11-07-2004
popen is not intended for use with sockets. Read the popen man page.
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1. Programming
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
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2. Programming
Hi there,
I'm facing a problem running the tar command with the popen function.
FILE* fp = popen("tar czf - textfile","r")
// output
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3. Programming
hi,
how to work with a background process without a controlling terminal to make use of popen or system call ?
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Hello I'm writing a web server in python(obelisk-http.sourceforge.net)
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5. Programming
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,... (2 Replies)
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6. UNIX for Advanced & Expert Users
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");
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7. Programming
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;
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8. Programming
does popen print out the executed string result in stdout, or just evaluate it and not print the result? (30 Replies)
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9. Programming
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... (1 Reply)
Discussion started by: omega666
1 Replies
10. Programming
Hello all,
I am reading a huge zip file in POPEN process and then writting that to a normal file which of 2GB. Now the process is failing when I looked for the cause someother process comming in after I read my file and it is deleting the zip. But in theory the popen command should read the... (5 Replies)
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pclose(3) Library Functions Manual pclose(3)
NAME
pclose - Closes a pipe to a process
LIBRARY
Standard C Library (libc.so, libc.a)
SYNOPSIS
#include <stdio.h>
int pclose (
FILE *stream );
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:
pclose(): XPG4, XPG4-UNIX
Refer to the standards(5) reference page for more information about industry standards and associated tags.
PARAMETERS
Points to a FILE structure for an open pipe returned by a previous call to the popen() function.
DESCRIPTION
The pclose() function closes a pipe between the calling program and a shell command to be executed. Use the pclose() function to close any
stream you have opened with the popen() function. The pclose() function waits for the associated process to end, and then returns the exit
status of the command. If the original processes and the process started with the popen() function concurrently read or write a common
file, neither should use buffered I/O. If they do, the results are unpredictable.
RETURN VALUES
Upon successful completion, the pclose() function returns the exit status of the command.
If an error is detected, pclose() sets errno to an appropriate value and returns a value of -1.
ERRORS
If the pclose() function fails, errno may be set to the following value: The status of the child process could not be obtained.
RELATED INFORMATION
Functions: fclose(3), popen(3), wait(2)
Standards: standards(5) delim off
pclose(3)