CentOS is an abbreviation for Community Enterprise Operating System that aims to be compatible with its upstream source, Red Hat Enterprise Linux. CentOS 6 is the 6th major version of CentOS, which was released on July 10th, 2011.

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16
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3answers
323 views

How to deduplicate 40TB of data?

I've inherited a research cluster with ~40TB of data across three filesystems. The data stretches back almost 15 years, and there are most likely a good amount of duplicates as researchers copy each ...
15
votes
3answers
17k views

Installed minimal CentOS 6.4 in VirtualBox but have no internet?

I just started using the VirtualBox, but I don't seem to have any internet on the CentOS when I type yum update. Is there a solution to my problem? (it could possibly be a problem with misconfigured ...
15
votes
1answer
32k views

How to Boot CentOS in CLI?

I have a CentOS 6.2 OS which boots into GUI. How, upon startup, can I not boot into the GUI and instead, boot into the CLI? I want to do this at computer startup time.
6
votes
2answers
19k views

Why is pip not listed in easy_install on CentOS 6? Where to get it?

I am trying to install pip for python on CentOS 6. I thought of installing it through easy_install but it is not there. I tried to find easy_install with find command, but no luck. I tried to ...
6
votes
2answers
27k views

Upgrading PHP 5.3.3 to 5.4.4 in CentOS 6.4

I'm using CentOS 6.4 (centos-release-6-4.el6.centos.10.x86_64). I'm trying to upgrade the php version from 5.3.3 to 5.4.4 by using: yum upgrade php-mysql php-devel php-gd php-pecl-memcache php-pspell ...
5
votes
3answers
4k views

How can I configure gdm to allow X connections to other servers/workstations?

I have an issue on all new installs of CentOS 6.2 on my network. Connecting to remote machines using X11 gui software fails for reasons associated with the xauth. I'm not sure how to diagnose but have ...
4
votes
3answers
3k views

What is PAM (Pluggable Authentication Modules) in Linux?

What is PAM (Pluggable Authentication Modules) in Linux? I know it is used for authentication, but what good is this? How does it work? I am using CentOS 6.2.
4
votes
2answers
427 views

Linux cal command not showing proper output

If you type cal 9 1752 in a Linux terminal you will get strange output. For example: [max@avi ~]$ cal 9 1752 September 1752 Su Mo Tu We Th Fr Sa 1 2 14 15 16 17 18 19 20 21 22 23 24 ...
4
votes
1answer
9k views

How to get `mail` on a CentOS 6 server (running postfix)

On my old server, and most other devices I have run, there is a provided mail program. On my new CentOS 6 server, running postfix as the MTA, I cannot send command-line email via mail - the tool is ...
4
votes
2answers
4k views

How can I manually control a fan from the terminal?

I'm trying to control the fan speed on my desktop, and I'd appreciate your help. Goal: Use a script to control the fan speed on my computer. Motivation: The embedded BIOS "Smart Fan" settings isn't ...
4
votes
1answer
203 views

How to correct a screen wrapping around?

I got my hands on a Ubuntu System (which was displaying correctly) and I installed CentOS 6.3. The screen is wrapping around on itself. Any ideas? See for yourself
3
votes
2answers
4k views

Why Centos still not using Latest kernel

As i have seen many changes and improvement in kernel 3.xx The improvement i like is dmcache which introduced in kernel 3.9 I have 3 server with centos installed on all machine Centos is still ...
3
votes
1answer
2k views

httpd on CentOS resolving only the first VirtualHost

I just got a new cloud server and while setting it up, I can access the web root by pointing my browser to the IP address of my server, but the domain names are still propagating so when I go to them, ...
3
votes
2answers
5k views

NIS failing on CentOS 6

Solved: See bottom. tl;dr: enable network manager. I'm trying to set up a CentOS6 system to login using NIS. I've set up the NISDOMAIN and for the files like passwd to be on the NIS server in ...
3
votes
1answer
115 views

Is it possible to have 2 GUI desktop sessions for 2 different users (of same machine)?

I need to set-up the dev-environment to be able to debug the backend of an application in Eclipse. There is a front-end (runnable under user1) and a back-end (runnable under user2). Each user has its ...
3
votes
1answer
12k views

Can't ping ip's or hostnames on fresh CentOS 6.2 install

I just installed CentOS 6.2 on a box using ipmi and have tried setting up the network with no luck. I've got a 66.x.x.56/29 allocation of ip addresses on vlan (66.x.x.56 to 66.x.x.63), so I have set ...
3
votes
1answer
344 views

Wicd set up on centos

I am having difficulties with wicd on start up on CentOS 6. When it starts up it complains that it cannot connect to the DBus and that the daemon has shut down. When I check the log file there is ...
3
votes
1answer
314 views

Why don't my certificates match?

I'm configuring a VPN with OpenVPN without interfaz, the problem is when I try to connect, it says: TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity) ...
2
votes
3answers
3k views

It is not possible to Run Google Chrome as root

I am facing one strange problem in my system. I am using CentOs 6.2 (linux) being root it is not possible to open Google Chrome browser. It giving the error like this... Firefox is working fine in ...
2
votes
4answers
5k views

How to know which fonts are installed on CentOS?

Question-1: Is there a way to know what all fonts are installed on the CentOS 6.2 through command-line? I have checked the fonts with the following command ls /usr/share/fonts/default/ghostscript/ ...
2
votes
2answers
1k views

cpufreq performance module?

I see no cpufreq performance module: $ ll /lib/modules/2.6.32-358.2.1.el6.x86_64/kernel/drivers/cpufreq/ total 88<br/> -rwxr--r--. 1 root root 20576 Mar 12 18:26 cpufreq_conservative.ko ...
2
votes
1answer
107 views

Is LAMP needed in Centos 6.3

I am planning to install OpenVZ on Centos 6.3 and create containers using OS templates.I understand OpenVZ creates Virtual Private Servers.So is there a need to install LAMP in the host distro before ...
2
votes
1answer
760 views

Why does ping to google.com or 8.8.8.8 fails

I am using Cent OS 6.4 and it is in a official lab. ping google.com gives the below output and hangs: [root@LAB1 ~]# ping google.com PING google.com (74.125.236.195) 56(84) bytes of data. ping ...
2
votes
2answers
4k views

Unable to login from GUI in CentOS 6.3

I'm facing a weird problem now. Unable to login to the desktop and use the GUI. This problem is somewhat similar to Not able to login through the GUI but there weren't any autologon system enabled. I ...
2
votes
1answer
2k views

Wrong RPMforge Installed

I am running CentOS 6.2 and I installed RPMforge EL5 by mistake and I need to uninstall it and install RPMforge for EL6. How can I do that?
2
votes
1answer
153 views

How to install gzopen library on CentOS 6.4?

I'm compiling a program using gzopen library. How can I install this library in CentOS 6.4? I have tried to install it with yum but package not found! No package gzopen available!
2
votes
2answers
3k views

Cinnamon for CentOS?

I was trying to install Cinnamon from Source code in a CentOS v.6.4. Unfortunately, I was stumbling upon dependencies that were becoming weird each and every time. Some of them, I tried to build, ...
2
votes
1answer
668 views

grub-install gives an error message I don't understand

I'm new to Linux, am using CentOS 6.3, and am attempting to install CentOS 5.8 ISO to a pen drive following instructions from here. My pen drive is /dev/sda and partition 1 is vfat. It's mounted on ...
2
votes
1answer
7k views

How to install/enable compiz on CentOS 6?

How do I install and/or enable compiz-fusion on CentOS 6? The packages don't appear to be in the repositories?
2
votes
1answer
91 views

who -t showing nothing in command prompt

In [root@localhost ~]# man who -t means t, --time print last system clock change I changed the system time using using [root@localhost ~]# date -s 05:27:00 Thu Jul 12 ...
2
votes
1answer
115 views

ffmpeg subtitle not visible

I'm using ffmpeg static. I have to two servers. When i encode at the first server, subtitle works; but it does not work at the second server. I installed fontconfig, fontconfig-devel, freetype, ...
2
votes
0answers
160 views

Making SSH connection to Centos 6.5 VM takes ages

I installed Centos 6.5 in a Virtual Box VM. Everything works smooth, except for SSH logins. It takes ages for the command prompt to display. With some verbosity added: debug2: kex_derive_keys ...
2
votes
1answer
102 views

how to run as a nobody account?

I'm currently using CentOS 6 on a VPS (openVZ). I just created a user stunnel_user and group stunnel_grp to run stunnel on some nobody:nogroup. I changed the shell of the stunnel_user to ...
2
votes
0answers
288 views

Is my CentOS library multiarch? And what does that mean?

On CentOS release 6.4, I am trying to run a binary. However, it gives the following complaint: (...) requires "/lib/libuuid.so.1" to function. From a quick search, I can see that the only similar ...
1
vote
1answer
693 views

What does / (forward slash) mean in cd?

I use the following commands to change directory and it generally works fine. [max@localhost max]$ cd / [max@localhost /]$ cd /home/max/ [max@localhost max]$ pwd /home/max But today, by mistake, I ...
1
vote
1answer
109 views

Permission Denied in Crontab

I've searched half a day for the answer to this, with no luck. Any assistance will be appreciated. I have a PHP script that modifies the crontab, loads a new cron job, removes some etc. The script ...
1
vote
1answer
1k views

Linux expert command - where should I enter?

I need to enter "Linux expert" at the boot prompt. I've centOS6.2 DVD but I'm not sure where exactly should I enter this & when will I get the boot prompt? I put the DVD & rebooted & it ...
1
vote
1answer
3k views

How do I install a GUI from the command line?

I have a CENTOS 6.0 machine that I have installed from a x86_64 minimal ISO. It runs at init 3 at the moment, and I want to install a GUI on it. When I do an init 5 from the prompt, all I get is ...
1
vote
1answer
16 views

bind 9 and multiple domain names

I have been told the following from someone after trying to get more than one domain name (zone) to work on the same BIND instance. We are able to get a single domain name "example.com" working but ...
1
vote
1answer
249 views

Why is my yum update failing?

Why is my yum no longer working? It was previously working fine. But seems to have inexplicably stopped working. FYI, I'm running this on Centos system that is running in VirtualBox on my MacBook Pro. ...
1
vote
2answers
643 views

Always have to chown when adding new file? Centos 6

Whenever I upload a new file to my server, I have to chown -R apache:apache /dir in order for it to be accessible. Is there an easier way around this?
1
vote
2answers
323 views

Can I run Centos 6 on my old xp computer?

First off, the computer specs: Pentium 4 2.4 GHz 512 MB RAM Asus Broadcom 440 network adapter x86 based PC You may need more information, I don't know. I would like to erase Windows XP and put a ...
1
vote
2answers
538 views

Why my local website display Apache2 Test Page

I've installed httpd, mysql and php on my CentOS 6.4 server. I've setup Virtual host 80 and 443 for trien.abc My client (windows 7) still displays Apache2 test page. Where did I go wrong? My Apache ...
1
vote
1answer
258 views

Need help installing Imagemagick on Centos 6.4

Helo guys. I am trying to install Imagemagick on centos 6.4 server using this tutorial http://www.tecmint.com/install-imagemagick-in-linux/ The problem I had to face is that when I run peck install ...
1
vote
1answer
3k views

BIND named… unknown host

I have a very basic home network: A CentOS 6.3 server (storage, DNS, httpd, etc), a desktop, several laptops. I was running an old version of CentOS on the server for a long time (5.4 or something) ...
1
vote
1answer
5k views

How to fix certificates verification creating a VPN (OpenVPN)?

Ok, I'll explain what I did... and at the end is the queston. THank you! To set up my VPN I installed OpenVPN in server and client machines. On server I configured the cert Authority in the file ...
1
vote
2answers
13k views

Installing VLC on CentOS 6.2

I'm using CentOS 6.2, and I tried to install VLC Player using yum, but it shows "No package vlc available". I tried below command: [root@localhost ~]# yum install vlc Loaded plugins: fastestmirror, ...
1
vote
3answers
7k views

Creating Windows 7 and Centos 6 Dual boot from two different drives

Windows 7 and Centos 6 are installed in different hard drives I would like to create a dual boot but I am not sure how to create a dual boot from windows 7.
1
vote
1answer
87 views

How to upgrade xorg-x11-server

I want to use Xdmx, but it has got bug. I found this bug on Bugzilla and there is information that bug is fixed in xorg-x11-server-1.14.3-2.fc19 package. I use Centos 6.5 and I cannot upgrade to 7 (I ...
1
vote
1answer
1k views

PuPHPet, Vagrant and SSH - SSH Connection Timeout

I built a new CentOS 6.5 vagrant box and after provisioning, the SSH connection keeps timing out. I've attempted the steps in Vagrant ssh fails with VirtualBox but I receive errors (see below). I ...