09-25-2010
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10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
I have a webpage, http://my.dns.com/~zp523/index.html,
I want all people to have read and execute privileges. I want to extend it with execute privilege. Which command should be used in chmod?
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thk a lot!! (1 Reply)
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2. Filesystems, Disks and Memory
why do inode indices starts from 1 unlike array indexes which starts from 0
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id be glad if i get to know the answer quickly
:) (0 Replies)
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3. Shell Programming and Scripting
Hi All,
I need to check for a process, if the process is running then I have to create an HTML file, say A.HTML.
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4. Shell Programming and Scripting
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5. UNIX for Dummies Questions & Answers
Hi,
I've several files with two collumns, where first collumn can be used as index.
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6. AIX
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Hello,
I am trying to create a php file that would copy given index.html file to all directories (and subdirectories) on my site that don't have one. This is to prevent directory listings on nginx. This index.html file is placed in the /populate directory and looks like this:
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8. Shell Programming and Scripting
Hi
I want to attach multiple index.html, index_v2 file using mutt command
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10. UNIX for Beginners Questions & Answers
Hi you all,
this is my first post in this forum. I'm italian (please forgive me) :-) so my english will fail to be correct...
Anyway, let's get straight to the point!
I have a text file like this:
,,,,
Disney: 00961-002,,,,
,Pippo: 00531-002,,,
,,Pluto: 00238-002,,
... (5 Replies)
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LEARN ABOUT CENTOS
sigorset
SIGSETOPS(3) Linux Programmer's Manual SIGSETOPS(3)
NAME
sigemptyset, sigfillset, sigaddset, sigdelset, sigismember - POSIX signal set operations.
SYNOPSIS
#include <signal.h>
int sigemptyset(sigset_t *set);
int sigfillset(sigset_t *set);
int sigaddset(sigset_t *set, int signum);
int sigdelset(sigset_t *set, int signum);
int sigismember(const sigset_t *set, int signum);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
sigemptyset(), sigfillset(), sigaddset(), sigdelset(), sigismember():
_POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE || _POSIX_SOURCE
DESCRIPTION
These functions allow the manipulation of POSIX signal sets.
sigemptyset() initializes the signal set given by set to empty, with all signals excluded from the set.
sigfillset() initializes set to full, including all signals.
sigaddset() and sigdelset() add and delete respectively signal signum from set.
sigismember() tests whether signum is a member of set.
Objects of type sigset_t must be initialized by a call to either sigemptyset() or sigfillset() before being passed to the functions
sigaddset(), sigdelset() and sigismember() or the additional glibc functions described below (sigisemptyset(), sigandset(), and sig-
orset()). The results are undefined if this is not done.
RETURN VALUE
sigemptyset(), sigfillset(), sigaddset(), and sigdelset() return 0 on success and -1 on error.
sigismember() returns 1 if signum is a member of set, 0 if signum is not a member, and -1 on error. On error, these functions set errno to
indicate the cause.
ERRORS
EINVAL sig is not a valid signal.
CONFORMING TO
POSIX.1-2001.
NOTES
Glibc notes
If the _GNU_SOURCE feature test macro is defined, then <signal.h> exposes three other functions for manipulating signal sets.
int sigisemptyset(sigset_t *set);
returns 1 if set contains no signals, and 0 otherwise.
int sigorset(sigset_t *dest, sigset_t *left, sigset_t *right);
places the union of the sets left and right in dest.
int sigandset(sigset_t *dest, sigset_t *left, sigset_t *right);
places the intersection of the sets left and right in dest.
sigorset() and sigandset() return 0 on success, and -1 on failure.
These functions are nonstandard (a few other systems provide similar functions) and their use should be avoided in portable applications.
SEE ALSO
sigaction(2), sigpending(2), sigprocmask(2), sigsuspend(2)
COLOPHON
This page is part of release 3.53 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 2013-04-19 SIGSETOPS(3)