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What one line unix talk combo would generate 95% cpu load? Im talking like something below

Given the following code

#!/usr/bin/perl -w
use IO::Socket;

my($handle, $line, $kidpid);
$handle = IO::Socket::INET->new(
PeerAddr =>"64.22.229.139",
...

I could have sworn to god that I read someone that fork and exec created new fd's in the book "Advanced Programming in the Unix Environment" by Stevens and Rago.

1) The OS I'm running on is Fedora Core 6. However, the target systems are FreeBSD 5.x and OpenBSD 3.x. I even had some guy network engineer from ebay email me saying that he was able to get a clean...

On the code snippet I posted, fork and exec get called like 50 times in a row. The guy that is helping me develop this program says that every once in a while he gets the error message

"Out of...

In another part of the program, a file is opened using fopen(). Anyhow, I was wondering if using dup2() in the following snippet was a legal close-on-exec move.


static int
tel(char *user,...

Wait, never mind. It shows up in the debugger.

Given the following:


#include <string.h>
#include <stdlib.h>
#include <pwd.h>
#include <unistd.h>
#include <utmp.h>
#include <stdio.h>
#include <time.h>

int main(int argc, char *argv[])...

Okay, I decided to quit being up 48 hours and then start writing some crazy code. Instead, I've opted to sleep and only write semi-crazy code. How about using memcpy()? Maybe something like this

...

OpenBSD complains when it sees this function in my program


/*This function takes the string "test\n" and returns the string "test\n\test\ntest\n"
ENTROPY = 1024
*/
void *build_string(int...

I wasn't too sure what I was doing either. I was just trying to get it to work at the time. Anyhow, I thought about it and I think using strcpy() is the correct approach.

Sometime this week, I'll post a URL with the ENTIRE code.

Bear with this.

My brain doesn't always function correctly after I've worked 14 hours.


if((strarr=malloc(sizeof(line) + 1)) == NULL)


should have been

if((strarr=malloc(strlen(line)...

I'm tracking down a stupid computer bug. I'm just sort of curious why
'/0' string won't show up after I add it. Here is the code snippet

void *allocate_string_array(size_t len, char *line, char...

Okay, no before anyone starts to think "Hey, I might be doing this kids homework", I would like to point out that it's been over a decade since I've been in school. Anyhow, here is what I've...

If my input file was
about

I would need
ab
out

in my input file.

I just tried using fwrite() and it didn't work.

Regarding point 1. I would assume '\n' would be missing if it was the last line in the file. I still have no idea how to solve it in this case.

Regarding point 2. I compared the line with '\n'....

I'm at a total loss how to attack this problem.

I have a file that contains
ab

What I need to do is if
1)if the string "ab" doesn't contain a newline, I need to insert one back into the...

A while back, I was was working on a program that expand something like
a-z to abc...xyz. Anyhow, I have having similar issues with stuff being evaluated and discarding the results. I think this is...

I'm using the GNU C Compiler. I'm suspecting it might have to do with that fact that the '>> isn't a sequence point.

In one of the Unix Programming FAQ's they have the following headers in the program to catch SIGCHLD


#include <sys/types.h> /* include this before any other sys headers */
#include...

Yeah. Before I had discovered the miracles of emacs RCS, I was just updating my programs without keeping track of previous versions. One of the versions I didn't keep track of was the previous...

An older version of this program I had used an array vs an input file. Ie, I would use something like


char *name[MAX]="la\nla\nla\n";


Then I would pass this array to my tel() function (ie...

neither one worked.

Below is a crude, but working example of what I mean. Please be gentle on the coding errors.


/*I wrote the original base code. I only know of one person that has taken...

When I run

#include <unistd.h>
#include <stdlib.h>

int main(int argc,char **argv)
{
execlp("tel","tel",argv[1],argv[2],NULL);
return 1;
}


I get the following
[cda@localhost ~]$...