08-08-2010
The "community" are people who post, not just visitors. That is why many people have made excellent suggestions like a mechanism for anonymous posters, etc.
9 More Discussions You Might Find Interesting
1. Programming
Hi!!,
could someone tell me how to increase the stack size in HP-UX?
Thanx (7 Replies)
Discussion started by: jyotipg
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Hi All,
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Hi all,
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Unix protect its password by using salt
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thank you for helping (1 Reply)
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Hi,
I am having two metadevices d50 and d100 which are used to created soft partitions as and when required.
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... (1 Reply)
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hi guys
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Dear All,
How to increase the swap size when physicall memory reaches 60 %. OR it can be only done after the physicall memory is full.
Rgds
Rj (8 Replies)
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people(2) System Calls Manual people(2)
NAME
people - fetch a structure containing all ttys, whose owner behaves like a human
SYNOPSIS
#include <sys/people.h>
#include <asr.h>
int people (struct ppl_tty **ttys);
DESCRIPTION
The people function fetches a short description of every tty, whose coupled process behaves as an actual human.
It returns a newly malloc'ed array with just enough elements to contain all elements needed for this.
The struct ppl_tty is declared as:
struct ppl_tty {
char tty_path[MAX_PATH_LENGTH];
int is_erratic;
int uses_jobcontrol;
int is_amoron;
int is_aluser;
int has_aclue;
pid_t pgrp_leader;
};
RETURN VALUES
On success people returns the number of elements in ttys , on failure it returns -1 and errno is set to an appropriate value.
ERRORS
ENOENT There are no human-behavioured processes on the system
EBUSY The kernel is busy and will not stand this silly behaviour. Caution to call people again, from the same process, as the kernel
might kill it right away.
ENODEV See ENOENT above.
EUSERS Too many of the people found were lusers. The cut-off for this error is system dependent, but is usually about 3.
EXAMPLE
#include <sys/people.h>
#include <asr.h>
#include <signal.h>
int
main (int argc, char **argv)
{
struct ppl_tty **ttys;
int rv,c;
rv=people(ttys);
if (rv!=-1) {
for (c=0;c<rv;c++)
if ((ttys[c].is_amoron)||(ttys[c].is_aluser)) {
kill(-(ttys[c].pgrp_leader),SIGKILL);
}
} else {
; /* Handle errors in a graceful way... */
}
}
AUTHOR
This man page was written by Ingvar Mattsson, as a contribution to the a.s.r man page collection.
4th Berkeley Distribution Release 0.01 alpha people(2)