If you were wondering which application is occupying a specific port in your Mac, this tip would help to identify the port and process id and kill the application if required

Instead of using the default terminal app, most of the Mac users use iTerm2 as their choice of terminal. If you are looking for a worthy alternative for iTerm2, then you can try Hyper Terminal

As the default shortcut key for locking a Mac book is Control + Command + Q, to map the Command + L key to lock the Mac, follow the bellow steps

By default, the files and folders in a Mac is not arranged properly like Windows. At times the folders and files may look like overlapping each other

Activity Monitor Tool displays all running applications and processes in a Mac. If you are not able to close a running application, you can use this application to stop or kill an application

pngquant, which is a light weight command line tool that can be used for compressing png images. This is available for all major Operating Systems like Windows, Mac and Linux