Need help understanding a bash command
- by user198729
It's actually a combination of php and bash:
exec(sprintf("%s > %s 2>&1 & echo $! >> %s", $cmd, $outputfile, $pidfile));
I don't understand what 2>&1 & echo $! is there for?
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Search found 243 results on 10 pages for 'user198729'.
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What framework is trac based on?
- by user198729
I just downloaded this tracking system and curious what framework this great system uses?Read the article
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How to automate svn and building process?
- by user198729
After we tested the code in repository is OK, how to automate the building process, say, updating the production code with those in svn? If it matters, I'm talking about PHP source code.Read the article
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Is there a bash command to do this?
- by user198729
I want to know if new files/directories have been created in a specific directory A since a fixed date time. Is there a bash command to do this?Read the article
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How to make disconnected contours connected by adding a shortest path using MATLAB?
- by user198729
bwlabel can be used to get disconnected objects in an image: [L Ne] = bwlabel(image); I want to make the objects(But my target is only the contours of these objects) connected by adding a shortest path where necessary. How do I approach this?Read the article
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How to make form remember previous values like SO?
- by user198729
I've noticed that the Title or Body part is remembered if I come back to the Ask Question page by pressing Back button of my browser. How can I approach that effect?Read the article
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Yet another hard algorithm problem in OCR(image pattern recognization)
- by user198729
It's part of the process of OCR,which is : How to segment the sentences into words,and then characters? What's the candidate algorithm for this task?Read the article
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How do I calculate the area under a curve in an image with MATLAB?
- by user198729
The unit of x-axis is hours (h), and there are 24 hours in total. The unit of y-axis is millions (m). How do I calculate the area under the red curve in the image in units of m*h? Important UPDATE Only the image is readily available (not the data), and I want to calculate the area programmatically.Read the article
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Any advice how to implement a character recognizing functionality?
- by user198729
Let the user write/draw a character on the canvas,and recognize it. Seems not so easy,is there an open source project for this?Read the article
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Where are cookies of Firefox stored in windows?
- by user198729
Is there a place to check all the cookies so far?Read the article
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How's Comet implemented?
- by user198729
I wander how do client side get response if the connection of request is not finished yet? What's the principle? In fact I've read quite a few posts on this subject: http://stackoverflow.com/questions/333664/simple-long-polling-example-code http://stackoverflow.com/questions/932415/how-does-the-live-real-time-typing-work-in-google-wave But none of them solve my doubtRead the article
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Where can I get zend_debugger.dll for various versions of PHP(windows)?
- by user198729
I'm having a hard time installing zend_debugger, somehow the installed version doesn't match with my php. Is there a repository for all versions of zend_debugger?Read the article
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What does the two parameters mean for WScript here?
- by user198729
$WshShell = new COM("WScript.Shell"); $oExec = $WshShell->Run($cmd, 0, false); I don't seem to find the document for this...Read the article
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Why closed contours are guaranteed here?
- by user198729
Quoted from here: BW = edge(I,'zerocross',thresh,h) specifies the zero-cross method, using the filter h. thresh is the sensitivity threshold; if the argument is empty ([]), edge chooses the sensitivity threshold automatically. If you specify a threshold of 0, the output image has closed contours, because it includes all the zero crossings in the input image. I don't understand it,can someone elaborate?Read the article
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Is it possible to get id of affected rows in MySQL?
- by user198729
I'm using pdo to do this : update tags set cnt=cnt-1 where name in ? delete from news_tag where news_id=? and tag_id in (select id from tags where name in ?) But if I can get affected rows' id,the subquery is not needed.Read the article
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Save something in javascript?
- by user198729
I saw a page visited by file:///D:/test.html can save files on local file system after I give the permission. How is that kind of magic approached?Read the article
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How do I create a GUI programme most easily in C?
- by user198729
I'm a windows XP user, with not much experience in c developing. What's the best way to create GUI application in C?Read the article
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How to develop a MVC framework from scratch?
- by user198729
View is easy to be separated from MC, but how to separate M and C?The difference seems a little vague to me. I'm using PHP.Read the article
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Does return value of matlab function depends on how it's called?
- by user198729
A = imread(filename, fmt) [X, map] = imread(...) The above is in the synopsis part of imread,which seems to say the return value of matlab function depends on how it's called?Is that true?Read the article
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How to get the absolute path of the file in a function that's called in PHP?
- by user198729
in file.php: call()... How to get absolute path of file.php inside call() ? Pay attention that call() may be defined in another file. another.php: function call(){..} file.php: include(path_to_another.php); call();Read the article
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How do I use some specific dll in c/c++?
- by user198729
Like the msvcr70/msvcr80/msvcr90.dll, what's the code like to instruct the linker to link to one of them dynamically? Or has that anything to do with c/c++,but cmake?Read the article
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Is there any difference between __DIR__ and dirname(__FILE__) in PHP?
- by user198729
It looks the same for me,but I'm not sure, because there are many projects that uses dirname(__FILE__).Read the article
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Which directories does include statement search in C/C++?
- by user198729
test.c: include "file.h"; In the above statement, which directories will be searched ? I suppose the directory where test.c locates will be searched, right? But is that all? BTW, what's the benifit to use a header file? Java doesn't require a header file...Read the article
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How to write such a stored function in MySQL?
- by user198729
The function essentially contains 2 statements: statement1; and statement2; If statement1 fetches some records,just return them as result;If it doesn't fetch any result,return the result of statement2.Read the article
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How to encapsulate the helper functions(commonly used apis) in a OOP language like java?
- by user198729
These functions may be hard to fit into a specific class, what's the best practice to deal with them?Read the article
