How do I set or change Linux system password for any user account?

Both Linux and UNIX use the passwd command to change user password. The passwd is used to update a user’s authentication token (password) stored in shadow file.

The passwd changes passwords for user and group accounts. A normal user … Read more

How to switch between users on one terminal?

You could use the “su” command.

$ whoami
$ su - user2
$ whoami
$ exit

If you want to log in as root, there’s no need to specify username:

$ whoami
$ su -
Read more

Linux and Unix chmod command

About chmod

chmod is used to change the permissions of filesor directories.


On Linux and other Unix-like operating systems, there is a set of rules for each file which defines who can access that file, … Read more


screenshot-2016-11-16-at-12-45-52-pmIt looks like the Chrome OS developers are sneaking updates for the Play Store into more Chromebooks. Likely added in the latest Beta Channel update, we are seeing multiple devices with Android App support in Beta via a quick little … Read more

How to Enable Developer Mode on Your Chromebook

Put your Chromebook into “Developer Mode” and you’ll get full root access, including the ability to modify your Chromebook’s system files. This is often used to install a full Linux system with something like Crouton.

Developer Mode has other … Read more

Chromebooks that can run Android apps from Google Play

Android — and 1,000,000+ apps — on your Chromebook is awesome.

But not every Chromebook is going to get updated to have Google Play and Android apps. And most of the ones that will are in a long testing process.… Read more

10+ Commands Included In Chrome OS’s Hidden Crosh Shell


Google’s Chrome OS includes a shell environment known as Chrome Shell, or “crosh” for short. Crosh includes several terminal commands that can be used on all Chromebooks, even if developer mode isn’t enabled.

Crosh includes commands for connecting to SSH … Read more

How to Flush DNS Cache in Mac OS X EI Capitan: 10.11, 10.10.4

Most useful way if you’re a network administrator, Server administrator or web developer. And you’re working with Mac OS X machine likely MacBook Pro, MacBook Air, iMac or Mac Mini. Furthermore each version of Mac OS X has different- different … Read more