The wc command on Linux is short for word count. It’s a simple tool that does exactly as its name would imply: count the number of words in a file. It can also count similar things, like the number of characters in a file, the number of lines, and the number of bytes.
Most of the time as a Linux system administrator you are managing your servers over the network. It is very rare that you will need to have a physical access to any of your managed servers. In most cases all you need is to SSH remotely to do your administration tasks. In this article we will configure a GUI alternative to a remote access to your RHEL server, which is VNC. VNC allows you to open a remote GUI session to your server and thus providing you with a full graphical interface accessible from any remote location.
In this tutorial you will learn:
- How to install required VNC packages
- How to setup and start the VNC server on RHEL
- How to connect to a graphical session remotely
- How to run graphical programs in the xterm session
The kernel of a Linux system is the core that everything else in the operating system relies on. The functionality of the kernel can be extended by adding modules to it by use of a specific Linux kernel commands. As such, a user can fine tune their kernel settings by enabling or disabling modules. This level of granular control is one of the many reasons why users love Linux in the first place.
PyCharm is a graphical IDE (integrated development environment) that can be installed on Ubuntu Desktop. Many Python programmers enjoy using PyCharm because it can be used to analyze code, debug programs, and is integrated with Git and other version control systems, as well as web development applications. PyCharm is developed by JetBrains. It is free and open source, or at least the community edition is.
The Nvidia CUDA toolkit is an extension of the GPU parallel computing platform and programming model. The Nvidia CUDA installation consists of inclusion of the official Nvidia CUDA repository followed by the installation of relevant meta package and configuring path the the executable CUDA binaries. In this tutorial, you will see how to install CUDA on Ubuntu 20.04 Focal Fossa Linux.
Steam is easily the most popular PC gaming client, and with hundreds of titles available for Linux, it is no wonder why Linux gamers would want to install Steam on Ubuntu. Valve, the company behind Steam, officially targets Ubuntu and Debian with their Linux support, which is great news for Ubuntu users.
The default Ubuntu firewall is ufw, which is an acronym for “uncomplicated firewall.” It comes automatically installed on all editions of Ubuntu Desktop and Ubuntu Server. Ufw is a frontend for the typical Linux iptables commands, but it is developed in such a way that basic firewall tasks can be performed without the knowledge of iptables. You may find you need to disable ufw if it is blocking some necessary connections, or you can enable it for increased security.
GNOME is the default desktop environment for Ubuntu 20.04. If you don’t yet have a desktop environment installed, or have a different environment and would like to switch to GNOME, it’s very easy to do.
It’s possible to reset Kali Linux password in the event that you are no longer able to login to the root user account. This happens if you haven’t logged in for a while and have since forgot Kali Linux password. In case you have not already tried, the default Kali password for root user is
toor (root backwards) on VMWare and live images. Try logging in with this password before resetting the Kali Linux password.