- Node file monitor how to#
- Node file monitor install#
- Node file monitor update#
filename: As the name suggests, this takes a string or buffer input for the filename. eventType: This is a string value that specifies the different types of modification on the file. listener: This is a string value that specifies the character encoding that uses the filename which is passed to the listener. encoding: This is a string value that specifies the character encoding that needs to be used for passing the filename to the user. recursive: This is a boolean value that specifies whether the subdirectories of the given directory should be watched or not. persistent: This is a boolean value that specifies whether the process should continue or not while the file is being watched. options: This is a string or an object that is used for modifying the behavior of the method. filename: This is a string, buffer, or a URL that represents the name of the file (Directory in fs.watch()) that is to be watched. Parameters: The above method accepts 3 parameters which are explained below: It contains a callback listener that always listens to the file and informs of any changes.įs.watchFile() fs.watchFile(filename, listener) The fs.watchFile() method continuously watches for any changes in the given file. This method returns a Watcher object that is basically used for tracking any changes in the file.įs.watch() fs.watch( filename ) This regularly watches for any changes to the file in the given directory. The fs.watch() is an inbuilt application programming interface method provided by the fs module. The difference between the two is fs.watch() method can watch both files and the directories whereas the fs.watchFile is only designed for watching any changes in the file. Node file monitor how to#
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Node file monitor install#
How to install the previous version of node.js and npm ?. pm2-server-monit is a PM2 module to automatically monitor key aspects of your server such as CPU average usage, free and used drive space, free and used memory space, all processes running, TTY/SSH opened, the total number of open files, as well as network speed (input and output). Difference between Fetch and Axios.js for making http requests Monitoring Your Server Resources Using pm2-server-monit. Node file monitor update#
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*Let's extend events.EventEmitter in order to be ableĬlass Watcher extends events. Just for fun and excercise I wrote the watcher both in ES5 and ES6.ĮS6 version: const events = require("events"), It is a great way to understand how listeners and callbacks interact to each other and how to work with asynchronous logic! In this article I am going to explain how to create a file watcher in Node.js that constantly check a source folder content file and moves the content in a destination folder lowering case the name.
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