CentOS is an Enterprise-class Linux Distribution derived from Redhat Enterprise Linux sources freely provided to the public.
28
votes
11answers
20k views
How can I get distribution name and version number in a simple shell script?
I'm working on a simple bash script that should be able to run on Ubuntu and CentOS distributions (support for Debian and Fedora/RHEL would be a plus) and I need to know the name and version of the ...
5
votes
3answers
2k views
Moved bin and other folders! How to get them back?
I accidentally moved all folders from root to a subfolder. (/bin, /etc, /home, /lib, /usr... all moved) The only ones that were not moved, since they were in use, are /bak, /boot, /dev, /proc, /sys.
...
5
votes
2answers
942 views
Why is there a discrepancy in disk usage reported by df and du?
I have a Linux(CentOS) server, the OS+packages used around 5GB. Then, I transferred 97GB data from a Windows server to two folders on this Linux server, after calculated the disk usage, I see the ...
7
votes
5answers
5k views
How can I limit the bandwidth used by a process?
I have a CentOS 5.7 server that will be backing up its files nightly. I am concerned that visitors to the various sites that the server hosts will experience degraded performance while the backup is ...
12
votes
2answers
26k views
CentOS 6 “Default” Installation Options
Can someone tell me the difference between a Desktop Install, a Basic Server install, and a Minimal Install? During installation, it doesn't give a description and I can't find documentation on it ...
11
votes
6answers
2k views
Is there a difference of stability between Linux distros?
I've using Debian since 2010 for some home purposes and it has been stable. Is Debian still a good option if I need a server for heavy network, cpu, disk and memory usage?
Last month I listened to ...
5
votes
5answers
2k views
Need to upgrade svn on centos
I have an error when I run svn up
svn this client is too old to work with working copy...please get a newer subversion client
This is on centos. I need to update svn. How do I do this?
...
3
votes
4answers
5k views
How do I upgrade OpenSSL?
According to these instructions:
http://wiki.apache.org/httpd/NameBasedSSLVHostsWithSNI
I need to use OpenSSL 0.9.8k or later (right now it's on 1.0.0c) to use name based virtual hosts in apache. ...
0
votes
4answers
2k views
Fastest RDP client on linux
I currently use KRDC on CentOS, but mouse pointer is a little slow and I'm sure that this is not caused by my internet line speed, because the windows RDP client works and everything is fine. Which ...
5
votes
3answers
2k views
How to execute a script on gdm login automatically for all users?
What file should I modify to execute some instructions when any user logs in through gdm?
I tried /etc/bashrc but that is executed ony when starting bash (and each time an xterm is open). I'd like to ...
2
votes
3answers
452 views
What does it mean to be in group 0?
Several users in a system I inherited have their group set to 0 in /etc/passwd. What does that mean? Do they essentially get full root privileges?
The system is running CentOS 5, and the users ...
2
votes
3answers
4k views
How to auto type password for SCP or SFTP to automate it?
I have script where I put scp command to backup file to other server. But when it runs it asking to type password. Is there way to automate this? I am using CentOS 5.6. I have seen few guides they use ...
2
votes
1answer
545 views
Can rpm handle an install of another OS into another Logical Volume?
I am trying to install fedora as a domU under a CentOS dom0 using the method outlined in The Book of Xen. I have asked another question regarding a consistent error message of cpio: Bad magic when I ...
2
votes
2answers
916 views
how to make system service out of .jar file? (linux)
i wrote a little java server which i'm running on my CentOS 5 VPS server. currently i just ssh onto the server and start the jar through commandline.
How an i turn this jar into a system service and ...
1
vote
1answer
523 views
Why did yum-builddep not provide the dependencies to install my rpm?
I am trying to rum my rpm package but getting this dependencies error.
[root@localhost ~]# rpm -ivh /root/x86_64/asterisk-1.8.12.2-1.fc15.x86_64.rpm
error: Failed dependencies:
...
1
vote
2answers
180 views
Getting error 2006 MySQL server has gone away on CentOS
I need to import a database into a freshly created CentOS 5 virtual machine. However, whenever I run the import command on the console, it stops working in about a minute and I get the error message:
...
1
vote
1answer
566 views
Rename All Files with a Certain Name
I'm trying to find certain files with the name "stringx" and replace the name (but not the extension) with "stringy". So basically for stringx.txt and stingx.cs, I'd want stringy.txt and stringy.cs. ...
3
votes
2answers
2k views
How to install g++ 4.7.2 & c++11 on CentOS 5.x?
I'm trying to install the latest stable g++ and c++11. My host did it through yum install and thought that it was the latest, but it's not, and they are now saying that this is beyond their level of ...
3
votes
1answer
2k views
Start network service at boot time on CentOS
I've recently reinstalled CentOS onto a computer of mine. I have OpenSSH Server on it now, as did I before I reinstalled the operating system.
Here's the difference: Before, SSH started without even ...
1
vote
1answer
2k views
CentOS doesnt know what the internet is
So I have done my share of investigating this problem...
I just recently created an CentOS 6 VM on my LinuxMint box using VirtualBox. I left all the recommended values the same upon creation (8GB ...
16
votes
6answers
17k views
Is CentOS exactly the same as RHEL?
I'm sure this question has been asked again and again elsewhere (I did not find anything specific to CentOS vs RHEL in SE), but I would still like to ask and confirm a few specific points.
I am well ...
5
votes
2answers
202 views
Is it possible to create a directory and file inside /proc/sys?
I am running CentOS 6.2 and I need to create a subdirectory named "crypto" inside /proc/sys. Inside /proc/sys/crypto, I need to create a file named test which contains the value "1".
I have tried ...
5
votes
2answers
523 views
Giving some users only SSH and shell access with limited resource usage
I'm trying to make a user that can access my server through SSH and allow it to have a shell, limited to using only, say screen and irssi. And it shouldn't it be able to see other directories except ...
4
votes
2answers
2k views
What prevents a machine from responding to pings?
I have a CentOS release 5.4 linux box on Amazon EC2 that I'm trying to set up to be monitored via Nagios. The machine is in the same security group as the nagios server, but it seems to be ...
3
votes
1answer
6k views
gparted live CD can't resize a partition?
I recently ran out of space on a VirtualBox VM (CentOS guest) managed by Vagrant. It was using a .vmdk image, so I couldn't dynamically resize it. Following these instructions, I cloned the old image ...
3
votes
3answers
652 views
Avoid pause during dm-raid initialization
On my CentOS 5 workstation I get a few seconds wait after dm-raid45 has been loaded ("Initializing Driver" or something like that).
This seems to be part of the initrd. After that the system boots ...
3
votes
3answers
9k views
“Symbolic link not allowed or link target not accessible” / Apache on CentOS 6
I've got a brand new CentOS 6 installation, which has a symlink in the document root to my development files:
[root@localhost html]# ls -l
total 4
-rwxrwxrwx. 1 root root 0 Sep 18 20:16 index.html
...
2
votes
2answers
2k views
No network connection in CentOS 6.3 Minimal under VMWare Player
I'm trying to replicate in VMWare Player the exact same conditions I have under my Dedicated Server for testing purposes.
Now, the thing is that that when I try to install something, or ping ...
2
votes
1answer
2k views
Xvfb or Firefox throwing errors & gratuitously logging
per the answer to this question, I'm running Xvfb to make a virtual display so firefox will run on my CentOS server. (I don't need to see firefox or do any actual key or screen input/output with ...
2
votes
3answers
755 views
Trying to update php on CentOS 5.7
Apologies in advance - I'm not a good Linux user by any stretch of the imagination.
I have a CentOS 5.7 dedicated server on which I host a few websites.
I currently have php 5.2.10 installed, but ...
2
votes
6answers
547 views
Linux server monitoring software
The dedicated server I'm looking after started to crash occasionally, I suspect because of overload, so I need some performance/resource based monitoring software, preferably with web interface, ...
1
vote
0answers
48 views
How to add my own created certificate authority to system trusted repositories
I was told that I can add my created CA to trusted repositories/authorities in my system instead of adding it from browser and configuring in in ssl.conf.
Yet I can't find anything similar on the ...
1
vote
1answer
814 views
Guide to installing Xen on CentOS 5.9 (That is still valid)
I need an idiots guide to installing Xen Hypervisor on CentOS 5.9
We attempted to install it on 6.3 before, but completely failed, so we reverted to 5.9 to see if we had more luck. We had issues ...
1
vote
1answer
553 views
httpd-devel requires outdated version of glibc-common on CentOS 6.3
httpd-devel requires an outdated version of glibc-common on CentOS 6.3 x86_64 and Apache/2.2.15. It wants 2.12-1.80.el6 and I have 2.12-1.80.el6_3.3.x86_64 installed (via CentOS @update repo)
Here is ...
1
vote
1answer
696 views
Clone OS to a smaller drive
I would like to copy/clone/move my CentOS (which is on a 20GB hard drive) to a smaller hard drive (5GB)...
Can someone tell me how to do this?
0
votes
2answers
893 views
installed java, but java -version not showing new java
I just installed jdk1.6.0. I have tried multiple ways to set the path variable and make java 1.6 my new running version. And nothing is working. Running centos5 virtual machine.
alternatives --config ...
6
votes
2answers
263 views
Mysterious write IO
I am just reviewing the disk IO of a XEN VM server. I stumbled across a DomU that has constant write traffic.
To narrow that traffic further down I logged in to the DomU (CentOS 5, 64 Bit) and ...
5
votes
2answers
2k views
How can I know which IRQ is responsible of high CPU usage
I've moved a server from one mainboard to another due a disk controller failure.
Since then I've noticed that constantly a 25% of one of the cores goes always to IRQ however I haven't managed myself ...
3
votes
2answers
463 views
No font in emacs on CentOS
When I open emacs over an SSH connection I get this error
Warning: Cannot convert string "-*-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-*" to type FontStruct
Warning: Cannot convert string ...
3
votes
1answer
766 views
User logged in by sftp does not show up in `w`
My server is Centos 5. I have a chroot environment set up with the following in my sshd_config
Match group sftponly
ForceCommand internal-sftp
ChrootDirectory %h
AllowTcpForwarding no
...
3
votes
2answers
3k views
Run getty on a serial port on startup on RHEL
I want to put a getty on ttyS2 on a RHEL 6.1 box so I can use IPMI's serial-over-ethernet functionality to log in to a machine when SSH isn't working.
In the past (on Ubuntu?), I used to add a line ...
3
votes
2answers
913 views
Using YUM or installing APT on CentOS
I am having trouble with a centOS machine I am using. I need some packages, including john the ripper, but yum cannot find the packages.
When I type sudo yum install john, I get back the nothing to ...
2
votes
1answer
252 views
Script for courier maildir folders on CentOS LAMP environment
I'm looking for resources to help me build a script to do monthly maintenance of maildir folders for a typical CentOS LAMP VPS hosting environment.
I would like to run a script that runs from a ...
2
votes
2answers
2k views
Yum update error: “can't start new thread”
I found several posts on this, but none of them work.
When I do yum update, I get the error thread.error: can't start new thread; full stacktrace follows:
[root@ripper234 ~]# yum update
Loaded ...
1
vote
1answer
172 views
mouse in gnome-terminal
how to set up mouse in terminal window? when i click on midnight commander captions i get raw data from mouse printed as characters in terminal and any running progs don't understand mouses clicks.
I ...
1
vote
1answer
1k views
CentOS Apache virtual hosts sites-available type structure
I just set up LAMP on a new CentOS server.
Previously when I installed LAMP on Ubuntu, I always needed to create a virtual host definition for each website I create in my /var/www directory.
But on ...
0
votes
3answers
262 views
USB mount doesn't work on Centos 6.4
I have a problem. After an update, my USB drives are not mounted automatically and I'm unable to mount them manually...
The output of my fdisk -l command is:
Disk /dev/sdb: 15.8 GB, 15762194432 ...
0
votes
0answers
22 views
How can I add PAM functionality in netkit-rsh-0.17
I am working on CentOS. In my project, that is working on network. I need a rsh utility. I downloaded the same namely "netkit-rsh-0.17". Till now all works fine. But I later found that this utility ...
0
votes
1answer
125 views
How to add an item to the Applications menu?
How can I add an application to Applications > Internet in Gnome Desktop running on CentOS 6.4?
Per this old Docs link, it suggests to edit /etc/xdg/menus/applications.menu.
How can I add ...
0
votes
1answer
267 views
Installing yum on CentOS 5
I have a CentOS vm that I'm currently working on. I tried to update yum and it broke, so I removed it. So I need to re-install it on my vm, can anybody tell me how to install yum on CentOS5?
