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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How to prepare a Centos ISO for creation of Xen domU guest with xl (not xm or virt-install)

I'm tearing my hair out. I will be scripting the creation of large numbers of small HVM (not PV) customer xen CentOS 6.5 guests on a CentOS 6.5 dom0. I therefore do not want to use virt-manager (I'm ...
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1answer
246 views

Centos 6 - Can't get out of safe mode

So I was going into safe mode from following a tut to fix the error Access denied for user 'root'@'localhost' (using password: NO) And I had issued the following command: mysqld_safe ...
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1answer
21 views

Filetype is NET? Other sites on server are “folder”

I am curious as to why two sites on my Centos 6 server are "NET" as the filetype. Does it make a difference vs a folder? Here is a picture for better understanding: As you can see, ...
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396 views

550 Permission Denied for new VSFTPD user

So I have had numerous searches in Google as well as here on Super User. None of them are properly addressing a solution and if so, they aren't related to my issue exactly. root works fine, but I ...
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27 views

centOS is not reading windows8 partition while installing

I am installing centOS over windows 8 in dual boot mode. And I made 30GB free space through windows partition. But when I install centOS , it is not reading that partitions. It shows full hard-disk. ...
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218 views

Auto mounting USB device in Cent-OS 6.4 without GUI

Is there any way to auto mount a USB flash memory on Cent-OS like Ubuntu ?
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20 views

RAM related errors on a CentOS server [duplicate]

I am getting a series of what appears to be RAM related errors on a server. Are these something to worry about? This is being used for scientific computation, is there a risk of data corruption that ...
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164 views

Unable to log in with correct credentials from different locations into vps

I have a VPS running CentOs 6.4 with CPanel 11.38. At the moment my 2 clients can't log in to the mailserver from their location. I have done it myself and the credentials are correct. I can log in ...
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133 views

Share home folder to multiple users in CentOS 6.3

Any way to share the home folder of user1 (/home/user/) to another user (user2) with only read permissions? As of now /home/user is the home directory of user1. I want to make it the home/readable ...
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2answers
2k views

Setting up Samba4 internal DNS forwarder to try multiple DNS servers

Our network setup until recently was that we had a Samba4 server acting as a DNS server for a few internal names, and forwarding to our main router for everything else (i.e. stuff on the internet.) ...
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2answers
796 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?
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1answer
3k views

Install packages in CentOS from DVD without connection to internet

I have a CentOS 6.4 system with no connection to internet. I have the installer DVD though. How can I install a package, say gcc, using this DVD alone?
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1answer
957 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 ...
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1answer
5k views

How do I block all ports except 22 and 80 in Centos6.2 64bit

How do I block all ports except 22 and 80 in Centos6.2 64bit. thanks all.
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1answer
138 views

Centos 6 log errors, how to fix?

So for some reason all my images on my blog disappear, no idea why now, but the first time it happened I removed Varnish, and the images came back, everything worked fine. An hour later the images ...
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108 views

VPS IP redirects to website instead of the IP directory? CentOs 6

So before I started putting websites on my VPS, I could access the IP directly and it would access the html folder in the /var/www/ area. But ever since I placed websites on the VPS, I can no longer ...
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1answer
114 views

Disabled root login and no root users.. What to do? CentOs 6

So I was undoing some changes here on CentOs 6, and I ended up removing all users who had root access, accept for the root user. But then I realized the root login is disabled, and I just disabled ...
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2answers
4k views

CentOS: View all users in a specific group

I added a user user01 to a group group01 using: usermod -a -G group01 user01 When I run in command id user01 it shows that this user has actually been added to the group. However, the file ...
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1answer
267 views

Warning: DocumentRoot * does not exist on Centos 6

My virtual hosts lines: <VirtualHost *:80> ServerAdmin webmaster@dummy-host.example.com DocumentRoot /www/docs/example.com ServerName example.com ErrorLog ...
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3answers
438 views

semanage command not changing file context

I am trying to change selinux context for upload directory to enable anonymous upload. This is the Directory path /var/ftp/upload This is the default context [root@server ftp]# ls -Z upload ...
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1answer
2k views

iptables rules for nfs

I was getting below error while typing showmount -e 192.168.56.2 in client machine [root@client ~]# showmount -e 192.168.56.2 clnt_create: RPC: Port mapper failure - Unable to receive: errno 113 (No ...
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2answers
438 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 ...
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2answers
719 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 ...
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1answer
144 views

how to edit initrd.img to add a autostart application at boot in a live CentOS image

I want to be able to open an application every time a live Centos image boot. I already have extracted the contents of initrd.img file, and analyse the init file, but with no success. I know that i ...
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402 views

Problems installing FlowTools CentOS 6

I'm struggling to install flow-tools on Centos. When I try with RPM I get: warning: flow-tools-0.68.5-1.el6.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID e9bc4ae1 error: Failed dependencies: ...
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1answer
1k views

while installing a patch I am getting this error: 1 out of 1 hunk FAILED --

We are configuring lighttpd in centOS 6.4. To enable kerberos authentication, we are trying to install this patch. Saving rejects to file /usr/local/sbin/lighttpd.rej patching file ...
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1answer
972 views

What does “Sense Key : Recovered Error” mean?

When powering up a external USB 2TB drive on CentOS 6.4 and I am seeing these messages in the dmesg output: kjournald starting. Commit interval 5 seconds EXT3-fs (sde1): using internal journal ...
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1answer
118 views

How to send an alert when a user logs in via .htaccess?

We have vendors working remotely on our server and would like to know when they are accessing the development. It is accessible behind a username/password provided by .htaccess. How could I detect ...
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1answer
274 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 ...
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2answers
1k views

CentOS 6.4 and alternate SSH port not working

I've got a CentOS 6.4 machine and would like to change the default SSH port, and followed these instructions: CentOS Wiki After making those changes (including the "semanage port -a -t ssh_port_t -p ...
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1answer
178 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!
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131 views

How to hide a directory and its contents on Centos

A quick Google search did not clear up my issue. I need to hide a directory on Centos 6. I want to do that because I'm running the command tree to print the tree directory structure, but I don't want ...
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1answer
2k views

packages excluded due to repository priority protections

I am not able to update my PHP in centos 6. I have centos base, epel and rpmforge repos. yum update php Error: Package: php-tidy-5.3.3-14.el6_3.x86_64 (@updates) Requires: php-common = ...
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1answer
553 views

Why I can't upgrade to vim 6.3 or above using yum on CentOS 6.0

I'm trying to upgrade to vim 6.3 so I can improve my vim skills using an online vim book (http://learnvimscriptthehardway.stevelosh.com/chapters/00.html). I'm trying to update my vim package (which is ...
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62 views

centos 6.0 : how to print to a Xerox laser printer

I use a centos 6.0. How can I print to the Xerox printer from my applications -- like LibreOffice, emacs, eclipse, chrome, etc ?
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1answer
144 views

installing node on centos 6.0

while googling on how to install node on my centos box, I found this link : https://github.com/joyent/node/wiki/Installing-Node.js-via-package-manager. This page suggests that I do the following. ...
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3answers
2k views

upgrading google chrome on centos 6.0 using yum not working

I tried upgrading my chrome 26.x by going to the "about google chrome" page -- but unlike my windows chrome, the linux chrome(centos 6.0) v 26.x did not offer to upgrade to the latest version. I ...
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2answers
87 views

Troubleshot erronous BIND9 DNS Address entry

I setup a BIND9 DNS server in the LAN as a backend to Samba4 service. The network address of my LAN is 192.168.2.0/24 and I statically specify the IP address of DNS server as 192.168.2.144. ...
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4answers
6k 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/ ...
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1answer
379 views

OpenVpn and SSH tunneling

first of all I'm a linux newbie and just rent my vps few days ago. I'm using this vps for ssh tunneling and web server (apache, php, etc). Today I want to install openvpn but I'm bit confused that if ...
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2answers
30k 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 ...
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0answers
201 views

Moved /lib64 to /backup_lib64 using sudo, now sudo doesn't work on CentOS6.4

I did sudo mv /lib64 /backup_lib64 to test some compilation. Now sudo doesn't work at all farhat@heracles:~/software/sudo-1.8.7$ sudo ls sudo: unable to dlopen /usr/libexec/sudoers.so: (null) ...
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1answer
1k views

How to run something in background in Centos

I use CentOS and I have a little bit of difficulty with background tasks When something like updatedb command is running, I press CTRL+Z, instead of running in the background it immediately says ...
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1answer
119 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 ...
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3answers
19k 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 ...
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1answer
369 views

library for html to rtf conversion [closed]

I am much needed the linux library for converting html document to rtf. As currently, I have used CMS kind of functionality where html is stored in database. I need to convert it in rtf. If any ...
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1k views

Synaptics click Pad for linux

I bought a Sony Laptop which has Windows 8 pre installed. I installed CentOS besides it, but my click pad doesn't work properly - the right-click and multi-touch are disabled. I wonder if there is ...
3
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1answer
396 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 ...
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1answer
289 views

On Centos 6.3, why do several swap measuring methods return different results?

I have a production system running centos 6.3 with 96 Gb RAM and swap of 2 Gb. The intention is that there is enough RAM on the box so that no processes should get swapped. Over the last week or so ...
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2answers
295 views

Linux: Should off-site backups be stored in ext3 or ext4?

We have been using ext3 for Linux server off-site backups. With everything else on CentOS 6 being ext4, I'm wondering if it would be a better idea to also have the off-site backups in ext4 too? The ...