CentOS / RHEL 6: Install Midnight Commander File Manager

I am a new CentOS Linux user. How do I install GNU mc (Midnight Commander) on Red Hat Enterprise Linux or CentOS Linux server version 5.x/6.x using bash command line?

GNU Midnight Commander (also known as mc) is a free and visual file manager, licensed under GNU General Public License. It is a clone of Norton Commander. It was started by Miguel de Icaza in 1994. It's a feature rich full-screen text mode application that allows you to copy, move and delete files and whole directory trees, search for files and run commands in the subshell. Internal viewer and editor are included.

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Linux: Keep An Eye On Your System With Glances Monitor

Is there is a tool that can provide me a maximum of information (such as cpu, disk I/O, network, nfsd, memory and more) about my Linux/Unix server in a minimum of space in a terminal?

There are plenty of monitoring tools on Linux or Unix-like systems that can provide information about your server:

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What Does –– (double dash) Mean In SSH Shell Command?

see lots of seasoned admins and cloud provider wrapper scripts use ssh client command as follows in shell:

ssh nixcraft@server1.cyberciti.biz --

What the double -- (dash) does here? Why it is used in this shell command and why not just use the following?

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HowTo: Reinstall MySQL v5.x On Linux

My MySQL database installation has been corrupted. I would like to delete old mysql server. How do I reinstall MySQL database server version 5.x on Linux or Unix-like oses? A software upgrade broke my system. How can I uninstall and re-install mysql again to get fresh full mysql again?

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Mac OS X: Install wget Network Downloader Utility

recently learned that "wget" can continue getting a partially-downloaded (resume download) file. I am unable to find wget command on Mac OS X. How do I install install wget on Mac OS X (Mountain Lion/ Mavericks / Snow Leopard)? How can I install wget in Mac OS X without 3rd-party repo such as Homebrew or MacPorts?

You can install the latest version of GNU/wget and many other open source software without using Homebrew or MacPorts. The steps are as follows:

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HowTo: Enable Nginx Status Page

Apache has status page that can provide data about Apache. How do I enable and display such page using nginx server? How do I enable nginx status page on Linux or Unix-like operating systems?

Like Aapache (httpd), nginx has status page to give you information about Nginx's server health including Active connections and other data. You can use this info to fine tune your server. Please note that you will get stats for entire Nginx server running. This can not be used to get info per virtual host i.e. you will get data for entire Nginx server only.

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Python sleep(): Add Delay In A Seconds To Suspend Execution Of A Script

am a new Python user. I would like to delay execution for five seconds in a Python script. How do I add a time delay in Python on Unix/Linux? Is there a sleep command in python like the Unix/Linux sleep utility to suspend execution of a bash script?

You need to import and use a module called time. This module provides various time-related functions for Python users.

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CentOS / RHEL: See Detailed History Of yum Commands

would like to see detailed information on the history of yum transactions such as updates, deleted packages, and other information. How do I see history of yum commands on CentOS / RHEL 6.x based server? How do I undo or redo or rollback packages using yum command?

The yum command has history option on the latest version of CentOS / RHEL v6.x+. To database are normally found in/var/lib/yum/history/ directory. The history option was added at the the end of 2009 (or thereabouts) to yum command. The history command allows an admin to access detailed information on the history of yum transactions that have been run on a system. You can see what has happened in past transactions (assuming the history_record config. option is set). You can use various command line options to view what happened, undo/redo/rollback to act on that information and start a new history file.

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CentOS / RHEL: Install php-tidy Module

am a new CentOS / RHEL / Red Hat / Fedora Linux server user. I need to provide tidy library support using php. How do I install php-tidy on RHEL or CentOS Linux for Apache server?

You need to install the following module using the yum command on RHEL/CentOS/Fedora/Scientific Linux server:

1. php-tidy - The php-tidy package contains a dynamic shared object that will add support for using the tidy library to PHP.

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