Questions tagged [centos-6]

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 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.
bgmCoder's user avatar
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28 votes
4 answers
51k 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 ...
Vlad's user avatar
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25 votes
4 answers
132k 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.
Linux NewB's user avatar
17 votes
3 answers
2k 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 ...
Michael Stauffer's user avatar
15 votes
4 answers
31k 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 ...
khizar ansari's user avatar
14 votes
4 answers
52k 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/ ...
Prakash K's user avatar
  • 253
12 votes
2 answers
60k views

Is there any way to reset the `httpd.conf` in CentOS to the original/default version?

I was learning server installation by creating a web server in VMware, I don’t know what changes I made to httpd.conf. Is there any way to reset all the configuration for httpd.conf to default? ...
KodeCeeper's user avatar
11 votes
2 answers
40k views

How do I remove permission to specific user using setfacl

I just executed the following command setfacl -m user:userXXX:r /home/userYYY/private/ now I see $ ll /home/userYYY/private/ total 32 drwx------+ ...
statquant's user avatar
  • 245
10 votes
3 answers
63k 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 ...
user3524823's user avatar
10 votes
2 answers
9k views

Memory usage grouped by parent process

How can I find the total memory usage of all processes (including child processes) with PPID of 1. For a program like nginx/httpd which forks several child processes, ps/top gives the memory usage of ...
Joyce Babu's user avatar
9 votes
2 answers
67k 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 ...
Andres SK's user avatar
  • 245
7 votes
2 answers
28k 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 re-...
tsatiz's user avatar
  • 173
7 votes
4 answers
17k 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 drwxr-...
max's user avatar
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6 votes
2 answers
45k 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 /etc/...
thilina R's user avatar
  • 2,963
6 votes
4 answers
88k views

How do I create yum repo file?

I know there is a previously asked question, but I still have some doubts so asking again. How do I create a yum repo file? I know that in the /etc/yum.repos.d/ I have to create .repo file. Below is ...
max's user avatar
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5 votes
3 answers
7k 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.
max's user avatar
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5 votes
2 answers
2k 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 ...
max's user avatar
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5 votes
2 answers
46k views

How can I create a service in CentOS 6?

I need to create ratchet service on my dedicated server (CentOS 6). I have successfully created this service on local CentOS 7. The problem is that the server has got old version of CentOS and I need ...
Faryal Gohar's user avatar
5 votes
3 answers
16k 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 ...
jbangerter's user avatar
5 votes
1 answer
1k views

mount and umount behaving differently when run under cron

Running CentOS 6 in AWS, and what I'm seeing is baffling me. There is an s3fs mount in /etc/fstab that sometimes loses its ability to read and write from. I have a cron job that worked great for ...
Joshua Grigonis's user avatar
5 votes
1 answer
26k 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 8....
Siva's user avatar
  • 143
5 votes
1 answer
2k 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
Sky High's user avatar
5 votes
3 answers
7k 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 ...
rjmoggach's user avatar
  • 293
4 votes
3 answers
11k 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 ...
jreid9001's user avatar
  • 141
4 votes
2 answers
8k 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. ...
Saqib Ali's user avatar
  • 173
4 votes
3 answers
6k 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, ...
Xanathos's user avatar
  • 245
4 votes
1 answer
52k 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 /etc/...
AAlvz's user avatar
  • 847
4 votes
1 answer
2k views

Upgrading glibc in centos 6.6

My server is using glibc-2.12.x. when I install certain packages it gives an error.Dependency not found glibc-2.14 or above is required.When I try using yum install glibc* it says server is already ...
NINJA's user avatar
  • 101
4 votes
0 answers
1k views

Setup default PHP version in Plesk 12

I've just setup a Plesk 12 CentOS6 vServer. I installed some PHP-versions like 5.4, 5.5 and 5.6. The customers can change the running PHP version in the interface. All is working fine, but I have one ...
dude's user avatar
  • 153
3 votes
1 answer
18k 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 ...
warren's user avatar
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3 votes
2 answers
27k 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 ...
Luca's user avatar
  • 193
3 votes
3 answers
2k 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?
Reado's user avatar
  • 461
3 votes
2 answers
28k 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 ...
max's user avatar
  • 3,943
3 votes
1 answer
3k 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, ...
Jared's user avatar
  • 217
3 votes
1 answer
3k 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?
hanleyhansen's user avatar
3 votes
1 answer
6k views

Docker : cannot access internet from container

I am running CentOS 6.6 behind a corporate proxy. I've installed docker, and I had to make some modifications in order for the daemon to access the Docker Hub through the proxy. This part is working ...
Elouan Keryell-Even's user avatar
3 votes
1 answer
456 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 ...
3D Coder's user avatar
  • 131
3 votes
2 answers
7k views

CentOS freezes during startup in VirtualBox

This is an installation of CentOS 6.3 in VirtualBox 4.2. I was able to install with no problems and have booted it up about 3-4 times previously and used it without any issues. Now, when I start it, ...
aearon's user avatar
  • 143
3 votes
1 answer
17k 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 ...
Henry F.'s user avatar
3 votes
3 answers
5k views

Where does this name come from? root@<hostname>

When I putty into my CentOS 6 server I am shown root@ DemandStream Development This was a copied and repurposed Linux VM from one of our development environments. How do I change this name? It seems ...
zdavis28's user avatar
3 votes
1 answer
16k 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 = 5.3.3-14....
Mahesh's user avatar
  • 133
3 votes
0 answers
1k views

Protocol Error when writing to vbox shared folder

So to begin I am running a server where a vbox vm is running that has a shared folder mounted to transfer items in and out of the vm. This shared folder goes to multiple vms on the server. Recently ...
user3738622's user avatar
3 votes
0 answers
2k views

docker-machine behind corporate proxy

I've installed Machine (Docker tool), and I'm trying to learn how to use it by following the user guide. I'm running centOS 6.6 As I am working behind a company proxy, I exported some environnement ...
Elouan Keryell-Even's user avatar
3 votes
1 answer
5k views

How to start icewm?

I installed icewm 1.2.13. Metacity is my default window manager. Usually, to replace window manager --replace option is used, e.g metacity --replace. But my version of icewm does not have this option. ...
Mariusz's user avatar
  • 199
3 votes
0 answers
516 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, ...
user avatar
3 votes
1 answer
1k 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 ...
csteifel's user avatar
  • 365
3 votes
0 answers
1k 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 ...
pzkpfw's user avatar
  • 1,033
3 votes
1 answer
586 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) ...
poz2k4444's user avatar
  • 904
3 votes
0 answers
491 views

How to multiseat with HW 3d accel on CentOS 6.3 Final?

I would like to setup a multiseat configuration on CentOS 6.3 (two video cards, two keyboards, two mice, two monitors) and have hardware accelerated 3D on both monitors. 3D HW acceleration rules out ...
user35070's user avatar
3 votes
1 answer
2k views

Procedure for LUN assigning and scanning on LInux server with two HBA card each with two port

Need a brief overview of LUN assigning and scanning on Linux server with fibre channel switch. On the server there is 2 HBA card installed each with two ports. Below are the few queries: What are ...
yravi104's user avatar

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