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1. UNIX for Beginners Questions & Answers
Cannot present unpresented disks back again. On a test server tried this as a solution "multipath -r" and it worked. Too worried to try it in production before I know all the information.
Any info would be appreciated!
Also some links to the documentation on this specific issue could help a... (1 Reply)
Discussion started by: jsteppe
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2. Shell Programming and Scripting
Hi,
I am currently writing a perl module that will be passed queries from other scripts and use DBI to execute them on an Oracle Database. The problem I have is when it comes to the return.
I am currently getting this from my code:
FIELDA FIELDB FIELDC ... (6 Replies)
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3. Shell Programming and Scripting
I'm filling in a table of values for grades. I decided to go with reading into a hash from the files but I'm coming up with an error when printing a value that does not exist. I need to know if I can on-the-fly print a space (" ") or blank in place of the grade.
Here's what the output should... (2 Replies)
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4. Shell Programming and Scripting
Hello,
There's a third-party application's command that shows the application's status like "tail -f verybusy.log". When use the command, the output comes every 1-sec. but when it goes in a script below the output comes every 8-sec...What is the problem and how can I fix it?
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5. Shell Programming and Scripting
Hello!!!
I'm trying to pass the output from bash command to perl variable in a perl script, and I used the "system" command to execute the bash statment and pass the result to perl string variable, in this perl script I used a variable $file that store data for using it as a regular expression.... (2 Replies)
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6. Shell Programming and Scripting
Hi everybody;
I try to code a script perl to list all services that are active "ON" with a chkconfig -- list
the problem is that code list all services which are active or not.
#!/usr/bin/perl
use strict;
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7. Shell Programming and Scripting
Hi,
I have line in input file as below:
3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL
My expected output for line in the file must be :
"1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL"
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8. Shell Programming and Scripting
Let's say I want to write a program that run these 4 UNIX commands and redirect output to a file.
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use strict;
`cd \$HOME > output.txt`;
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9. Shell Programming and Scripting
in "cmd" command i want to copy the ouput of the command excuted to a particular file in a directory.
How to do this..??
Ex : $telnet->cmd(String => 'allip:acl=a1;',Prompt => '/</');
i want to copy o/p of the command "allip:acl=a1;" in a log file in a particular directory.
Plz suggest.. (1 Reply)
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10. Shell Programming and Scripting
i am using perl in win2000advanced server...
---------------------------
perl -version:
---------------------------
This is perl, v5.6.1 built for MSWin32-x86-multi-thread
(with 1 registered patch, see perl -V for more detail)
Copyright 1987-2001, Larry Wall
Binary build 638 provided by... (1 Reply)
Discussion started by: sekar sundaram
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PCNTL_WAITPID(3) 1 PCNTL_WAITPID(3)
pcntl_waitpid - Waits on or returns the status of a forked child
SYNOPSIS
int pcntl_waitpid (int $pid, int &$status, [int $options])
DESCRIPTION
Suspends execution of the current process until a child as specified by the $pid argument has exited, or until a signal is delivered whose
action is to terminate the current process or to call a signal handling function.
If a child as requested by $pid has already exited by the time of the call (a so-called "zombie" process), the function returns immedi-
ately. Any system resources used by the child are freed. Please see your system's waitpid(2) man page for specific details as to how wait-
pid works on your system.
PARAMETERS
o $pid
- The value of $pid can be one of the following:
possible values for $pid
+-----+---------------------------------------------------+
| | |
|< -1 | |
| | |
| | wait for any child process whose process group |
| | ID is equal to the absolute value of $pid. |
| | |
| | |
| -1 | |
| | |
| | wait for any child process; this is the same be- |
| | haviour that the wait function exhibits. |
| | |
| | |
| 0 | |
| | |
| | wait for any child process whose process group |
| | ID is equal to that of the calling process. |
| | |
| | |
|> 0 | |
| | |
| | wait for the child whose process ID is equal to |
| | the value of $pid. |
| | |
+-----+---------------------------------------------------+
Note
Specifying -1 as the $pid is equivalent to the functionality pcntl_wait(3) provides (minus $options).
o $status
-pcntl_waitpid(3) will store status information in the $status parameter which can be evaluated using the following functions:
pcntl_wifexited(3), pcntl_wifstopped(3), pcntl_wifsignaled(3), pcntl_wexitstatus(3), pcntl_wtermsig(3) and pcntl_wstopsig(3).
o $options
- The value of $options is the value of zero or more of the following two global constants OR'ed together:
possible values for $options
+----------+---------------------------------------------------+
| | |
| WNOHANG | |
| | |
| | return immediately if no child has exited. |
| | |
| | |
|WUNTRACED | |
| | |
| | return for children which are stopped, and whose |
| | status has not been reported. |
| | |
+----------+---------------------------------------------------+
RETURN VALUES
pcntl_waitpid(3) returns the process ID of the child which exited, -1 on error or zero if WNOHANG was used and no child was available
SEE ALSO
pcntl_fork(3), pcntl_signal(3), pcntl_wifexited(3), pcntl_wifstopped(3), pcntl_wifsignaled(3), pcntl_wexitstatus(3), pcntl_wtermsig(3),
pcntl_wstopsig(3).
PHP Documentation Group PCNTL_WAITPID(3)