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.

learn more… | top users | synonyms

0
votes
1answer
558 views

Linux ALSA: No sound out from internal speaker

There is no audio output when running "Test Speakers" in Sound Preferences -> Hardware -> pcsp. The internal speaker worked fine under Windows. Sound can, however, be heard when headphones or a ...
2
votes
2answers
7k views

Warning: remote port forwarding failed for listen port on Centos 6

I have a problem with port forwarding in centos 6, when i do: ssh -v -R root@hostname:19999:localhost:22 root@hotname I get this warning: Warning: remote port forwarding failed for listen port ...
0
votes
2answers
403 views

CentOS 6.5 PHP extensions

I need to enable php extensions like PDO and GD but I can't find a section with all the PHP extensions enabled inside /etc/php.ini, so in which file is this defined? EDIT: using PHP Version 5.5.14 or ...
0
votes
1answer
3k views

libssl.so.6: cannot open shared object file

I tried installing my application in a CentOS 6 server. But while I am starting Apache(Server version: Apache/2.2.26 (Unix)), I am getting error like [error] install_driver(mysql) failed: Can't ...
0
votes
3answers
255 views

Tuleap: Configuration of Bug Tracker report

I created a Bug Tracker and open different bugs. When I enter in my Bug Tracker, I see a web page with a search form in the upper part and a list with the different bugs in the lower part. However by ...
0
votes
1answer
28 views

Tuleap: display of project description

I entered a list in the description of my project with carriage return after each item of the list. However in the project page, when Tuleap displays the descritpion of the project, it suppressed the ...
1
vote
0answers
85 views

Linux Box Internet Speed

I have encountered a weird problem with my Centos6 Server, currently I have install Centos6.4 on a 64bit support CPU with 8GB of RAM and 500GB HDD. Just went to check on the internet this morning and ...
0
votes
1answer
519 views

Blank screen, CentOS 6.5

I'm on a Dell PowerEdge 2850, and I recently installed CentOS 6.5, and it worked well for a while, then recently whenever I booted into the OS like after the BIOS screen, everything went blank and it ...
5
votes
3answers
21k views

CentOS 6.5 - bash: service: command not found

So I can't type service on my CentOS 6.5 server. I'm logged in as root. When typing service I get this error: bash: service: command not found I have also tried to type sudo service, but with no ...
2
votes
1answer
4k 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 ...
0
votes
1answer
982 views

Installing Oracle 12c on CentOs 6.4

I need to install Oracle DB 12c on Centos 6.5/6.4 that has no GUI (or xserver) installed, Is there a way to do it? Can you point me to a manual? Thanks
3
votes
2answers
4k 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. ...
0
votes
1answer
34 views

Connect to CentOS LAMP instance from Windows PCs

I have a CentOS 6 machine running on our network which has a simple LAMP installation on it. I have some files there which I would want to access through other Windows PC which I am able to do so ...
1
vote
1answer
9k views

Mirror repository won't work (The requested URL returned error: 403 Forbidden)

I'm trying to find out why I still get the 403 when running the yum install command. I have created a repository mirror which can be read from remote machines. Do you have any suggestions? I have ...
0
votes
2answers
610 views

yum install gcc fails with invalid linux.dropbox.com/fedora directory

I am relatively new to Linux administration. I have installed Centos 6.5 (under VirtualBox on a Win7pro system). When I try to install gcc to the system using yum, I get the following results: ...
1
vote
1answer
523 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 ...
0
votes
1answer
4k views

Python2.7 / Pip2.7 install in Centos6: root does not see /usr/local/bin

I am trying to install Python2.7 in Centos 6. It's a pain as centos6 ships with python26 and yum is dependent on it. Furthermore yum does not seem to have python2.7 I ended up building it from ...
0
votes
1answer
135 views

Change order of two-factor-authentication

I am testing two-factor-authentication for ssh logins on some CentOS containers in our testing environment. I compiled my own rpms from github's source, installed and configured everything and have ...
0
votes
1answer
240 views

sfdisk can't create more than 4 partitions?

I'm running Centos 6 from command line, and I need to partition my disk using sfdisk more than 5 times. However I can't seem to create more than 4 partitions. >> sfdisk <scsi ID> --force ...
0
votes
1answer
102 views

Cannot jail ssh account using ChrootDirectory

I am trying to jail my accounts into their home directory. I tried to do: Match group accounts X11Forwarding no AllowTcpForwarding no ForceCommand internal-sftp ChrootDirectory %h ...
0
votes
1answer
367 views

Samba 3.6.9 on CentOS 6.5 existing user unable to connect to new share

I've got a question about samba connectivity. I installed a minimal installation of CentOS 6.5 and have it as a member server of AD, as per this guide: ...
0
votes
3answers
163 views

Open man page using nano

I want to open man pages in another text editor, in this case "nano". Does anyone know how I can achieve this please?
0
votes
3answers
8k views

How to install VLC media player in CentOS6?

I am using the CentOS, version 6, GNU/Linux distribution. I am in need to install VLC media player, what command i need to use at the terminal? I have tried yum install vlc.
0
votes
1answer
1k views

How to hide or remove the title bar of terminal in centos?

Want to remove the titlebar of the terminal. It would helpful if there is a way to generically do it for all the windows ? If not possible, still if it would be helpful if I can remove or hide the ...
0
votes
2answers
716 views

cannot connect centos (dell precision) laptop to 2 external monitors (but I can connect to 1 external monitor)

This is my first post here and hope I am following the rules of the forum. I reviewed Connecting 2 External Monitors to a Laptop? and confused with hardware terminology to figure out if my Dell ...
3
votes
1answer
243 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, ...
0
votes
1answer
284 views

Can I set-up sendmail on a LAN without a registered domain for testing mail?

I am running CentOS on a server at home which I use for development of Joomla websites. After they are developed, I move them to a hosting service. While developing the Joomla website on my home Linux ...
0
votes
2answers
301 views

CentOS connect to VirtualBox network

I have created a virtual network by using VirtualBox and I would like to know how can I make CentOS connect to it and have its own IP (e.g. 192.168.1.102 ) because I have a Windows 7 VirtualBox inside ...
1
vote
0answers
175 views

Centos 6 Eclipse font rendering at 8pt

I am running Centos 6.4 and Eclipse Juno and I like coding at 8pt size. I keep seeing a few letters with no spaces in between them. I have tried DejaVu Sans Mono Book, Droid Sans Mono etc. The font in ...
1
vote
1answer
234 views

How can I finish the unfinished transaction, so then I can make all the updates?

I try to use yum update and everytime it says me to run yum-complete-transaction first to finish the unfinished transactions remaining. When I try, it loops like forever, and sometimes it ends by ...
0
votes
1answer
386 views

Move rvm/gems or make available to root

On a CentOS 6 server I accidentally installed rvm and a bunch of gems as non-root user. Everything is running well, however I'll need to run rvm scripts as super user later. I'd like to fix my ...
1
vote
0answers
332 views

Avoiding sleep when lid is close and no one is logged in

I've an old Dell Latitude laptop that I've converted to CentOS 6.5. As this is going to work like a server (i.e. no one will use it directly) I've changed from UI the power management option to ignore ...
1
vote
0answers
169 views

hadoop cluster high availability error couldn't find or load main class

[hduser@mn1 bin]$ ./hdfs zkfc -formatZK Error: Could not find or load main class ”-Djava.library.path=”.home.hduser.2.3.0″.lib” I did every step just like in this tutorial, TWICE. The error still ...
0
votes
1answer
22 views

Do cronjobs run in CLI?

I am running PHP 5.5 with ZendOPcache integrated. There are two options for this extension - is cache enabled (which I've set to true), and the second one - is CLI cache enabled, which I've set to ...
0
votes
1answer
555 views

Centos 6.4 network manager disappered

Hi I am using a Centos 6.4 Desktop and from today the newtrok manager stopped appearing and only appears if I run the following command "nm-applet" and keep the terminal window open in order for me to ...
1
vote
1answer
47 views

Linux Image to recreate a machine with the same configuration

I have a CentOS 6.5 machine with some installed packages , I want three more identical boxes to be setup and I was wondering if I can make an image of the one machine that I have pre-configured and ...
0
votes
1answer
79 views

red 5 recorder app set up

Does anyone know how to set up this Red5 Recorder application on Red5 1 RC2 for Linux CentOS 6.4? I followed set up of WEB-INF folder from this document http://fms.denniehoopingarner.com/newapp.html ...
0
votes
1answer
2k views

How to mount a iSCSI/SAN storage drive to a stable device name (one that can't change on re-connect)?

We need stable device paths for our Twinstrata SAN drives. Many guides for setting up iSCSI connectors simply say to use a device path like /dev/sda or /dev/sdb. This is far from correct, I doubt ...
2
votes
1answer
225 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 ...
7
votes
4answers
16k 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 ...
0
votes
1answer
3k views

generate a keystore file in CentOS

How do I generate a keystore file in CentOS? I basically used the following command to generate the keystore and keys: keytool -genkey -alias signFiles -keystore name however I get the ...
0
votes
1answer
353 views

yum install Libreoffice Writer without Java

Is it possible for me to yum install LibreOffice Writer without Java also being installed? I don't want to install the full libreoffice package because it prompts me to update my java and tomcat ...
4
votes
1answer
18k views

How do I execute/run a .sql file in PostgreSQL 9.2.6 + CentOs

I would like to know how to execute a .sql file in PostgreSQL. I'm using CentOs 6.4. I have created a database and just need to run a script given to me to create tables. Thanking you in advance.
0
votes
1answer
3k views

CentOS 6.4 console keyboard layout hotswitch

On an X-server-less CentOS 6.4 box (so no setxkbmap) I share with another person, the other person's name is much easier to type in a particular keymap. Ideally, there would be a way, on-the-fly, to ...
0
votes
1answer
140 views

No loader-wizard in ioncube installer?

Trying to install IonCube on Centos 6, and well whenever I download the ioncube, there is no installer like the tutorials say there are. I am following the digital ocean tutorial: ...
0
votes
1answer
4k views

kvm cpu0 disabled perfctr wrmsr - hangs

I initially asked this question on StackOverflow, but it was marked as off-topic and said I might get help here.. so here it is ============== I am currently running Centos 6.5, and tried to follow ...
1
vote
0answers
262 views

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 ...
1
vote
1answer
961 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 ...
0
votes
1answer
23 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, ...
1
vote
0answers
32 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. ...