Dear all,
If I login to a Unix system (general user account), will the unix system generate a history file?
If positve, will it stored the IP adress also?
Thanks and Regards
Penny Li
;) (2 Replies)
Hello all,
I'm ufs file system, how can u use the same disk in another machine with the data in tact? to make it clear, I've an ufs FS in a mount point /file1 ( 8GB). now they decide to reintall the OS. After the reinstall, how can i get the same data as it is? will mounting the disk as /file1... (3 Replies)
Hello all !
Could someone throw some light on whether there's a limit to the number of characters contained in the command string that is passed to the system() call in C.
Is it OS dependent? If yes, what are the limits for each?
Thanks. (4 Replies)
Hello,
I have few questions about file system in Unix and Linux.
1. What's the difference between Unix and Linux in their file system? Are they the same?
2. Is in Unix directory for administrator "/root" - like in Linux - Ubuntu or not?
3.Where is the users directory in Unix? Is it... (2 Replies)
in man system it talks about SIGCHLD will be blocked, and SIGINT and SIGQUIT will be ignored.
Does this signal stuff also happen in popen command?
(even though man popen says nothing about signals)
also if I am not using wait(&status) and I am using waitpid(pid, NULL, 0)
how would... (1 Reply)
Hi
I have created a perl script & running it using Linux machine. I want my script to die when system command is unsuccessful but script is dying even when system command gets executed successfully. :wall:
I am using the command below :-
system($cmd) || die "FAILED $!";
print "Hello";
... (2 Replies)
I'm currently studying for my exam, and is practicing with sample exam questions.
However there is a question asking "Name THREE UNIX Directory system calls" and the answer given is "opendir, closedir and readdir", however the next question ask "Why is a write directory system call not included... (1 Reply)
Hi,
The file system unix use a multilevel indexes access to disk, 12 direct blocks, 1 single indirect block, 1 double indirect block, 1 triple indirect block:
Assuming a:
block = 512 bytes,
pointer = 4 byte,
and there is a file of 200 blocks,
how many disk access is needed to read the block... (1 Reply)
Hi,
I am on Solaris 10 server which is running Veritas. It's E420 server with two drives. I don't know much about Veritas. The other guy who works on this, on vacation this week. :-) Any way, looks like I have hard drive issue on the server.
When I do iostat -E. I see this.
sd0... (4 Replies)
Discussion started by: samnyc
4 Replies
LEARN ABOUT OPENSOLARIS
bsd_signal
bsd_signal(3C) Standard C Library Functions bsd_signal(3C)NAME
bsd_signal - simplified signal facilities
SYNOPSIS
#include <signal.h>
void (*bsd_signal(int sig, void (*func)(int)))(int);
DESCRIPTION
The bsd_signal() function provides a partially compatible interface for programs written to historical system interfaces (see USAGE below).
The function call bsd_signal(sig, func) has an effect as if implemented as:
void (*bsd_signal(int sig, void (*func)(int)))(int)
{
struct sigaction act, oact;
act.sa_handler = func;
act.sa_flags = SA_RESTART;
sigemptyset(&act.sa_mask);
sigaddset(&act.sa_mask, sig);
if (sigaction(sig, &act, &oact) == -1)
return(SIG_ERR);
return(oact.sa_handler);
}
The handler function should be declared:
void handler(int sig);
where sig is the signal number. The behavior is undefined if func is a function that takes more than one argument, or an argument of a
different type.
RETURN VALUES
Upon successful completion, bsd_signal() returns the previous action for sig. Otherwise, SIG_ERR is returned and errno is set to indicate
the error.
ERRORS
Refer to sigaction(2).
USAGE
This function is a direct replacement for the BSD signal(3UCB) function for simple applications that are installing a single-argument sig-
nal handler function. If a BSD signal handler function is being installed that expects more than one argument, the application has to be
modified to use sigaction(2). The bsd_signal() function differs from signal(3UCB) in that the SA_RESTART flag is set and the SA_RESETHAND
will be clear when bsd_signal() is used. The state of these flags is not specified for signal(3UCB).
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
|ATTRIBUTE TYPE |ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO sigaction(2), sigaddset(3C), sigemptyset(3C), signal(3UCB), attributes(5), standards(5)SunOS 5.11 24 Jul 2002 bsd_signal(3C)