linux

Can I use DDD3.3.12 with GDB7.1?

Can I use ddd3.3.12 with gdb7.1? ...

Java taking too much memory on linux vm

Doing a top shows this top - 22:04:27 up 7:47, 3 users, load average: 0.02, 0.08, 0.26 Tasks: 1 total, 0 running, 1 sleeping, 0 stopped, 0 zombie Cpu(s): 2.9% us, 0.9% sy, 0.0% ni, 95.9% id, 0.0% wa, 0.0% hi, 0.2% si Mem: 7914188k total, 2750184k used, 5164004k free, 54392k buffers Swap: 16383992k total, ...

Help in getting Logical address of my system using C++ & Linux

Please suggest how to get the IP address of my system (logical address) using C++ and Linux. Thanks in advance ...

How to use ccache selectively?

I have to compile multiple versions of an app written in C++ and I think to use ccache for speeding up the process. ccache howtos have examples which suggest to create symlinks named gcc, g++ etc and make sure they appear in PATH before the original gcc binaries, so ccache is used instead. So far so good, but I'd like to use ccache onl...

Raising hard limit on RLIMIT_NOFILE system-wide on Linux

We need to raise RLIMIT_NOFILE when running memcached, as we're hitting the default hard limit (1024). However, raising a hard limit requires root, and for various reasons we don't want to have to run memcached or its containing shell as root. Right now we happily run it as a non-root user. Is there a way to raise the hard limit for RLI...

ADO.NET Data Services for MySQL

Hey! I've searched high and low for this, and no luck. Is there a way that CRUD methods for a MySQL install (Linux box) be exposed via ADO.NET WCF Data Services? I would really love to leverage this in my WPF app :) Thank u! EDIT: :D I am aware that it's called Windows Communication Foundation, but just thought I'd put it out the...

Too many open files in one of my java routine.

I have a multithreaded code that has to generated a set of objects and write them to a file. When I run it I sometime get "Too many open files" message in Exception. I have checked the code to make sure that all the file streams are being closed properly. Here is the stack trace. When I do ulimit -a, open files allowed is set to 1024. W...

What the best approach to iterate and "store" files over a directory in C (Linux) ?

I have written a function that checks if to files are duplicates or not. This function signature is: int check_dup_memmap(char *f1_name, char *f2_name) It returns: (-1) - If something went wrong; (0) - If the two files are similar; (+1) - If the two files are different; The next step is to write a function that iterates through a...

Upgrading mysql from 4.1.22 to 5.0

Hi, I'm trying to upgrade our company's 4.1.22 version of MySQL to 5. I'm using sudo yum --enablerepo=centosplus upgrade mysql* but keep getting an error of conflicted files with the 4.1 version. Does that mean there really isn't any other way than uninstalling 4.1 and installing 5.0? I have read that using the yum upgrade command...

strange behaviour of git

Hi, i have strange behaviour of git - push is working, but clone is not :( alec$ git clone git://host/repo.git Initialized empty Git repository in /Users/alec/Temp/repo/.git/ host[0: x.x.x.x]: errno=Connection refused fatal: unable to connect a socket (Connection refused) whats wrong? ...

Automating Excel macro using python

I am using python in Linux to automate an excel. I have finished writing data into excel by using pyexcelerator package. Now comes the real challenge. I have to add another tab to the existing sheet and that tab should contain the macro run in the first tab. All these things should be automated. I Googled a lot and found win32come to d...

On linux, what can cause dlopen to emit SIGFPE?

I have a library of dubious origins which is identified by file as a 32 bit executable. However, when I try to dlopen it on a 32 bit CentOS 4.4 machine, dlopen terminates with SIGFPE. Surely if there was something wrong with the format of the binary then dlopen should be handling an error? So the question is: What kinds of problems ca...

Linux: run an application fullscreen (not in a window)

Hello, I want to run a program in linux without the X borders. It's a c++ program that uses a graphical library called GRX and when it is launched it runs inside a window. Is there any way to "force" an app not to run in windowed mode? An exec, comand or something? Cheers ...

per process configurable core dump directory

Is there a way to configure the directory where core dump files are placed for a specific process? I have a daemon process written in C++ for which I would like to configure the core dump directory. Optionally the filename pattern should be configurable, too. I know about /proc/sys/kernel/core_pattern, however this would change the pat...

How to find out if SCSI device (say /etc/sda) is a disk or not via ioctl calls or other ?

How to find out if SCSI device (say /dev/sda) is a disk or not via ioctl calls or other ? I have tried the following but the ioctl call fails. My /dev/sda is a USB flash disk. #include <stdlib.h> #include <stdio.h> #include <string.h> #include <unistd.h> #include <fcntl.h> #include <errno.h> #include <scsi/scsi.h> #include <scsi/sg.h> #...

CentOS - Convert Each WAV File to MP3/OGG

I am trying to build a script (I'm pretty new to linux scripting) and I can't seem to figure out why I'm not able to run this script. If I keep the header (#!/bin/sh) in, I get the following: -bash: /tmp/ConvertAndUpdate.sh: /bin/sh^M: bad interpreter: No such file or directory If I take it out, I get the following: 'tmp/ConvertAndU...

is it possible to control the windows of an external app

I want to take the control of the window for exmple i want to force to external app to start minimized I mean when i enter this command myapp Firefox Firefox starts but minimized firefox is not important I mean i want to do it with any gui application If yes can any body show me the way? ...

Best environment to port C/C++ code from Linux to Windows.

I'd like to make a big project of mine buildable on Windows platforms. The project itself it's written in C/C++ following POSIX standards, with some library dependencies such as libxml2, libcurl and so on. I'm more a Linux developer rather than a Windows developer, so i have no idea of which compiler suite i should use to port the code. ...

Does anybody know of a USB Postage Scale that's Linux compatible?

I'm looking for a postage scale that already has linux support (drivers, etc) for a shipping system that I'm working on. I'm planning to use Ubuntu 9.04, but I am willing to switch distro's for compatibility. Does anybody know of any scales that currently work? Is there an open source project that's working on scale drivers or similar? ...

Foraward SNMP requests from Agentx Master to Agentx Subagent

I am running an agentx master and an agentx subagent on linux. When I run snmpget on a default MIB i.e. sysdescr.0 it returns fine, but when I request for a MIB that was registered through the agentx subagent it timesout. It appears that the master receives the GET request but does not forward on to the agentx subagent. The MIB is regis...