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HI,

I need to handle SIGUSR2 signal in my application to change the state of the application dynamically. I have implemented the signal handler. However the application is able to catch only one...

Hi,

Consider the output of the following commands:

case1)
-------
# ifconfig -a | grep "UP" | grep uplink0:1
# echo $?

Output is: 0

case2
------
# ifconfig -a | grep "UP" | grep...

Hi,

I need to know what is the right way of handling out of memory conditions. If a program is not able to dynamically allocate memory (new fails), is it right to wait for some amount of time (say...

Following is a very good link to understand tcpdump for beginners.

http://www.aei.ca/~pmatulis/pub/tcpdump.html

I have finally figured out the problem. While compiling we were using some custom made libraries. Now in these libraries somewhere someone had implemented his own version of popen. Our call to popen...

Hi,

I am stuck with a tricky situation in which one of my applications is flooding the network with UDP messages. The architecture of the application is not supposed to do so. Neither is there any...

I have tried copying "line" to another variable and passing it to popen. I have tried printing "line" and the temp variable also. I have even tried printing "line" twice by calling gen_log() also....

I am pretty sure gen_log() is not modifying "line". It is a generic fn. we use in most of our applications for generating error logs. I have tested it. It is not modifying "line".

Agreed that popen cannot modify "line". But somehow that is what is happening. We cannot use printf here as the application is running as a deamon. I have called a function just before and after...

Hi,

I am working on a custom made FTP application. The application is behaving erratically for the "ls" command. Wild card character passed to the "ls" command (like "ls *temp") is giving...

Thanks! My problem is solved.

Can the problem be related to the makefile? The application uses a very complex makefile to compile. Can the problem be due to wrong way of compiling (if there is any such thing)? It uses a lot of...

Sorry, I didn't get time to look into the real issue.

After putting some debugging logs I found that popen is throwing "Bad file number" error on the first call with "/bin/ls -l" as the argument....

The problem is not supposed to be with popen. popen is a standard function and I do not think that it will modify the value of "line". It must be getting modified somewhere else somehow. The value...

It seems I have found where the problem is. The problem is not with the assignment statement as stated above. It is in a call to popen. After calling popen as

fin = popen (line, "r");

the...

the above code is working if I copy paste it and then compile it. However in my application there is one more line after the call to sprintf

name = line;

the value are ok before this line. only...

********************************
Following is not the real issue. The issue is with popen.
Plz continue forward with the thread to get a better picture.
********************************

Hi,
...

Hi,

I need to get the console window size for an application, for which I used ioctl() by passing the TIOCGWINSZ parameter. The ioctl() function does not fail (returns non zero), but it could not...