How to convert an object to json in Node.js?
How to convert general JavaScript objects to json in Node.js?
Assume jo
is a JavaScript object, you can convert it to a json string by:
JSON.stringify(jo)
How to convert general JavaScript objects to json in Node.js?
Assume jo
is a JavaScript object, you can convert it to a json string by:
JSON.stringify(jo)
What suggested web browser in command line? This will be very useful for browsing the Internet from a command line via SSH. You may use Lynx, a fully-featured World Wide Web (WWW) client for users running cursor-addressable, character-cell display devices, in Linux. Homepage: http://lynx.isc.org/ Lynx is a fully-featured World Wide Web (WWW) client for users…
In Python, how to get the value (string) of an environment variable? In Python, all environment variables can be accessed directly through os.environ import os print os.environ[‘HOME’] If the environment variable is not present, it will raise a KeyError. You can use get to return None if the environment variable is not present: print os.environ.get(‘ENV_MIGHT_EXIST’)…
How to install Scala from the official Scala distribution? This is needed on a Linux release with older version of Scala in the repository, e.g. Fedora 12. Use the install-scala.sh script: # wget https://raw2.github.com/zma/usefulscripts/master/script/install-scala.sh # sh ./install-scala.sh VER where VER is the scala version that you want to install. First step, install and configure the…
What are the Google Chrome keyboard and mouse shortcuts for Linux and Windows? Keyboard shortcuts of Chrome can make it easier to control the browser and save our time. Here are a list of commonly used shortcuts: Ctrl+T Opens a new tab. Press Ctrl and click a link. Or click a link with your middle…
Any GUI tools to crop PDF file margins on Linux? I use krop: http://arminstraub.com/computer/krop krop is a simple graphical tool to crop the pages of PDF files. To install krop on Fedora: # yum install krop Read more: How to merge multiple PDF files to a PDF on Linux? How to use vnc to connect…
I want to change policy of scheduling in Hadoop, how to I can change job order in map reduce automatically. Assume you are using Hadoop 2 / YARN. The configuration parameter named yarn.resourcemanager.scheduler.class controls the class to be used as the resource scheduler for YARN/Hadoop. The default value for the scheduler class (check more at…