Having access to Ubuntu manual pages (man pages) on your server is an essential asset with which to be familiar. Most Linux-based OS distributions include the man command out of the box. In those cases, there is not much needed. On the other hand, installations that do not have man pages are just a quick command away from having them.
Although Linux is considered a robust operating system with very few issues with applications, programs sometimes become unresponsive. When this happens, they can consume plenty of system resources or take down the entire system. Usually, these applications cannot be restarted automatically.
A pipe is a form of redirection in Linux used to connect the STDOUT of one command into the STDIN of a second command. It allows us to narrow the output of a string of commands until we have an easily digestible amount of data. The pipe character is the | symbol and is placed between any two commands. Pipes are one of the most used command-line features that Linux has. Every article showing Linux commands will almost inevitably include pipes.
One of the most popular command-line utilities is the find command, mainly because of its simplicity and versatility. It's the default option to search for files across multiple UNIX based systems with a wide range of parameters and variables to narrow down our searches. It helps look for files matching a specific name, date, size, or even owner to provide a frame to append other commands to the list of files found. The basic structure of the find command is as follows.
Knowing your server's IP address(s) can be useful information to have for various reasons. After all, other than your domain, the server's IP is the main address used to reach the server. Knowing a server's IPs may be necessary when making changes to: DNS, networking, and security. A server may have a single IP, or multiple IPs, but sometimes, you may need a quick method to double-check since it's easy to forget.
In this tutorial, we discuss the Apache .htaccess file and the many ways it can be modified and configured to suit your specific needs. We will be reviewing how to configure .htaccess redirects, rewrites, and add other customizations.
Let's say you have decided to change domain names or have one web address on your site that you want to redirect to a completely different location. Using a .htaccess redirects, you can send visitors to the new page or site automatically!
Just as regular visitors reach our server every day, so do others with more nefarious intentions. It is simply not reasonable to run an online service without some layer of protection. To protect against some of these attacks, Ubuntu ships with ufw (Uncomplicated Firewall). This is a tool designed to make Ubuntu firewall management as easy and user-friendly as possible. Specifically, ufw provides a cleaner interface for the core firewall tools netfilter and iptables, which, while robust, can be challenging to master.
ArangoDB is a high availability and scalable multi-model NoSQL database that natively works with graphs and documents and includes a full-text search. It is a free, open-source software developed and maintained by ArangoDB GmbH. The system supports three different data models with one database core and includes a unified query language called AQL (ArangoDB Query Language). This query language is declarative and allows the combination of different data access patterns in a single query. The software can be implemented on multiple systems, including Windows, macOS, Linux, Kubernetes, Docker, and on our Managed Cloud. It has a strong community support base on GitHub, StackOverflow, Google Groups, and Slack.
Bashtop is a command-line based resource monitor written in bash, which depicts usage and statistics for the CPU processor(s), RAM, hard disks, network sources, and other running processes. It also contains a customizable menu and a fully responsive terminal user interface.