command line Here you can find all the posts taged with command line. Adding a user to the sudoers list in Ubuntu Stop using root for administrative tasks. Here is how to add a new user to the sudoers list in Ubuntu. A more powerful version of grep The utility command grep has a more powerful brother that let us use POSIX Extended Regular Expressions. Display disk usage with the du command How to display the total of the current directory or a particular directory, as well as listing subtotals (subdirectories). Hide the desktop icons on Mac OS X A two step way using the defaults command to hide the icons from the desktop in Mac OS X. Display line numbers using the cat command A simple feature you one day may be glad you know. Finding the latest version of an npm package Using the view registry info command to show the latest version available of a package in the node package manager. Create and extract tar archives compressed with gzip For some reason I always find it hard to remember how to create and extract gzipped TAR archives, but here is how to do it.