But when I try to delete the directory using rmdir or rm command, it gives error.
Command prompt snapshot:
=> uname
SunOS
... (4 Replies)
Discussion started by: platinum81
4 Replies
10. UNIX for Dummies Questions & Answers
Hi,
My apologies if my query is already available on this forum but I am new and could not find.
I need a script to list all directories/sub directories and files with permissions/groups/owners. The script would run from home directory and should capture every directory. How do I do this?
... (4 Replies)
Discussion started by: 8709711
4 Replies
LEARN ABOUT SUNOS
semaphore.h
semaphore.h(3HEAD) Headers semaphore.h(3HEAD)
NAME
semaphore.h, semaphore - semaphores
SYNOPSIS
#include <semaphore.h>
DESCRIPTION
The <semaphore.h> header defines the sem_t type, used in performing semaphore operations. The semaphore can be implemented using a file
descriptor, in which case applications are able to open up at least a total of {OPEN_MAX} files and semaphores. The symbol SEM_FAILED is
defined (see sem_open(3RT)).
Inclusion of the <semaphore.h> header can make visible symbols defined in the headers <fcntl.h> and <sys/types.h>. See fcntl.h(3HEAD) and
types.h(3HEAD).
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO
fcntl.h(3HEAD), types.h(3HEAD), sem_destroy(3RT), sem_getvalue(3RT), sem_init(3RT), sem_open(3RT), sem_post(3RT), sem_timedwait(3RT),
sem_unlink(3RT), sem_wait(3RT), attributes(5), standards(5)
SunOS 5.10 10 Sep 2004 semaphore.h(3HEAD)