The Remi Repo is a yum repository maintained by a French guy – Remi Collet. The remi repository provides a variety of up-to-date packages that are useful or are a requirement for many popular web-based services. How To add/install remi repository to CentOS/RHEL 5 or 6 For CentOS/RHEL 5 32-64 Bit # wget http://rpms.famillecollet.com/enterprise/remi-release-5.rpm # rpm … Read more
The sar utility, which is part of the systat package, can be used to review history performance data on your server. System resource utilization can be seen for given time frames to help troubleshoot performance issues, or to optimize performance. Installation Sar Sysstat can be easilly installed using the yum package manager: yum install sysstat … Read more
fdisk stands (for “fixed disk or format disk“) is an most commonly used command-line based disk manipulation utility for a Linux/Unix systems. With the help of fdisk command you can view, create, resize, delete, change, copy and move partitions on a hard drive using its own user friendly text based menu driven interface. This tool … Read more
IFTOP is a real time network bandwidth monitoring tool through Command line. IFTOP shows a real time updated list of network connections based on their network usage ordered on every 2, 10 and 40 seconds average. In this post we are going to see the installation and how to use IFTOP with examples. Install iftop from source code Install required packages First Install libpcap and libncurses library with YUM command: # yum -y install … Read more
This is guide, howto enable Vi and Vim text editor syntax Highlighting on Fedora/CentOS / Red Hat (RHEL). Actually on Fedora, CentOS and Red Hat (RHEL) does only have Vim (Vi IMproved), but if you run vi command it works, because it runs small/minimal version of Vim, which is like original Vi. I have seen … Read more
This is quick guide howto change runlevel on GRUB2. Title says runlevel 3 (refer to changing runlevel from 5 to 3), but yes same method of course works, if you want to change runlevel from 3 to 5, from 5 to 1 or from 3 to 1. Whole process is actually add one additional boot parameter. This modification is not permanent, when you … Read more
This is quick guide howto delete/remove/clean old kernels on Fedora, CentOS, Red Hat (RHEL). I use here two kernel as example, if you want to keep other more or less, then adjust amount of installed kernels as you wish. Normally reason why you maybe want remove kernels is limited disk space, example on VPS servers and … Read more
The RPM Package Manager (RPM) is an open packaging system, which runs on Red Hat Enterprise Linux as well as other Linux and UNIX systems. Red Hat, Inc. encourages other vendors to use RPM for their own products. RPM is distributed under the terms of the GPL. The utility works only with packages built for processing by … Read more
How can display a list of configured repositories under CentOS / Fedora / Red Hat Enterprise / Scientific Linux server operating systems? You need to pass the repolist option to the yum command. This option will show you a list of configured repositories under RHEL / Fedora / SL / CentOS Linux. The default is to list … Read more
Autocomplete feature is familiar to many who have used the Debian based Linux, like Debian and Ubuntu. For some reason, this feature is not automatically activated/installed on Red Hat -based Linux distros, like Fedora, CentOS and Red Hat (RHEL). Actually auto completion works with any Bash programs, but I think it’s very useful example with … Read more