How to Add, Remove and Modify Users in Linux
As a Linux administrator, it is essential to know how to add users, modify users and delete users in a Linux system. It is a good practice to have different accounts for different users...
Tagged: linux
cURL Command Tutorial with Examples
cURL is a command line tool and a library which can be used to receive and send data between a client and a server or any two machines connected over the internet. It supports...
How to Kill a Process in Linux
In an operating system, there are many programs, which may be either run by an user or by the OS itself (such as system services). Such programs which are running on the system are...
A Guide to the Linux “Find” Command
The find command allows users to search for files and take actions on them. It is part of the “findutils” package and comes bundled with all distributions. It is highly flexible, allowing you to...
An Introduction to Linux File Permissions
Linux is a multi-user operating system, and it ensures the security of files with the concepts of “ownership” and “permissions”. You can use these concepts to control who can access and modify files. In...
How to Install and Use Glances to Monitor Linux Systems
Monitoring a system is essential for keeping things running smoothly. Glances is a Python-based tool which provides information on various aspects of the system, such as running processes, I/O, memory and so on. It...
A Guide to Monitoring Servers with Nagios
Monitoring is an essential part of managing infrastructure. It helps you to ensure that your business keeps running smoothly, by alerting you to problems as they occur. Nagios is a very popular open-source application...
How to Install and Use Prometheus for Monitoring
Monitoring is an important part of managing applications deployed on servers. They help you ensure applications run smoothly, as well as troubleshoot any problems that may arise. In this article, we will look...
How to Monitor Network Traffic on Linux Using vnStat
Developers and sysadmins may need to monitor various network parameters, such as bandwidth consumption and the traffic flowing in/out. There are many tools available for this purpose, one of them being vnStat. It is...
Building Cross-Distribution Linux Applications with Flatpak
Fragmentation has been a problem for quite some time in the Linux ecosystem. A variety of distributions exist today, with their own package managers and their own notions of what a “base system” consists...
A Guide to the Linux “Top” Command
The top command allows users to monitor processes and system resource usage on Linux. It is one of the most useful tools in a sysadmin’s toolbox, and it comes pre-installed on every distribution. Unlike...
How to Install Gogs, a GitHub-Style Git Remote Service
There are many online services such as GitHub and Bitbucket, which allow users to host Git repositories online. However, when you are working on closed source projects, you may want to use a self-hosted...
Managing Your Linux Server with Webmin
Managing Linux servers can be very difficult at times. It can be very hard for someone who doesn’t have a lot of experience with the command-line tools. In addition, it’s also difficult for administrators...
Creating Linux Apps That Run Anywhere with AppImage
Most Linux distributions allow users to install software by using a package manager. Unfortunately, this system leads to quite a few rough edges. If you’re a user using a “long term support” version of...
An In-Depth Guide to iptables, the Linux Firewall
The Linux kernel comes with a packet filtering framework named netfilter. It allows you to allow, drop and modify traffic leaving in and out of a system. A tool, iptables builds upon this functionality...
A Guide to Using the Caddy Server on Linux
Caddy is a web server that’s extremely easy to configure and use. It provides HTTP/2 support, automatic SSL configuration with Let’s Encrypt, and an intuitive configuration syntax. It is cross-platform, and can run across...
Customizing and coloring the bash prompt
If you’re already not familiar with bash, the prompt is the little blurb of text displayed when it asks for a command. It capable of communicating a lot, but most people don’t use it...
Protecting SSH with Fail2ban
SSH allows you to log in to a remote computer or server and control it through a command-line interface. However, because SSH is exposed to the internet; attackers can try to log in by...
Downloading Torrents over the Web with cloud-torrent
BitTorrent is a peer to peer protocol for sharing files. There are many local clients that allow you to download files via torrents. However, there are times where you may need to download them...
Blocking bad bots with Fail2ban
Fail2ban is a versatile security tool. While it is primarily used for preventing brute-force attacks against SSH, it can also be used for protecting other services. There are bots which go around scanning the...