Popen problem Post: 302936121

10 More Discussions You Might Find Interesting

1. Programming

question about popen();

Hi The following is my program to test popen() routine. The purpose is to print some contents of the corrent directory. But in fact, the output is only one character 'a', which I believe is the first char of the file "a.out". So, can anybody tell me what is wrong about this program?...

2. Programming

query in popen

hai friends I have written a tcp chat server in c.. I have designed a cgi program in c to control it... When i try to start the server from the cgi program, it is not starting. Why is that ? I have even tried giving the root ownership for all the programs.. Still its not. I have used the...

3. Programming

popen and tar, please HELP!

Hi there, I'm facing a problem running the tar command with the popen function. FILE* fp = popen("tar czf - textfile","r") // output this program should give the output to the stdout. I don't know if it is possible and which function like fprint() etc. should I use. I suppose that I...

4. Programming

using popen with background process

hi, how to work with a background process without a controlling terminal to make use of popen or system call ? when ever i use popen or system function call in foreground process, there is no problem with respect to that .. but when the same program is run as a background process without a...

5. Shell Programming and Scripting

Python: popen problems

Hello I'm writing a web server in python(obelisk-http.sourceforge.net) and I'm having a greeat problem with POST method it like that When someone make a POST request to the server it must open the executable(perl/python/.exe/elf) and send to the STANDART in (stdin) the request and get the...

6. Programming

prolems with pipes and popen in c

Hi! I'm trying to write a c program. The child process must transmit to the parent a file name and the parent must count the lines from the file and return te result to the child. Here is what i've done. It doesn't stop running, I guess. I'm sorry if it's an ugly code, i'm new at this stuff,...

7. UNIX for Advanced & Expert Users

popen and pclose solved

Hi I am trying to use popen function with wrtie option to give inputs to ftp command. #include "stdio.h" int main(int argv ,char *argc) { int size=0; char *buf; FILE *fp; fp = popen("ftp","w"); while(getline(&buf,&size,stdin) != -1) write(fp,buf);...

8. Programming

segmentation fault while using popen

hi, i am trying to use popen to run a grep process and check if the pattern exists in the file that i am searching in. i am getting segmentation fault when i try to execute the following code char *cd; char flag; char hdr_flpsp; char hdr_flpsp2; FILE *fp; printf ("program starts");...

9. Programming

question about popen in C

does popen print out the executed string result in stdout, or just evaluate it and not print the result?

10. Programming

question about system and popen in C

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...

LEARN ABOUT ULTRIX

qrun

qrun(8B)								PBS								  qrun(8B)

NAME

       qrun - run a pbs batch job

SYNOPSIS

       qrun [-a] [-H host] job_identifier ...

DESCRIPTION

       The  qrun  command is used to force a batch server to initiate the execution of a batch job.  The job is run regardless of scheduling posi-
       tion, resource requirements, or state.

       In order to execute qrun, the user must have PBS Operation or Manager privilege.

OPTIONS

       -a	      Specifies the job(s) is to be run asynchronously.

       -H host	      Specifies the host within the cluster on which the job(s) are to be run.	The host argument is the name of a host that is  a
		      member  of  the  cluster	of hosts managed by the server.  If the option is not specified, the server will select the "worst
		      possible" host on which to execute the job.

OPERANDS

       The qrun command accepts one or more job_identifier operands of the form:
	   sequence_number[.server_name][@server]

STANDARD ERROR

       The qrun command will write a diagnostic message to standard error for each error occurrence.

EXIT STATUS

       Upon successful processing of all the operands presented to the qrun command, the exit status will be a value of zero.

       If the qrun command fails to process any operand, the command exits with a value greater than zero.

SEE ALSO

       pbs_server(8B), pbs_sched(8B), qmgr(1B)

Local																	  qrun(8B)