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• C++ Win/Linux thread syncronization Event

  - by JP

  Hello I have some code that is cross-platform by unsing #ifdef OS, I have a Queue protected by a CriticalSection on Windows, and by a pthread_mutex_t on Linux. I would like to implement a Wait(timeout) call that would block a thread until something has been enqueued. I though about using WaitForSingleObject on windows but it don't seem to support CriticalSection. Which Win32 and which Linux functions should I use to Wait and Signal for a condition to happen. Thank

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• Is there any small linux distribution which comes with a complete C development environment

  - by hits_lucky

  Hi, I have installed "Damn Small Linux" on my home computer for doing C development in unix. But the distribution doesn't by default come with the C development environment and I am facing some issues when trying to install the gcc. Is there any other small Linux distribution which by default has the required packages for the C development. And also I don't want additional software which takes up lot of space but still would like to have the graphical environment. Thanks

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• C++ Programming in Linux Platform

  - by viswanathan

  I am a software engineer and i work in VC++, C++ in WIndows OS. Are there any major differences when it comes to coding in C++ in Linux environment. Or is it just some adjustments that we have to make when we need to code in C++ in Linux.

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• Java File.isDirectory() returns False for a Directory in Linux

  - by shelt536

  Please see code snippet: File[] additionalFiles = new File(FILE_PATH).listFiles(); boolean isDirectory = file.isDirectory(); I have verified that the directory path is correct, and when I run the code on Windows, the value of isDirectory is true (as it should be). Any suggestions as to why this occurs on Linux (RedHat Enterprise Linux)?

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• Learning C++ on Linux or Windows?

  - by ReDAeR

  Hi, Since you 'should' learn C/C++ and as part of 'learn as much languages as possible', i decided to learn C++ in depth. My OS is Windows and my question is should i re-install Linux as a dual boot to learn C++ on Linux? Do i miss something if I develop in C++ only on the Windows platform? (possible duplicate: http://stackoverflow.com/questions/1128050/best-operating-system-for-c-development-and-learning)

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• How can I delete virtual networks from command line?

  - by David Cobb

  I have Hyper-V Server 2008 R2 (without GUI) running at my colo for a week. I was connected via RDP and could use the menu interface and command line. I figured out how to connect Hyper-V Manager from my Win7 laptop (THANK YOU HVREMOTE!), and created and installed my VM. I created a virtual network that didn't work (no connectivity from my VM) so I created another using different settings, and now have lost access to the Hyper-V host. No ping, no RDP. Since I don't have console access, I cannot troubleshoot. I believe if I deleted the Virtual Networks I'd regain access, but I need a command line instruction for this, that the staff onsite could enter to accomplish this. I find no help anywhere obvious (MSDN, etc), the keywords are too general. Can anyone refer me to simple steps how to do this over command line or with the menu based interface on the console?

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• How can I stop new Command Prompt windows spawned by another program from covering my foreground win

  - by Chris W. Rea

  Under Windows 7 x64, when I'm ripping CDs with Exact Audio Copy, it spawns a Command Prompt window each time it invokes the external MP3 compression program I use, LAME. While that's going on, I usually like to surf the web. However, I find it quite annoying that even when Firefox has the foreground, the Command Prompt windows spawned by EAC are coming up in the foreground, on top of my Firefox window. Is there a way to make those new Command Prompt windows spawn in the background? Alternatively, is there a way to make the current active window stay in the foreground / on top while I'm using it?

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• Why does VIM say there is trailing whitespace on this command?

  - by Jesse Atkinson

  I am trying to write a beautify CSS command in vim that sorts and alphabetizes all of the CSS properties as well as checks to see if there is not a space after the colon and inserts one. Here is my code: nnoremap <leader>S :g#\({\n\)\@<=#.,/}/sort | %s/:\(\S\)/: \1/g<CR> :command! SortCSSBraceContents :g#\({\n\)\@<=#.,/}/sort | %s/:\(\S\)/: \1/g These work independently. However, I am trying to pipe them into one command. On save VIM says: Error detected while processing /var/home/jesse-atkinson/.vimrc: line 196: E488: Trailing characters Any ideas?

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• Is it possible to add files to the "Wordpress Media Library" using the command line?

  - by Tom

  Wordpress has it's own "Media Library" which is used when you upload images and other media for use in blog posts and pages. The advantage of the media library is that it automatically produces thumbnails of the images and the web interface gives you extra info such as who uploaded the image, which articles use the image, etc. My question is, does anyone have any tips on interacting with the media library via the command line instead of using the Wordpress web interface? For example, any ideas on how to add a image to the media library from the command line? If I copy files to the media library directory (usually .../wp-content/uploads/YYYY/MM/) from the command line they do not show up in the Wordpress dashboard - I guess because there needs to be an associated database entry for the media to be registered with Wordpress.

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• What is the command to use to put your computer to sleep (not hibernate)?

  - by airrick

  I want to put my windows pc (win7) into a sleep state via command line (so i can bind to macro button on keyboard). The power button on the PC is setup to but the computer to sleep (but it's down on the floor and I'm too lazy to reach down) it exactly how I want it (sleeps using hybrid mode in case I loose power) The sleep command on the shutdown menu also works. most info I found says to use; %windir%\system32\rundll32.exe PowrProf.dll, SetSuspendState 0,1,0 But this puts the computer in hibernate mode. I do have hibernate disabled but using hybrid sleep. So, What is the command to use to put your computer to sleep (not hibernate)?

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• How do I create a Windows Batch file that does not show the Command Prompt when executed?

  - by Jake

  I have installed a ruby gem called Redcar, which is launched from the command line. When it runs, it steals the shell until it terminates, so I have to create a new shell window to continue doing command line work. The shell I'm using is the GITBash shell from MySysGit. I found a Redcar.bat file which is meant to launch Redcar as a shortcut, I presume, but I don't want the extra command prompt window to open whenever I launch the BAT file. How do I just run the BAT without seeing the prompt?

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• Zip files way larger on a Mac using Finder than the 'zip' command.. 2x larger.

  - by user33947

  I have a directory of JPEG's. Each one is roughly 90k, as reported by Photoshop when saving, and also reported by the command line function 'ls'.. When I get the properties for the file with Finder, it's double that, over 220k. Zipping it with finder will also package this bulk as well. Doing the "zip -v test.zip ./dir" command will make a MUCH smaller zip file. Zipping the files on windows also results in a much smaller file size as well, roughly the same to that of the unix zip command. File sizes are also reported correctly on windows. I can't find any mention of this anywhere, so I'm asking here.

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• Why does MOVE command in DOS treat wildcard patterns oddly in this case?

  - by Adisak

  I am using the "move" command with a wildcard pattern in the CMD prompt under Windows 7. In my source directory, I have the following files: movie1.avi movie1.avi_metadata movie2.avi movie2.avi_metadata If I type the command move source\*.avi dest it will move all four files even though I would expect it to only move the two *.avi files and not the *.avi_metadata files. As expected, move source\*.a dest and move source\*.av dest don't move any files. However when the length of the extension for the wildcard pattern is 3 characters, it will move all extensions that begin with those first three characters. Is this a bug in the "move" command or expected behavior and is it documented anywhere? Edit: John Watts notes that this is probably do to "short" filenames. Is it possible then to make commands in the CMD interpreter only operate on long filenames and to ignore short filenames?

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• How can I view a .eml file from command line in Windows Vista?

  - by Nosrettap

  Ok, so my parent's computer crashed (horribly - corruptedRegistry) and I'm trying to access one of their e-mail files that is saved locally on the hard drive. I can't launch Windows itself so right now I am in a "bootup command prompt". I've navigated to where the e-mail appear to be stored C:Users\[userName]\AppData\Local\Microsoft\Windows Mail\Local Folders\Inbox and it shows a list of what appear to be the files. The problem is, they are .eml files and I can't seem to be able to open them. I've tried 'vim' and 'vi' commands but it tells me that 'vim is not recognized as an internal or external command. Does anyone know how I can view .eml files from command line? Thanks

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• Can a mapped network drive be reconnected from the command line?

  - by Stephen Jennings

  On a daily basis I find myself in the Windows command prompt needing to access a network drive that is mapped but disconnected. I have yet to find a command that will reconnect this drive without unmapping and remapping (which leads to a password guessing game, since I don't own these computers). I would also like to be able to script this so every night the drive is reconnected if it has become disconnected somehow. The fastest solution I currently have is to: Type "start." to open explorer, Alt-D to focus the address bar, type the drive letter I want and press enter, and wait for it to display the drive contents, then finally, close explorer and go back to the command prompt. I know it's a minor inconvenience, but I'm often doing this through a slow VNC or PCAnywhere connection where doing anything through GUI is awful, so I'm just wondering if there's a better solution.

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• Is there a win32 command line tabifier that supports ... `read details` (revised)?

  - by user55542

  I use an editor that allows me to type in a command to run. In order to see the output without having to redirect it to a file, I precede the command with "cmd /k," which leaves an open cmd.exe window. So I'd like to find a way to catch the call to cmd.exe and pass it onto an application that tabifies cmd.exe, a terminal emulator as it's called. The desired result would be similar to what happens in a tabbed editor, when that editor is to open some file, it does so in another tab, and not in another window. While in a given situation it may be easier to modify the command to redirect output to display in the editor itself, in general it would be more helpful if I could find a way to catch all such calls into one window.

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• msginit email address command line argument?

  - by C.W.Holeman II

  msginit prompts for an email address. Is there a way to tell msginit what email address to use without being prompted for it such as a command line argument? cat >hellogt.cxx <<EOF // hellogt.cxx #include <libintl.h> #include <locale.h> #include <iostream> int main (){ setlocale(LC_ALL, ""); bindtextdomain("hellogt", "./"); textdomain( "hellogt" ); std::cout << gettext("hello, world!") << std::endl; } EOF g++ -ohellogt hellogt.cxx xgettext -d hellogt -o hellogt.pot hellogt.cxx msginit -l es_MX -o spanish.po -i hellogt.pot

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• Wanted: Command line HTML5 beautifier

  - by blinry

  Wanted A command line HTML5 beautifier running under Linux. Input Garbled, ugly HTML5 code. Possibly the result of multiple templates. You don't love it, it doesn't love you. Output Pure beauty. The code is nicely indented, has enough line breaks, cares for it's whitespace. Rather than viewing it in a webbrowser, you would like to display the code on your website directly. Suspects tidy does too much (heck, it alters my doctype!), and it doesn't work well with HTML5. Maybe there is a way to make it cooperate and not alter anything? vim does too little. It only indents. I want the program to add and remove line breaks, and to play with the whitespace inside of tags. DEAD OR ALIVE!

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• Show last command with up arrow on a linux c shell

  - by nunos

  I have implemented a simple linux shell in c. Now, I am adding some features and one I immediately thought about was to be able to show the last commands with the up arrow. Question 1: However, I have no idea how to accomplish this. Do you? Question 2: Any comment on how to store the "history" commands are also appreciated. I suppose something like a queue which allows access to all elements would be a good idea. Am I wrong? Do I have to implement it or is there already some good implementation out there I should know about? Thanks.

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• How send html mail using linux command line

  - by Diesel Draft

  Hi, I need send mail with html format. I have only linux comand line and command "mail". Currently have used: echo "To: [email protected]" > /var/www/report.csv echo "Subject: Subject" >> /var/www/report.csv echo "Content-Type: text/html; charset=\"us-ascii\"" >> /var/www/report.csv echo "<html>" >> /var/www/report.csv mysql -u ***** -p***** -H -e "select * from users LIMIT 20" dev >> /var/www/report.csv echo "</html>" >> /var/www/report.csv mail -s "Built notification" [email protected] < /var/www/report.csv But in my mail-agent i get only plain/text.

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• problem in reading output of dd command using pipe

  - by Ummar

  I am developing an application, in which I want to redirect the output (progress information) of dd command to my C++ program, but it is not actually getting the output, here is the code FILE * progressInfo = popen("gzip -dc backup/backup.img.gz | pv -ptrbe -i 2 -s 2339876653 | dd of=/dev/sdb","r"); if(!progressInfo) { return -1; } char buf[1024]; while(fgets(buff, sizeof(buff),progressInfo)!=NULL) { std::cout << buff << endl; } but the problem is the progress information is not received in buff, and the output is continuously printed on terminal, and above program halts on while(fgets(buff, sizeof(buff),progressInfo)!=NULL), and as soon as the dd operation is completed, the very next line to loop block is executed. if anyone has any idea why the output is not returned to buff, and its continuously retuned on terminal?

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• pthreads recursively calling system command and segfault appears

  - by jess

  I have a code base where i am creating 8 threads and each thread just calls system command to display date in a continuous cycle, as shown below: void * system_thread(void *arg) { int cpu = (int)arg; printf("thread : start %d\n", cpu); for (;;) { // date ã³ãã³ãã®å®è¡ if (mode == 0) { system("date"); } else { f_hfp_nlc_Fsystem("date"); } } sleep(timerval); return NULL; } This application segfaults after running for 2-3 seconds, due to following 2 reasons: 1. read access, where the address is out of VM area 2. write acces, where it does not of write permission and its trying to modify some structure.

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• Replacing whitespace with sed in a CSV (to use w/ postgres copy command)

  - by Wells

  I iterate through a collection of CSV files in bash, running: iconv --from-code=ISO-8859-1 --to-code=UTF-8 ${FILE} | \ sed -e 's/\"//g' | \ sed -e 's/, /,/g' \ > ${FILE}.utf8 Running iconv to fix UTF-8 characters, then the first sed call removes the double quote characters, and the final sed call is supposed to remove leading and trailing whitespace around the commas. HOWEVER, I still have a line like this in the saved file: FALSE,,,, 2.40,, The COPY command in postgres is kind of dumb, so it thinks " 2.40" is not valid syntax for a numeric value. Where am I going wrong w/ my processing of the CSV file? Thanks!

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• stream output of a command continuously run in php

  - by chandan kharbanda

  i am running this simple command { ./a.out < in; } & output.txt using exec and i want to output what's coming in output.txt through ajax request continuously. Also i want a way to turn off my output buffering.I tried flush() and ob functions but didn't succedded.In my /etc/php5/apache2/php.ini php.ini value of output_buffering = 4096.When I change it to Off and restart my apache2 server it fails to restart.P.S. I am using lamp server.

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• Personalize Diff Command in Ubuntu

  - by acidboy

  I have two files, both with a lot of data, what I need is compare the first word of each file (each file always starts with a number, and each number could have many digits). The files are identical when these numbers are the same. Example: I have 3 files: a.txt, b.txt and c.txt a.txt content is "1 a b c 3 5 6 hjkj" b.txt content is "1 c f a 1234 h" c.txt content is "2 a b c 3 5 6 hjkj" diff a.txt b.txt should return "files are identical" diff a.txt c.txt should return "files are different" How can I compare them using the diff command?

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