CentOS is an Enterprise-class Linux Distribution derived from Redhat Enterprise Linux sources freely provided to the public.

learn more… | top users | synonyms (2)

1
vote
2answers
9k views

How do you change the desktop theme in CentOS?

I have a couple of questions, and am a complete newbie, so please be kind. How do you change the desktop theme in CentOS? How does one download CentOS themes from the internet? How do you install ...
0
votes
1answer
235 views

Is there something wrong with df output? [duplicate]

I'm using the command df -h to check disk usage on CentOS 6.4. I see an inconsistency with the output. look at the line Filesystem: total 490Gb, used 55Gb, and Available 411Gb. What is it mean? I ...
1
vote
1answer
204 views

What linux server settings allow my long running processes to keep running after the terminal is closed/terminated?

In previous jobs and experiences, I used screen or nohup to run my long running jobs from my terminal screen. Most, if not all of my previous jobs' servers dropped you if it didn't detect any ...
2
votes
1answer
1k views

Locked out of server with SSH - anything I can do?

I accidentally locked myself out of my server. I changed the port, added ssh-keys, PermitRootLogin is 'no' and if I remember correctly PasswordAuthentication is also no. Logging in on another server ...
2
votes
0answers
294 views

How to reset linux centOS 6.0 keyboard shortcuts with custom changes to default one?

On Single Desktop Environment.... I created some custom shortcuts, but currently I want to revert all the changes to default settings (which having no custom changes). Example: created like CTRL + N ...
0
votes
2answers
395 views

How to Find the Cause of Too Many Dropped SSH Connections?

Overview: I have a home setup, behind a home router, on which there is Proxmox Hypervisor running over 10 VMs. One of those VMs is the first point of entry after router. It is just a jump host Centos ...
2
votes
0answers
1k views

Can't Install ImageMagick on Centos using Yum

I am trying to install ImageMagick on my dedicated-virtual Centos server for use with PHP. I first ran the following commands successfully: # yum install gcc php-devel php-pear # yum install ...
2
votes
2answers
5k views

How to have the login screen through VNC in Oracle Linux?

Basically what I am looking for is similar feature like RDP on Windows. I should be able to view the login screen through VNC Viewer. Even if server is restarted I should still be able to access it ...
0
votes
0answers
465 views

Postfix not responding to telnet

I am doing a Postfix installation on CentOS 6.5 I can't get # telnet localhost 25 to do more than this: Trying ::1... Connected to localhost. Escape character is '^]'. EHLO ^] telnet> quit ...
0
votes
2answers
4k views

What causes cron to continuously send mail and how can I disable it?

I have a problem on CentOS 6.3 system where the crond process tries to unsuccessfully send mail over and over (at least I think this is what its doing) until the OS eventually generates a "too many ...
0
votes
1answer
873 views

no irq handler vector

I'm a Linux newbie and I've just installed CentOS 6.4 on my desktop machine. Everytime I start my terminal I get these error messages and I can't figure out why. How can I trace the problem and fix ...
5
votes
9answers
73k views

yum update fails: Error: Cannot retrieve repository metadata (repomd.xml) for repository …

I'm using CentOS 6.3. When I try to update my system with yum I have this message: yum update Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirrors.ircam.fr * ...
0
votes
1answer
56 views

Rebuilding RPM results in “invalid numeric value”

I am attempting to add some config changes to Bash and repackage it as an RPM in CentOS x86. This is not something I've done before, so I'm at the mercy of info I've found around the internet. I am ...
3
votes
3answers
51k views

Open port 80 in CentOS 6.5

I'm trying to open the Port 80 in my CentOS 6.5, on my virtual machine, so I can access the apache from my desktop's browser. If you take a look at the screenshot above.... I've added the line ...
1
vote
1answer
72 views

Using passwordless ssh on CentOS 6

I have a fresh install of CentOS 6 that I am trying to connect to using ssh without a password. But each time I try to login, I am asked for the password. Here are the commands in order: ssh-keygen ...
5
votes
2answers
4k views

Two ways to lock a password but only one to unlock

CentOS 6 Linux has two ways to lock a password: passwd -l usermod -L Today I found out, that they do something different. passwd writes two exclamation marks into the shadow file. # passwd -d ...
1
vote
3answers
2k views

New local user can't login to vsftpd

I'm a bit puzzled with this one and could really use some help. We have a CentOS 6 box running VSFTPD as a dropbox for our customers. Each customer gets a local user and is chrooted to their home ...
2
votes
1answer
6k views

Apache throws 403 Forbidden after moving DocumentRoot (CentOS 6.4)

I installed Apache via yum on CentOS 6.4. I changed the DocumentRoot in /etc/httpd/conf/httpd.conf to point to /home/djc/www: DocumentRoot "/home/djc/www" <Directory "/home/djc/www"> ...
3
votes
0answers
197 views

linux io stack analysis

I'm trying to understand the Linux IO stack by analyzing blktrace trace. Below is the trace i captured by executing simple fio sequential write with no Direct IO (5 x 8k request size). 8,16 1 ...
0
votes
1answer
1k views

Cannot start Glassfish server on CentOS 5: port is supposedly in use, but it really isn't

I asked our sysadmin to install CentOS 5 on a virtual server within our company, on which I plan to experiment with Glassfish. The server is up and running, I can ssh to the server, and I do have root ...
0
votes
0answers
32 views

Internet working but not all of LAN!

I have recently installed CentOS 6.5. system is behind a firewall (institutional access) with an IP address, say, 10.50.28.99. It is not detecting (pinging or connecting via ssh) computers with ...
0
votes
2answers
8k views

Realtek r8169 not working in CentOS 6.5

We have recently purchased Gigabyte 990xe-ud3 motherboards. It came with Realtek LAN conroller. However with CentOS 6.5 it is not working, i.e. although it shows that it's connected with network, it ...
2
votes
1answer
188 views

Does my VM need to be on the same LAN IP range to ping?

I have a home LAN where all internal IP addresses are in the rang 192.169.0.0-254. However, on one of those computers I have setup a CentOS VM, which currently seems to be set to 10.0.2.1. So the VM ...
2
votes
4answers
731 views

Keeping my production webserver updated

I have a production webserver (CentOS 6.5) and I just wanted to know how do I keep this updated interms of security updates and stable. For example, is it safe interms of not breaking anything on the ...
3
votes
1answer
3k views

Allow all users can write files/folders of user “apache”?

I run Apache 2.2.15 on CentOS 6.4 When a web local run a function and it created files/folders owned by user "apache". I can read these files/folders via samba but i can't write/delete them. I've ...
0
votes
1answer
213 views

Install a basic CentOS VM on Fedora 19 with libvirt

I would like to install a CentOS 6.5 virtual machine on my machine, only with command line tools and basic networking capabilities, i.e a way to have http and ssh connections between the host (Fedora ...
0
votes
1answer
417 views

CheckInstall on CentOS

I am attempting to make CheckInstall on a clean version of CentOS however I am having difficulty, I receive the following error: [root@host checkinstall-1.6.2]# make for file in ...
4
votes
2answers
11k views

“Last” command: How to show latest user login?

As I know, the last command shows recent logins by all users. But my PC (CentOS) has been used for roughly a year, and there are many users logged. I tried to used the last command, but it just showed ...
2
votes
6answers
2k views

Does LAMP Stack have a GUI?

I just bought a VPS server with LAMP. I have SSH access, however no clue how to use LAMP. I used to work with cPanel in the past. So far, when I type the server address I get the default "Apache 2 ...
4
votes
4answers
240 views

Locating files and displaying their owner

I have to search for a specific file type on a storage unit and also want to know their owners. With locate '*.txt' >> result.txt I find all files I'm looking for but I'm missing the owner this ...
3
votes
2answers
5k views

yum installs an old version of cmake

For some reason when I run yum to get cmake it will install an older version. Could it be because my repo list is not complete? I'm on CentOS 6 using a minimal desktop install from the non-net install ...
1
vote
2answers
284 views

No package community-mysql-devel available

I'm trying to get this package because I need it to build software on CentOS 6, but I'm getting this error: No package community-mysql-devel available I'm logged in as root, using yum. Could it be ...
2
votes
0answers
1k views

CentOS 6.5 sound permissions

I am trying to configure ALSA for a CentOS 6.5 minimal install, my problem is non-root users do not have permission to access the sound devices in /dev/snd because the files are missing access control ...
1
vote
3answers
79 views

Yum not working

When I try to execute yum I get this: My guess is I need to start the Ethernet connection because I cant ping and this is what what we do with SL6. I'm new to CentOS that is why I ask. I've ...
2
votes
1answer
2k views

Can not use WEBEX in CentOS 6.5 , Fedora 18 and 20

Tried to use WebEx with the following setup: Machine : intel i5 , x86 architecture OS : CentOs : 6.5 , Fedora 18 and Fedora 20 Java : jdk 1.7_45 64 bit Browser : firefox 26 with java plugin ...
0
votes
1answer
196 views

Installing virtualmin over webmin

I'm setting up a CentOS 6 server, and I need to install virtualmin. The server already comes with webmin setup, but there's no way I can see how to access virtualmin, so I assume it's not been set up ...
0
votes
1answer
898 views

how to install Padre in linux(CentOS)?

How to install Padre IDE tool in Linux(Centos) for Perl scripting language?
0
votes
2answers
184 views

Moving a folder to a NAS mount

I currently have a small Centos VPS which has some local SSD disk - I am getting close to my storage limit as I am storing a lot of flat files which are accessed very infrequently so I am looking at ...
4
votes
1answer
643 views

lshw lists my drive but it has no /dev file

Ive just got a dedicated server which has 2x 1TB HDD. However when I type df -h I get the following: [root@sd-56537 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 916G ...
0
votes
4answers
10k views

Torrent with GUI for Gnome on CentOS 6?

I'm running Gnome Desktop on CentOS, I was wondering if anyone knows of a good Torrent program like uTorrent that will run on Gnome CentOS? If so does anyone have a tutorial on how to install it.
0
votes
1answer
463 views

SSH accesss between CentOS and Vmware installed Ubuntu

I am here to request the Linux lads about using the SSH type remote access between my CentOS (Host) and VMWare installed Ubuntu. I am not new to Linux but I am completely new with practical ...
0
votes
2answers
1k views

How can I install file-roller for CentOS 6 to use in Gnome?

I've just started messing about with Linux and trying to figure things out as I go using tutorials. I've installed Gnome desktop and have some .rar files I would like to open. I've found file-roller ...
0
votes
3answers
1k views

CentOS 5: My Postgresql server version is different with my psql client. What should I do?

I installed PostgreSQL 9.1 in CentOS 5 x86_64 VPS, with these following commands: I specified which Postgresql version I'd like to install, so I choose 9.1 because I want to equate between ...
11
votes
2answers
1k views

Find out exact installation time of CentOS

I installed CentOS on my laptop about 8 month ago, and I want to know when exactly I installed it , how can I do that in CentOS 6.4 ?
2
votes
2answers
847 views

What is the most accurate way to measure disk read/write speed for an OpenVZ VPS host from within the host itself?

CentOS 6.x | OpenVZ I have an openvz VPS host and would like to measure disk read/write speed. Historically, on other physical systems, I've ran hdparm to collect this information. I haven't been ...
0
votes
1answer
277 views

CentOS(6.3) Gnome Desktop Environment does not respond!

After starting the Gnome desktop on CentOS (version 6.3), I was able to see everything (the desktop icons, time and date, the upper titles for Applications, system, and so on). But, when I try to ...
0
votes
1answer
1k views

how to connect centos from windows remotely?

I am using Oracle virtualbox and I have installed centos 6.4. How can I connect remotely to centos with WinSCP from Windows? There are fields like "hostname" in WinSCP but I don't know what to write.
1
vote
1answer
861 views

Worker MPM or Prefork?

I understand that there is a comparison topic between the two modules but this is different. I was contacting cPanel support in order to help me freeing up some memory usage on the VPS. They found ...
0
votes
2answers
640 views

why useradd havent created the standard files?

See I have created some user in my CentOS with useradd command. And I didn't get any kind of automatic standard dir creation and its not been versatile actually while I am creating that user. see the ...
1
vote
2answers
2k views

How to install red5 & Java on centos 6.4

There are many tutorials out there but not so many for 6.4 and it seems people are having problems with running either Java 6 or 7 and Ant. So does anyone know where to find a definitive guide? ...