Linux / Unix logtop: Realtime Log Line Rate Analyser

How can I analyze line rate taking log file as input on a Linux system? How do I find the IP flooding my Apache/Nginx/Lighttpd web-server on a Debian or Ubuntu Linux? You need to use a tool called logtop. It is a system administrator tool to analyze line rate taking log file as input. It reads on stdin and print a constantly...

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Install EPEL Repo on a CentOS and RHEL 7.x

How do I install the extra repositories such as Fedora EPEL repo on a Red Hat Enterprise Linux server version 7.x or CentOS Linux server version 7.x? You can easily install various packages by configuring a CentOS 7.x or RHEL 7.x system to use Fedora EPEL repos and third party packages. Please note that these packages are...

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Connect To Amazon AWS EC2 Instance From a CentOS / RHEL Using SSH Client

i have created/launched Amazon Machine Image (AMI) instance powered by a CentOS/RHEL/Red Hat Enterprise Linux. How can I connect to my instance using OpenSSH Linux/Unix/OSX ssh client? You can use OpenSSH ssh client program for logging into a remote machine and for executing commands on a remote machine. The same client can...

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CentOS / RHEL 7: Install GCC (C and C++ Compiler) and Development Tools

How do I install gnu gcc compiler and related tools such as autoconf, automake, flex, c++ compiler, and bison on a CentOS 7 or Red Hat Enterprise Linux version 7 server?You can setup a basic development environment with the following packages on a CentOS Enterprise Linux or Red Hat Enterprise Linux version 7...

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FreeBSD: (EE) Failed to load module “fbdev” (module does not exist, 0) Error and Solution

I 'm installing FreeBSD 10 Xorg and xfce4 desktop. But, getting the following error: (EE) Failed to load module "fbdev" (module does not exist, 0) How do I fix this problem on FreeBSD 10 amd64 based system?...

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Linux Redirect Error Output To File

I am a new Ubuntu Linux and bash shell user. I also know how to redirect output from display/screen to a file using the following syntax: cmd > filels > file However, some time errors are displayed on screen. How do I store and redirect output from the computer screen to a file on a Linux or Unix-like systems?...

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FreeBSD 10: Apply Binary Updates To Keep Base System Up To Date

I know keeping a FreeBSD server up to date is a very important. How can I apply binary system patches and updates to a new installation of FreeBSD 10 server? You need to use the freebsd-update tool. It is used to fetch, install, and rollback binary updates to the FreeBSD base system...

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CentOS and RHEL 7: Install Linux, Apache, MariaDB, PHP (LAMP) Stack

I am new Red Hat Enterprise Linux version 7 user/sysadmin/developer. This version made the big number change for RHEL 7/CentOS 7. How can I install LAMP (Linux, Apache, MariaDB, PHP) stack on a RHEL version 7 or CentOS Linux version 7 using CLI or over ssh based session...

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Fedora Linux 19/20 Install Adobe Flash Player

I want to use Pandora online radio on a Fedora Linux desktop. How can I install Adobe Flash Player Plugin version 11.2 with yum command on a Fedora Linux 64 bit desktop or 32 bit version 20 laptop system? Adobe provided yum repository that contains RPM packages of Adobe Linux Software. You use yum command...

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Linux: Bash Delete All Files In Directory Except Few

I'm a new Linux system user. I need to cleanup in a download directory i.e. delete all files from ~/Downloads/ folders except the following types: *.iso - All iso images files.*.zip - All zip files. How do I delete all file except some in bash shell on a Linux, OS X or Unix-like systems?Bash shell supports rich...

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Fedora Linux 20: Install Broadcom-wl STA BCM43228 Wireless Driver

I'm using Dell / Lenovo laptop with Broadcom's IEEE 802.11a/b/g/n based wireless card. How can I install Broadcom-wl STA BCM4322 Wireless driver on a Fedora Linux version 20?Broadcom's IEEE 802.11a/b/g/n driver can be installed on any Linux disruption including Fedora Linux version 20. The driver (broadcom-wl and kmod-wl) works...

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CentOS / RHEL / Fedora Linux: Use Yum Command With A Proxy Server

My CentOS Linux based laptop can only be accessed through our corporate proxy servers. How do I access and use yum command with a Web proxy server on a CentOS / RHEL / Fedora / Red Hat / Scientific Linux?Yum repositories can be accessed through standard proxy servers such as Squid proxy server. You need to provide...

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OS X: Create and use Live USB Fedora Linux Media

My new Dell Laptop has no DVD or CD drive. I'm trying to create a bootable Fedora Linux 20 USB using UNetbootin utility as described here. But, UNetbootin failed to create bootable USB image on OS X. How do I create Fedora Linux 20 USB Media in Apple OS X using command line options? You need to use the following two commands...

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