Hello all,
How do I start a background process and save the process id to a file on my system. For example %wait 5 & will execute and print the process id. I can't figure out how to get it to a file. I've tried: > filename 0>filename 1>filename.
Any assistance is most appreciated.
Thanks,
Jim... (10 Replies)
I have made a shell that accept a command and parameters. It is working properly. I have tryed to implement background process in main(). But i dont know to implement them. Can anyone give me a lille example??
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
/* The following... (3 Replies)
Hi Guys,
I am facing some weird problem with my shell script. The script shows up a menu and for every ontion internally calls a shell script which start/stop various servers. When I am using '&' while calling the internal shell script so that the server run in the background. For exiting... (1 Reply)
Hi,
In shell script when I use
script1 >> filelog
the echo statments of script1 gets printed in the filelog
but when I try to run script in background i.e,
script1 & >> filelog
nothing gets printed in the filelog.
Anybody knows whats going on here.
thanks (3 Replies)
What I need to learn is how to use a script that launches background processes, and then kills those processes as needed.
The script successfully launches the script. But how do I check to see if the job exists before I kill it?
I know my problem is mostly failure to understand parameter... (4 Replies)
Hi,
I am using net::ftp for transferring files now i am trying in the same Linux server as a result ftp is very fast but if the server is other location (remote) then the file transferred will be time consuming.
So i want try putting FTP part as a background process. I am unaware how to do... (5 Replies)
Hi,
I have written a menu driven shell script in which as per the choice, I run the another script on background.
For eg:
1. get info
2)process info
3)modify info
All the operations have different scripts which i schedule in background using &.
However I wish to display the error... (0 Replies)
Discussion started by: ashima jain
0 Replies
LEARN ABOUT HPUX
getpgrp
getpid(2) System Calls Manual getpid(2)NAME
getpid(), getpgid(), getpgrp(), getpgrp2(), getppid() - get process, process group and parent process ID.
SYNOPSIS DESCRIPTION
These functions return process, process group and parent process IDs, as follows:
Process group ID of the specified process.
If pid is zero, the call applies to the calling process. Same result as
Process group ID of the calling process.
Process group ID of the specified process.
If pid is zero, the call applies to the calling process. Same result as
Process ID of the calling process.
Parent process ID of the calling process.
If the parent process is the initialization process (known as the call returns 1.
Security Restrictions
The system call is subject to compartmental restrictions. See compartments(5) for more information about compartmentalization on systems
that support that feature.
Compartmental restrictions can be overridden if the process possesses the privilege (PRIV_COMMALLOWED). Processes owned by the superuser
may not have this privilege. Processes owned by any user may have this privilege, depending on system configuration. See privileges(5)
for more information about privileged access on systems that support fine-grained privileges.
RETURN VALUE
The functions return the following values:
Successful completion.
n is a nonnegative process ID, as described above.
Failure:
and only. is set to indicate the error.
ERRORS
If or fails, is set to one of the following values:
[EPERM] The current process and pid are not in the same session (see setsid(2)).
[ESRCH] No process can be found corresponding to that specified by pid.
AUTHOR
and were developed by HP, AT&T, and the University of California, Berkeley.
SEE ALSO exec(2), fork(2), setpgid(2), setsid(2), signal(5).
STANDARDS CONFORMANCE getpid(2)