Setup mail forwarding in postfix on Ubuntu or Debian

Postfix mail forwarding Postfix is a commonly used MTA (Mail Transfer Agent) program that can receive, deliver or route emails. So if you have your own domain and a server then using postfix you can setup emails on the domain like [email protected] Setting up a full featured mail server with postfix is a lengthy process requiring quite some effort. Furthermore, using ...

6 quick tools to monitor system resources on Linux

Monitor server resources System administrators need to monitor their server to ensure proper functioning. The practice enables administrators to detect possible issues in advance and recover the system, before it causes any trouble. There are plenty of commands on Linux to monitor different system resources like cpu usage, memory usage, network, disk usage and so on. Popular ones are top, htop, iostat, ...

8 commands to check cpu information on Linux

CPU hardware information The cpu information includes details about the processor, like the architecture, vendor name, model, number of cores, speed of each core etc. There are quite a few commands on linux to get those details about the cpu hardware, and here is a brief about some of the commands. 1. /proc/cpuinfo The /proc/cpuinfo file contains details about individual cpu cores. Output ...

12 scp command examples to transfer files on Linux

Secure copy Scp (Secure Copy) is a command line tool to copy or transfer files across hosts. It uses the same kind of security mechanism like the ssh program. Infact it uses an ssh connection in the background to perform the file transfer. scp refers both to the "protocol" that defines how secure copy should work and the "program" (command) ...

20 amusing Linux commands to have fun with the terminal

The linux terminal is not always dull and boring. There are commands to make it do some funny acts to entertain the user. Here is a small collection of such commands. 1. Cowsay Install cowsay with apt. $ sudo apt-get install cowsay Cowsay is a talking cow that will speak out anything you want it to. $ cowsay "Hi, How are you" ...

Saidar is a simple system monitoring tool for Linux

Saidar For a system admin, its always exciting to learn new commands to monitor system resources, and here is a new one. Its called Saidar and is a very small tool. Even simpler than and . It displays a small screen full of statistics on a variety of system resources that you might want to monitor. Saidar is a part of ...

Glances gives a quick overview of system usage on Linux

Monitor your Linux system As a Linux sysadmin it feels great power when monitoring system resources like cpu, memory on the commandline. To peek inside the system is a good habit here atleast, because that's one way of driving your Linux system safe. Plenty of tools like Htop, Nmon, Collectl, top and iotop etc help you accomplish the task. Today lets ...

How to setup Virtualbox guest additions on Fedora 20

Fedora 20 (Heisenbug) is currently the latest release and if you want to try it on VirtualBox then install the guest additions for full functionality. Installation is simple and takes a few steps, but involves download and updates which would require some bandwidth. 1. Update Fedora The first thing to do is to upgrade all packages and make the system uptodate. $ sudo yum ...

18 Things to do after installing Fedora 20, the Xfce spin

Fedora with Xfce Dis-preference for Gnome 3 and un-necessity of KDE is the reason why I mostly choose the Xfce desktop when working on or trying out newer or unknown distros. And when working at length, I often tune the desktop to my whims. Xfce is perfect when productivity is high on priority but not at the cost of functionality ...

Collectl is a powerful tool to monitor system resources on Linux

Monitoring system resources Linux system admins often need to monitor system resources like cpu, memory, disk, network etc to make sure that the system is in a good condition. And there are plenty of commands like iotop, top, free, htop, sar etc to do the task. Today we shall take a look at a tool called collectl that can be used ...

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