I'm implementing an FTP-like protocol in Linux kernel 2.4 (homework), and I was under the impression that if a file is open for writing any subsequent attempt to open it by another thread should fail, until I actually tried it and discovered it goes through. How do I prevent this from happening? PS: I'm using open() to open the file....
I'm looking for a good Ubuntu OpenGL tutorial for a friend who already knows how to use OpenGL in Windows. Can anyone recommend any? ...
I just installed Ubuntu on my Virtualbox on Windows. I was trying to install cmake and the installation guide in the cmake website asked me to do the following steps ./bootstrap make make install But when I just did the ./bootstrap command I get the following list of errors, can anyone suggest me how I can set the C++ compiler on my...
$whois abc.com I want to use python to hit this command, and then give the result as a String of text. How can I do that? ...
So when I create a debian package, I am able to write a post-installation shell script that runs just fine. Currently mine is configured to do echo "Please enter your MySQL Database user (default root)" read MYSQL_USER echo "Please enter the MySQL Database user password (default root)" read -s MYSQL_PASS DBEXIST=0 CMD="cre...
I'm Working in an embedded linux environment. it launches a telnet daemon on startup which watches on a particular port and launches a program when a connection is received. i.e. telnetd -l /usr/local/bin/PROGA -p 1234 PROGA - will output some data at irregular intervals. When it is not outputting data, every X period of time it se...
I am new to TCL and I wanted to know, if I can get the command history by using cursor key (like up arrow key) in TCL shell (tclsh). I am running tclsh on fedora with linux version 2.6.21. ...
Hi, I am using Linux as my programming platform and C language as my programming language. My problem is, I define a structure in my main source file( main.c): struct test_st { int state; int status; }; So I want this structure to use in my other source file(e.g. othersrc.). Is it possible to use this structure in another sour...
Hey guys I have one php exec command that works on my remote linux server but not my windows (WAMP package) local server. I really want to create an identical workstation so I can test locally and then update my remote server. If anyone has any suggestions or solutions other than converting to linux, I would really appreciate it. <?php ...
I am writing a custom disk monitoring/diagnostics app which, among other things, needs to do stuff to SATA disks behind a SAS PCI card under Linux. So far I am following this guide as well as the example code in sg_utils to pass ATA taskfiles through the SCSI layer. Seems to be working okay. However, in both cases, the CDB data structur...
I'm writing a shell which forks, with the parent reading the input and the child process parsing and executing it with execvp. pseudocode of main method: do{ pid = fork(); print pid; if (p<0) { error; exit; } if (p>0) { wait for child to finish; read input; } else { call function to parse input; exit; } }while condition return; ...
I just picked up an old project and I'm not sure what the following error could mean. g++ -o BufferedReader.o -c -g -Wall -std=c++0x -I/usr/include/xmms2 -Ijsoncpp/include/json/ -fopenmp -I/usr/include/ImageMagick -I/usr/include/xmms2 -I/usr/include/libvisual-0.4 -D_GNU_SOURCE=1 -D_REENTRANT -I/usr/include/SDL -DQT_CORE_LIB -DQT_GUI_LIB...
I'm creating a tree of folders and files in java. Windows and OSX return the system icons and name with the following code: new JFileChooser().getIcon(File f); new JFileChooser().getName(File f); Is there any possibility to get the icons and name of unix systems?. A system command would be ok too. Thanks. ...
I have created own AMI and registered it on Amazon EC2. But while AMI startup I receive following error: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,1) The image is running locally without any problems. fstab contains: proc /proc proc defaults 0 0 /dev/sda1 /...
I have a daemon writing to a log file that, eventually, fills up the disk. Is there a way for me to periodically limit the size of the log file without stopping the daemon without changing the code in it? SIGHUP kills the daemon. ...
I have a newbie Linux programming question. Suppose I have a project that uses Autotools for compiling and deployment, and I have data files that are to be installed in a location like /var/something or /usr/share/something etc., but in Autoconf, I can change these installation paths. How should the program find these files? How does it ...
I have a list of 350 rpms listed in a text file that are also installed in a cluster that is not online with the outside world. We have an internal yum repository. Is there a way to take the list, and download all the 350 installs for yum to bring back to the cluster? I hate thinking of downloading them one by one. Thanks ...
LD_PRELOAD hooks some functions for the entire process, but I need to hook a particular function for only one dynamically linked library by its name. ...
The following script will take a screenshot on a Gnome desktop. import gtk.gdk w = gtk.gdk.get_default_root_window() sz = w.get_size() pb = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB,False, 8, sz[0], sz[1]) pb = pb.get_from_drawable(w, w.get_colormap(), 0, 0, 0, 0, sz[0], sz[1]) if (pb != None): pb.save("screenshot.png", "png") prin...
For example, i want a file has permission of 644 automatically when i uploaded it to my linux host, before upload, it is under windows. How could i do this? Btw, i use Filezilla for upload Updated: Before post this question, actually, i ever thought it is impossible too. But, as i has many wordpress sites, i remembered that i never nee...