linux

Linux - Want To Check For Possible Duplicate Directories (Probably RegEx Needed)

Hi, I have a directory which contains several directories as follows: /Music/ /Music/JoeBlogs-Back_In_Black-1980 /Music/JoeBlogs-Back_In_Black-(Remastered)-2003 /Music/JoeBlogs-Back_In_Black-(ReIssue)-1987 /Music/JoeBlogs-Thunder_Man-1947 I want a script to go through and tell me when there are 'possible' duplicates, in the example ...

Tracing UNIX signal origins?

If I have a process that receives signals from other processes, is there a way for me to somehow tell which process (if any) sent a signal? strace lets me trace which signals a process has received, but doesn't allow me to trace who issued them. ...

How can I figure out why cURL is hanging and unresponsive?

I am trying to track down an issue with a cURL call in PHP. It works fine in our test environment, but not in our production environment. When I try to execute the cURL function, it just hangs and never ever responds. I have tried making a cURL connection from the command line and the same thing happens. I'm wondering if cURL logs ...

Linux 2.6.31 Scheduler and Multithreaded Jobs

I run massively parallel scientific computing jobs on a shared Linux computer with 24 cores. Most of the time my jobs are capable of scaling to 24 cores when nothing else is running on this computer. However, it seems like when even one single-threaded job that isn't mine is running, my 24-thread jobs (which I set for high nice values)...

Build Process failed with maven package

Hi I am working on a maven project to build a simple utility api. The same source code when build on my office win XP machine, was successful. Now i am at home and working with same source code on CentOS machine. Here the build process failed strangely. The error it reports is ideally in my points should we warning message. As shown be...

Capturing network traffic on Linux

Question: I have one Windows laptop, one Linux laptop and a wireless router. Now I want to "investigate" the hotmail/windows live protocol. What I want to do is route network traffic from the windows laptop via ethernet to the linux laptop, capture it on the Linux computer, forward it wirelessly to the router, receive the hotmail respon...

ffmpeg: create a video from images

Is it possible to use ffmpeg create a video from a set of sequences, where the number does not start from zero? For example, I have some images [test_100.jpg, test_101.jpg, test_102.jpg, ..., test_200.jpg], and I want to convert them to a video. I tried the following command, but it didn't work (it seems the number should start from zer...

error : [0.8879153] kernel panic -not syncing VFS unable to mount fs unknow block (8.3)

hello i installed ubuntu using wubit inside the windows and started working on it then i got this error afer updating [0.8879153] kernel panic -not syncing VFS unable to mount fs unknow block (8.3) and i can't user rescue mode and it's give me another error no filesystem could mount root ..... i looked at grub folder and didn' fi...

How to track the memory usage in C++

Hi I have a C++ program running under linux. Is it possible to track its memory usage from the code? I am allocating new objects and running out of memory, so I want to keep track of how quickly I am using memory. Thanks ...

How to use linux csplit to chop up massive XML file?

Hi everyone, I have a gigantic (4GB) XML file that I am currently breaking into chunks with linux "split" function (every 25,000 lines - not by bytes). This usually works great (I end up with about 50 files), except some of the data descriptions have line breaks, and so frequently the chunk files do not have the proper closing tags - an...

C functions invoked as threads - Linux userland program

I'm writing a linux daemon in C which gets values from an ADC by SPI interface (ioctl). The SPI (spidev - userland) seems to be a bit unstable and freezes the daemon at random times. I need to have some better control of the calls to the functions getting the values, and I was thinking of making it as a thread which I could wait for to ...

How can I setup my Netbeans IDE for making Jave ME applications?

Ok, I have Netbeans 6.7.1 installed with the default Java SDK. I'm using Linux Mint. Now I'm told that I have to download Java Platform Micro Edition Software Development Kit 3.0 So, should I download this? And once I download and install this in Linux, what do I have to install for Netbeans so I can create a Mobile Application? I'm fa...

How to extract block of XML from a log file on Linux

I have a log file that looks like the following: 2010-05-12 12:23:45 Some sort of log entry 2010-05-12 01:45:12 Request XML: <RootTag> <Element>Value</Element> <Element>Another Value</Element> </RootTag> 2010-05-12 01:45:32 Response XML: <ResponseRoot> <Element>Value</Element> </ResponseRoot> 2010-05-12 01:45:49 Another log entry What...

Is there a reasonable way to attach new path to PATH in bashrc?

Guys I constantly need to attach new paths to the PATH environment variable in .bashrc, like below: export PATH=/usr/local/bin:$PATH Then to make it take effect, I always do 'source ~/.bashrc' or '. ~/.bashrc', while I found one shortcoming of doing so which make me uncomfortable. If I keep doing so, the PATH will getting longer and lon...

How to detect pending system shutdown on Linux?

Hi, I am working on an app where I need to detect system shutdown. However, I have not found any reliable way get a notification on this event. I know that on shutdown, my app will receive a SIGTERM signal followed by a SIGKILL. What I want to know is if there is someway to query if a SIGTERM is part of a shutdown sequence? Does any one ...

How can I port a closed-source application based on OS X to Linux?

How can I port an application based on OS X to Linux? It is closed source and working in Windows either. It is not wrriten in Objective C and doesn't use Cocoa. Thank you. ...

Pointing symbol-file folder for gdb

You can point a single symbol file to gdb with command symbol-file /usr/lib/debug/symbolfile.so But how to tell gdb to load all symbol-files from given path including subdirectories? ...

ImageMagick bash script issue

// This works convert ${path}${dst} -crop ${crop} ${path}${dst} // but when changed to this, it fails convert ${path}${src} -trim ${path}${dst} convert ${path}${dst} -crop ${crop} ${path}"pdf_"${dst} What am I doing wrong? ...

How to make the debugged app find shared libraries when invoked in gdb inside Eclipse CDT?

I'm trying to debug Firefox trunk inside Eclipse CDT on Linux x86_64 (Ubuntu Karmic). I have done the following: I have made a path mapping from / to / per DevMo in the Source pane of the project-level Run/Debug config. I have set /opt/Projects/obj-debug/dist/bin/firefox-bin as the C++ app in the Main pane. (My Firefox obj dir is /opt...

Simple POSIX threads question

Hi, I have this POSIX thread: void subthread(void) { while(!quit_thread) { // do something ... // don't waste cpu cycles if(!quit_thread) usleep(500); } // free resources ... // tell main thread we're done quit_thread = FALSE; } Now I want to terminate subthread() from my main thread. I've tried th...