12-06-2008
Quote:
Originally Posted by
Franklin52
The system function runs the command in a subshell (child) and parent shells don't inherit variables of childs.
Regards
i thought something like this is happning,
do you think learning more about "fork" will help me?
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I want to add paths to a CLASSPATH variable but if I use the :
setenv CLASSPATH /opt
all previous entries are erased. How do I append additional entries to a system variable without overwriting the original value.
Thanx (3 Replies)
Discussion started by: ianf
3 Replies
2. UNIX for Dummies Questions & Answers
Well first of all I am a real Unix newbie. I am taking a course on it in University. I kind of understand set and setenv but, I think it si something that I should really understand. So I thought that I would try a forum out and see how good you guys really are.
The question:
Execute the... (1 Reply)
Discussion started by: w6u6f
1 Replies
3. Shell Programming and Scripting
Hi
Is someone know about "setenv"? where can i find out this one?
Regards
Myoe (2 Replies)
Discussion started by: myoeminn
2 Replies
4. Shell Programming and Scripting
Hello,
I just want to know ow I can set permanent pathes or whatever using setenv command. I'm using c shell .
regards,
me (1 Reply)
Discussion started by: geoquest
1 Replies
5. Shell Programming and Scripting
Is it possible to set environement variable in a script (for example, perl script) so that the variable will be set after exiting the script - in a father shell. (2 Replies)
Discussion started by: kosta_mirkin
2 Replies
6. UNIX for Dummies Questions & Answers
Hi,
Is there any difference between setting an environment variable by EXPORT and by setenv? (3 Replies)
Discussion started by: dexkid
3 Replies
7. Shell Programming and Scripting
I am having the following environment setup script.
$cat dbenv.sh
#! /bin/csh
#
set history=32
stty sane
setenv ORACLE_HOME=/dboracle/orabase/product/10.1.0.3
set ORACLE_BASE=/dboracle/orabase
set... (2 Replies)
Discussion started by: rahulrathod
2 Replies
8. UNIX for Dummies Questions & Answers
Hi whats the setenv command in unix..??
i have set the oracle_home path as aa.ii.1 in kron_settings and
mentioned setenv oracle_path as aa.ii.2 in user settings.
Does this make any changes made to the path name of the oracle_home when i run a scripts in unix..???:( (1 Reply)
Discussion started by: abhi_123
1 Replies
9. Solaris
Hi all!
I need to add new environment variable.
e.g. # setenv LD_LIBRARY_PATH "/usr/ucblib:"
#
I check:# env
LD_LIBRARY_PATH=/usr/ucblib:
After rebooting I don't see this variable.
Why don't save this variable?
Thanks. (5 Replies)
Discussion started by: wolfgang
5 Replies
10. Shell Programming and Scripting
i have in c-shell
set value_str ="one three"
set line_seprator = ","
set value_and_sperator = "$value_str$line_seprator"
setenv STRING_CONCAT $STRING_CONCAT$value_and_sperator
and im getting error:
setenv: Too many arguments.
this is... (1 Reply)
Discussion started by: umen
1 Replies
LEARN ABOUT PHP
pcntl_fork
PCNTL_FORK(3) 1 PCNTL_FORK(3)
pcntl_fork - Forks the currently running process
SYNOPSIS
int pcntl_fork (void )
DESCRIPTION
The pcntl_fork(3) function creates a child process that differs from the parent process only in its PID and PPID. Please see your system's
fork(2) man page for specific details as to how fork works on your system.
RETURN VALUES
On success, the PID of the child process is returned in the parent's thread of execution, and a 0 is returned in the child's thread of
execution. On failure, a -1 will be returned in the parent's context, no child process will be created, and a PHP error is raised.
EXAMPLES
Example #1
pcntl_fork(3) example
<?php
$pid = pcntl_fork();
if ($pid == -1) {
die('could not fork');
} else if ($pid) {
// we are the parent
pcntl_wait($status); //Protect against Zombie children
} else {
// we are the child
}
?>
SEE ALSO
pcntl_waitpid(3), pcntl_signal(3), setproctitle(3).
PHP Documentation Group PCNTL_FORK(3)