Headless browsers provide automated control of a web page in an environment similar to popular web browsers, but are executed via a command-line interface or using network communication. They are particularly useful for testing web pages as they are able to render and understand HTML the same way a browser would, including styling elements such as page layout, colour, font selection and execution of JavaScript and AJAX which are usually not available when using other testing methods.

In “gnome-terminal” profile, there is an option “Run command as a login shell”. You can enable/disable it. But what is the difference?

Flat UI colors is a set of beautiful colors for UI. Here is a program which can create a new color profile into “gnome-terminal” to make it use the flat colors in Ubuntu terminal.

From here, here and here.

There are libraries with which you can invoke Google Translate API. For Python, there is “googletrans“; for Node, there is “google-translate-api“.

Like “javadoc“ for Java, Python has “pydoc“ tool which can be used to generate API document.

When running “pip uninstall ppp” to remove a Python pip package, unlike “apt-get remove uuu”, it seems it removes the package only without its useless depending packages, which will leave unused files there. How to improve it?

Every Java programmer knows the short answer(and the easiest one) is to create a class with multiple properties each of which is one value that you want to return in the method, and then you return an instance of this class from the method. But in many cases the returned values is just used one time, in such scenarios creating a class is too heavy and unnecessary. In Python, it’s very elegant to return a tuple in such scenarios. But in Java, what is the most elegant way to do it?

A table in MySQL database which saves the “user_count/shop_user_count” for specific place(“mall_id/floor_id”) and time(“dt”). The table structure is listed below.

Today after running “sudo apt-get update & sudo apt-get dist-upgrade”, the “ca-certificates” package is updated with the following output.