watch | 易学教程

linux - watch a directory for new files, then run a script

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问题 I want to watch a directory in Ubuntu 14.04, and when a new file is created in this directory, run a script. specifically I have security cameras that upload via FTP captured video when they detect motion. I want to run a script on this FTP server so when new files are created, they get mirrored (uploaded) to a cloud storage service immediately, which is done via a script I've already written. I found iWatch which lets me do this (http://iwatch.sourceforge.net/index.html) - the problem I am

How can I stop execution in the Visual Studio Debugger when a private member variable changes value?

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问题 Let's say my class has a private integer variable called count. I've already hit a breakpoint in my code. Now before I press continue, I want to make it so the debugger will stop anytime count gets a new value assigned to it. Besides promoting count to a field and setting a breakpoint on the set method of the field, is there any other way to do this? 回答1: What you're looking for is not possible in managed code. In C++ this is known as data break point. It allows you to break whenever a block

How to get an object that was changed in angularjs?

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问题 I use this function to watch an array of objects for changes: $scope.$watch('Data', function (newVal) { /*...*/ }, true); How can I get an object in which property has been changed so that I can push it in an array? For example: var myApp = angular.module("myApp", []); myApp.factory("Data", function(){ var Data = [{id:1, property: "Random"}, {id:2, property: "Random again"}]; return Data; }); var myBigArray = []; function tableCtrl($scope, Data){ $scope.TheData = Data; $scope.$watch("TheData"

Node.js monitor file for changes and parse them

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问题 I need to monitor a file for changes. Due to a large amount of new entries to this file I would need to 'monitor' this file. I would need to get the new inserted content to this file to be able to parse this content. I found this code: fs.watchFile('var/log/query.log', function() { console.log('File Changed ...'); //how to get the new line which is now inserted? }); 回答1: On bash you would do something like that with tail --follow . There is also a package tail availible. you can watch on a

Understanding Watch window in VisualStudio 2010

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I cannot understand what the part of the object within square bracket means ( [bsm::Material] see pic below ). I would expect the object ml of type MaterialLayer to be composed only of a part of type Object (base class) + two fields thickness and material (a pointer to Material). So, what is the part between square brackets, shown by Visual Studio 2010 in its Watch window? Here is the definition of the Material, Object, and MaterialLayer classes: class Object { public: // Methods }; class Material : public Object { int type; std::string name; std::vector<Property *> properties; public: //

Keeping my WatchKit complications up to date when not running

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问题 I'm working on the WatchKit Extension of my app, and have some issues with complications. I have a complication that displays a given total amount, which depends of what the user is doing on the iOS app. When the WatchKit Extension is running, the iOS app updates the watch app context using the -[WCSession updateApplicationContext:] method. It works fine, and then in the ExtensionDelegate of my Watch app, I manually update the complication with the new data. But this is OK only when the

javascript, gulp, watch, changed

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问题 I cannot get my head around this. This is supposed to be a gulp task that is executed every time a watched file is modified. Can anyone explain why it is required to pipe the watched files through the changed plugin? gulp.task('build-css', function () { return gulp.src(paths.css) .pipe(changed(paths.output, {extension: '.css'})) .pipe(gulp.dest(paths.output)); }); gulp.task('watch', ['serve'], function() { gulp.watch(paths.css, ['build-css']); }); Disclaimer: this is not my code. Just trying

linux - watch a directory for new files, then run a script

阅读更多关于 linux - watch a directory for new files, then run a script

I want to watch a directory in Ubuntu 14.04, and when a new file is created in this directory, run a script. specifically I have security cameras that upload via FTP captured video when they detect motion. I want to run a script on this FTP server so when new files are created, they get mirrored (uploaded) to a cloud storage service immediately, which is done via a script I've already written. I found iWatch which lets me do this ( http://iwatch.sourceforge.net/index.html ) - the problem I am having is that iwatch immediately kicks off the cloud upload script the instant the file is created in

How can I watch for changes to an expression in the Perl debugger?

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With the Perl debugger, I know I can set breakpoints at certain lines of code with the b command. Can I get the debugger to stop as soon as the contents of a variable has changed? You can create watch points using the w command in the Perl debugger. Crash course on the w debugger command: Create a watch-expression by typing w and then an expression that will monitored for changes: DB<1> w $variablename Enter c to continue until the watched expression changes. Once you do, you will get output similar to this: DB<2> c Watchpoint 0: $variablename changed: old value: '' new value: 'hi' main::(ex

How can I stop execution in the Visual Studio Debugger when a private member variable changes value?

阅读更多关于 How can I stop execution in the Visual Studio Debugger when a private member variable changes value?

Let's say my class has a private integer variable called count. I've already hit a breakpoint in my code. Now before I press continue, I want to make it so the debugger will stop anytime count gets a new value assigned to it. Besides promoting count to a field and setting a breakpoint on the set method of the field, is there any other way to do this? What you're looking for is not possible in managed code. In C++ this is known as data break point. It allows you to break whenever a block of memory is altered by the running program. But this is only available in pure native C++ code. A short