This program works with out any error. here fork is not a system call. It just act as a variable.But how it works without declaring it? What data type it is?
Please help me to get a solution. I have tried all . But i cant come out with an answer.
Last edited by pludi; 08-31-2010 at 02:26 AM..
Reason: code tags, please...
Hi,
I was looking at the panic() code in linux kernel which is defined as:
51 /**
52 * panic - halt the system
53 * @fmt: The text string to print
54 *
55 * Display a message, then perform cleanups.
56 *
57 * This function never returns.
58 */
59
60 NORET_TYPE void panic(const char *... (1 Reply)
I am a novice at shell scripting. I have managed to cobble together a script that does exactly what I need it to do. However I am gathering information from 700+ devices. This script takes hours to complete the task. Is there a better way of doing it than what I have listed here? This script... (10 Replies)
ls displays files in tabbed output. Say a directory contains 3 files. ls will list all 3 in one line. So, I expect ls | wc -l to give 1, but it counts the nr of files and gives 3.
Can someone explain how this works? (3 Replies)
I am trying to get a count of each line
sub runit2 {
my ($file1a, $file2a) = @_;
my $file1_vala = $file1a->get;
my $file2_vala = $file2a->get;
open (FILE1a, "$file1_vala") or die;
open (FILE2a, "$file2_vala") or die;
chomp(my @strings = <FILE2a>);
while (1) {
foreach $pattern... (4 Replies)
pls explain me how this works....
DECODE (SUBSTR (field, 1, 1),'''', '''''' || field || '''','''' || field || '''')
here field is a column in an oracle table.... (7 Replies)
When I try to execute script, I get message:
>aa.pl
zsh: command not found: aa.pl
but
>./aa.pl
works OK.
What to change in environment to force the former way to work?
Thank you,
Alex Z (4 Replies)
I found this command, sed -e 's/<*>//g', will return the content of a line with pattern something like this, <tag1>content</tag1>..
How does this works?
What does sed -e 's/<*>//g' actually do?
What if I wanted to get content of a line with pattern something like this, content?
thanks.. (5 Replies)
Hi,
I need to compare and get an output for values greater than "X10" (values contain both characters and numbers) using if loop...
FOR EG:
I want to export values greater than X10, i.e., in-case if the value is X11 and greater than the "if" part to be executed if the value is X9 and... (2 Replies)
Hi,
just i would like to know, how will be the response if you try to read a 40GB compressed file using zcat.
a)Uncompress the 40GB file and have it in the disk. use cat to view the steps.
b)Use zcat directly to view the compressed file?
What are the steps being occurred in step (b)?
Where... (3 Replies)
I'm using Sun Solaris.
I used mailx -r "MyEmailId" -s "sub" "toEmailID" from my unix id and it worked.
But when i run the same script from other's unix id it works as well. mean any one in my environment can mail to other's email without my knowledge.
My questions are
How it works and why it... (1 Reply)
Discussion started by: kg_gaurav
1 Replies
LEARN ABOUT HPUX
pthread_atfork
pthread_atfork(3T)pthread_atfork(3T)NAME
pthread_atfork() - register fork handlers.
SYNOPSIS PARAMETERS
prepare This function is called before performing the
parent This function is called in the parent process after performing the
child This function is called in the child process after performing the
DESCRIPTION
The function allows an application to install fork handlers. These fork handlers will be called before and after a operation. These han-
dlers will be called in the context of the thread calling Similar to the handlers, the application does not need to do anything special for
these fork handlers to be called. They will be invoked by the system when a operation occurs.
The function is called before the operation in the parent process. The function is called after the operation in the parent process. The
function is called after the operation in the child process.
If a fork handler is not needed in one or more of these three places, the appropriate fork handler parameter may be set to NULL.
A process may install multiple fork handling functions. The and fork handlers will be called in the order in which they were installed
(i.e., The fork handlers will be called in the opposite order (i.e.,
RETURN VALUE
Upon successful completion, returns zero. Otherwise, an error number is returned to indicate the error (the variable is not set).
ERRORS
If any of the following occur, the function returns the corresponding error number:
[ENOMEM] There is insufficient table space to install the fork handlers.
AUTHOR
was derived from the IEEE POSIX P1003.1c standard.
SEE ALSO fork(2), atexit(3).
STANDARDS CONFORMANCE
Pthread Library pthread_atfork(3T)
08-31-2010
How this works?
