Our Recent article on CompTIA Linux+ certification got a huge interest among our readers and influenced us to share another Linux certification program that is more attractive and recognized in the industry. Certified Engineer (RHCE) is so far known as the best Linux certification program. This article is all about how you can achieve RHCE certification and move your career further improved as System Administrator.
Linux+ is the quickest way to prove your Linux skill to your employer, if you want to be a Linux expert in future.. Previously the certification was was managed completely by Linux Professional Institute (LPI) and now by The Computing Technology Industry Association (CompTIA). Now the certification is known as CompTIA Linux+ Powered by LPI. This is a high-stakes, vendor-neutral certification that validates the fundamental knowledge and skills required of junior Linux administrators.
In your daily network and system administration work there is often need for checking availability of servers, desktop or network devices. The simplest tool for that purpose is ping tool which is offered on all platforms and devices. When used, ping send defined number of IP packets to IP address of server or other device you want to check for availability and wait for response. If response comes ping is successful and device is available. It is the simplest way to check devices availability. If you want to perform detailed availability check such as time of response or ping with variable packet length ping offers that options but its using becomes more complex. In that moment you can think of new tool that can meet your requirements. In this article we will describe one powerful tool for checking availability of servers and network devices. It is Manage Engine Free Ping Tool.
The 1st Part of the article described some introductory discussion about ‘find’ with some useful examples. We hope you enjoyed it very much. In this article we are going to continue with examples with more practical situation. We will combine find’s capability with Linux’s pipe or Shell’s functionality to produce some very useful command-set for day to day System Admin work.
Assigning IP address to computers in corporate or home network is necessary step you need to do to include computers in network and enable its connection to other computers. There is two way to assign IP address: static and dynamic. If you have small number of workstations addresses can be set statically but in huge networks it is a complex task because of high number of workstations. In this situation dynamic IP address assignment is used. For this purpose Dynamic Host Configuration Protocol (DHCP) server is used. When you have DHCP server in your network IP addresses can be assigned dynamically. If computer is properly set to gain IP address from DHCP server you are as administrator released from task of static IP address assignment.
There are many reasons, you may need to find specific files. For any operating systems, there must have a utility to help the users to find specific files. Wildcard can help a bit to filter out file list for directory listing; but that cannot meet demand if you want to specify file type, size, create date, owner etc. Almost all UNIX and Linux give a file search utility named find. find is one of the very resourceful command that supports a wide range of parameters to use with and can be used with other commands to give better execution power. We will see more details below. Though find is available in UNIX and all Linux OSes, we are showing the examples from Linux and more specifically inLinux. But obviously, it will be same for any Linux.
This is a very small article that will help system admins to use ssh using PHP and do system admin work as demands. Before we go details, please take all of your necessary security measures before using the scripts and web site. Make sure the site is protected enough to allow only legitimate users to get the script’s access. Also make sure you are not allowing all kind of command to issue using the PHP scripts.
Workstation is one of the most popular virtualization tools you can use on your home or company computer to make your virtualization environment. It supports many platforms which can be virtualized such as Windows, Linux etc. Often system administrator use VMWare for testing purposes. It is because its easy use and efficiency in making virtualized environments. In this article I will describe steps for creating virtual machine in VMWare Workstation. When machines created you have prerequisite for installing operating system on it.
In our last episode of “Perl Scripting Tutorial for Beginners” we have talked about variables scoping, condition statements, iteration statements and most of the general purposes Perl operators. It was the continuation of the first part where we discussed about Perl’s basic syntax and variable types. In this article we will talk about basic File handling, Perl procedures/functions and Regular expression. And that will end the introductory articles. Let’s start!
Hi guys! Hope you’ve enjoyed our 1st article on Perl Scripting Tutorial for Beginners and waiting for the 2nd part. Here it goes. In Part-1 we have shared about some idea of what Perl is, how to run a Perl program, what’s the basic Perl syntax and the type of Perl variables. Today we will discuss about more on Perl’s variable and basic programming commands. Let’s start with Perl variable scoping.