Over the past year or so my production platform has been plagued by an odd TCP/IP issue. I've spent zillions of hours working with competent & knowledgeable sysadmins, scouring the net, reading source code, been jerked around by RH's pathetic support, and crying tears of blood! To no avail. (Google 'unkn-4' and you'll see many posts w...
Hello, I know it is not recommended, but is it at all possible to pass the users password to scp? I'd like to copy a file via scp as part of a batch job and the receiving server does of course need a password (no, I cannot easily change that to key-based authentication). TIA Argelbargel ...
I'd like to know which libraries are used by executables on my system. More specifically, I'd like to rank which libraries are used the most, along with the binaries that use them. How can I do this? ...
Is there a good library to use for gathering user input in Linux from the mouse/keyboard/joystick that doesn't force you to create a visible window to do so? SDL lets you get user input in a reasonable way, but seems to force you to create a window, which is troublesome if you have abstracted control so the control machine doesn't have ...
I'm running some JMeter tests against a Java process to determine how responsive a web application is under load (500+ users). JMeter will give the response time for each web request, and I've written a script to ping the Tomcat Manager every X seconds which will get me the current size of the JVM heap. I'd like to collect stats on the ...
So I'm running PPP under linux with a cellular modem. The program I'm writing needs to know if the link is active before sending any data. What are my options to check if the link is available if it routes to a server I control (it doesn't go to the internet as I said earlier) Also, what is the best way to restart it - I'd like to ...
Hello, I have a ARM11 based hardware board which runs a Linux kernel ver. 2.6.21.5-cfs-v19. I have my application running on this ARM-LINUX board. To do sourlce level debugging, of my application i used to use gdb from command prompt of the linux board, that was with some earlier version of the board linux version. With this version ...
I need a way to determine the space remaining on a disk volume using python on linux, Windows and OS X. I'm currently parsing the output of the various system calls (df, dir) to accomplish this - is there a better way? ...
I like Subclipse when working within eclipse, but would like to find something better when working on files outside of Eclipse. I'm currently using RapidSVN. Is there anything better? ...
I need to test a serial port application on Linux, however, my test machine only has one serial port. Is there a way to add a virtual serial port to Linux and test my application by emulating a device through a shell or script? Note: I cannot remap the port, it hard coded on ttys2 and I need to test the application as it is written. ...
We are working with an oracle database in which the person that set it up is "long gone" and thus do not know the sysdba password, but need it. We have root access to the box (its on linux). Is there any way to recover or change the sys passwords? ...
I'm working on a .net post-commit hook to feed data into OnTime via their Soap SDK. My hook works on Windows fine, but on our production RHEL4 subversion server, it won't work when called from a shell script. #!/bin/sh /usr/bin/mono $1/hooks/post-commit.exe "$@" When I execute it with parameters from the command line, it works proper...
I have a windows laptop (thinkpad) and somewhat recently rediscovered emacs and the benefit that all those wacky shortcuts can be when the arrow keys are located somewhere near you right armpit. I was discouraged after php-mode, css-mode, etc, under mmm-mode was inconsistent, buggy, and refused to properly interpret some of my files. (I...
Is there a way to have Linux read ahead when cloning a disk? I use the program named "dd" to clone disks. The last time I did this it seemed as though the OS was reading then writing but never at the same time. Ideally, the destination disk would be constantly writing without waiting that's of course if the source disk can keep up. U...
I have a class in system-C with some data members as such: long double x[8]; I'm initializing it in the construction like this: for (i = 0; i < 8; ++i) { x[i] = 0; } But the first time I use it in my code I have garbage there. Because of the way the system is built I can't connect a debugger easily. Are there any methods to...
Hello, I'm trying to write a small class library for a C++ course. I was wondering if it was possible to define a set of classes in my shared object and then using them directly in my main program that demos the library. Are there any tricks involved? I remember reading this long ago (before I started really programming) that C++ classe...
No matter what I do I cannot get the resolution past 800x600. If I am using a Windows install in VirtualBox, I can get it to 1024x768. What is limiting me from doing this in Linux? ...
We're planning to set up a XEN virtualization server using Ubuntu. I'm looking for any recommendations with regard to what to watch out for when buying hardware for the system. Some information about our planned usage of the system: The server is going to host 4 or 5 instances of a Linux/Apache/MySQL/J2EE stack. Each of those instances...
I have a core dump file from a process that has probably a file descriptor leak (it opens files and sockets but apparently sometimes forgets to close some of them). Is there a way to find out which files and sockets the process had opened before crashing? I can't easily reproduce the crash, so analyzing the core file seems to be the only...
Hello, I'm developing a multi-threaded app for a Linux embedded platform. At the moment I'm setting the stack size for each thread (via pthread_set_attr) to a fairly large default value. I would like to fine tune that value for each thread to something smaller to reduce my application's memory usage. I could go through the trial and er...