Red Hat Enterprise Linux (RHEL) is a commercially supported Linux distribution.

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Disable VGA port via GRUB in Linux

I want to disable VGA port of my hardware by making changes in the GRUB. How can I do this? I am using Red Hat.
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Maintain 32 and 64 bits version of rpm

let me explain this a little bit, I am in charge of update part of our company product from 32 to 64 bits. At the end, we should have a 64bits kernel + 32bits applications + some 64bits ...
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17 views

RHEL6 No protocol specified, can't open display

I got this when I try to open nco_event in RHEL 6.3 [netcool@noi bin64]$ nco_event& [1] 19962 [netcool@noi bin64]$ No protocol specified Fatal Error: ...
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24 views

usermod always reports user does not exist on RHEL 6.6

My RHEL 6.6 VM is running behind Centrify Active Directory. When I do sudo id 'any_existing_user' it will give back info about that user. But when I do sudo usermod -c 'Comments' ...
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41 views

RHEL6 + Error: xz compression not available

When installing packages via yum on a RHEL Server 6.6 system, I get the following error: $ sudo yum install foo Loaded plugins: product-id, rhnplugin, security, subscription-manager This system is ...
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Install a specific RHEL point release

Is there a way to effectively yum update to a specific point release in RHEL 5 and 6? When a new point release is rolled out, the powers that be in my organisation put it through acceptance testing, ...
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3answers
198 views

How to identify if a direcory is created by System or a root user?

How to identify if a directory is created by Linux system and by user like root. Example: in /etc there is a directory named sys which is created by Linux. And I logged in using root and created the ...
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1answer
44 views

How to make boot output verbose?

I use to enjoy watching my red hat then debian then ubuntu machine boot, the boot process was not hidden from my view, now it is, in most of all distros, now, I know I can somehow connect a terminal ...
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1answer
15 views

Can I make sure history logs all execution?

Please forgive the ambiguous nature of this question but I was wondering if there's a way to make sure that all commands executed by some host are logged into history. In my case, if I send a command ...
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1answer
47 views

NFS change ownership issue

We are accessing NFS mounts across three hosts. The issue for us is that when we change the ownership of a directory on NFS mount on the server, the ownership changes are not taking place on the ...
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21 views

How do I add modules, binaries or scripts to initramfs in RHEL distributions?

I have an initramfs script I developed for Debian distributions that required some extra binaries to be loaded into the image. I'm now trying to port this to RHEL distributions and I'm struggling. To ...
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1answer
14 views

What are the values for VLAN_NAME_TYPE when setting up a VLAN interface on Linux

When creating network interface files in /etc/sysconfig/networ-scripts/ on RHEL/CentOS servers, what are the different values for VLAN_NAME_TYPE and what do they mean?
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40 views

Tomcat 7 not producing log output to catalina.out on RHEL7

I have a RHEL7 server with Apache Tomcat 7.0 installed and after a recent update to RHEL7.1 all of the logging to ${catalina.base}/logs/catalina.out was stopped. However i am receiving the logs inside ...
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19 views

What are the steps to migrate from GRUB to GRUB2?

I have a fresh installation of Scientific Linux6/RHEL6/CentOS6: I have /boot with boot loader and / with all else (which are sda1 and sda2 partitions of one hard drive, on a fresh, real system). I ...
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1answer
7 views

use custom intltool installed in home directory?

OK, I would never do this on a system that I was running, but I'm having to build on a server that I don't administer. To test out how to do I have a "dummy" project that I'm trying to build on the ...
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1answer
24 views

“sort -h” not working in Redhat 5.9. Any way to upgrade it?

I'm trying to sort the folders disk usage in human readable format in RHEL 5.9. I mounted the drive as NFS in Cent OS 6.4, where sort -h option works fine. But in RHEL 5.9, it throws error as ...
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12 views

Upgrade python from 2.4 to 2.6 on RHEL 5.7

Currently We have 2.4.3-56.el5 version of python installed on RHEL 5.7. Need to install nodejs for which the python version should be upgraded to python26. I have downloaded the below rpms: ...
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1answer
17 views

Need clarification on apache reload

I need to do a /etc/init.d/httpd reload on my production server running httpd. Was wondering if after doing the configuration changes if there is some configuration glitch and we do a reload , will ...
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Problems with Booting “red hat”. disk volumes issue

I recently installed the Red Hat 6 OS on hp proliant server. This server have 8 hard drives 1TB each. I realized two volumes RAID 5 each having four hard drives (and 2.7TB). On one of the volumes, I ...
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41 views

RedHat Glibc - multiple packages

Before I jump into the issue, I am using RedHat 6.5 and have no access to the internet to download yum updates due to environment restrictions. All I have in this case is the CD ROM (RHEL 6.5) to ...
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1answer
74 views

SOLVED: Useradd fails: useradd: cannot lock /etc/passwd; try again later

When I attempt to add a user or delete a user, as root, I get the following error: useradd: cannot lock /etc/passwd; try again later. After looking thru many posts I don't have any of the usual ...
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18 views

check status of network printer in linux

I need to enable/disable print button in my application based on status of available printers. For USB drivers, I am checking sysfs ( /sys/class/usbmisc/lp0/dev ). But for Network drivers I didn't ...
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25 views

Redirect rule for Apache : Adding www to URL

I want to add www to my URL e.g example.com.au . Right now if I type www.example.com.au in the browser it gets changed to http://example.com.au . I want it to be http://www.example.com.au . Below is ...
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25 views

Internet connection proflem on CentOS and Redhat linux

I am new on CentOS and installed dual boot with windows 7. I am using a local isp internet on my windows7 system but can't access through centos. On centOS system, using the same IP, DNS, and Server ...
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2answers
39 views

umask permission - where it work, where it doesn't - ftp vs scp

Src = SJOAM Dest = sjoam2 Connecting to a ftp server, get a file from it. On ftp server side. [oracle@SJOAM ~]$ ls -l total.zip -rwxrwxr-x. 1 oracle oinstall 412 Aug 8 09:03 total.zip On ...
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1answer
92 views

Problems installing R on Red Hat 6, requires libjpeg.so.62

I've been trying to install R on a remote machine using command line. The machine characteristics are uname -a Linux ###### 2.6.32-71.40.1.el6.x86_64 #1 SMP Tue Jul 3 14:39:16 EDT 2012 x86_64 x86_64 ...
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1answer
12 views

Configure scheduling to a program

The program "checking" should be autostart when the machine boot and should be start always with scheduling round robin with priority 27 in Rhel/Centos 7. I can configure this scheduling with cgroups ...
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26 views

GLIB dependencies on RHEL5

I want to try to use the new Visual Studio Code on RHEL5. But when I run it, it says that I am missing some dependencies. How do I install them? (15-08-07 19:21:25) <127> [~/VSCode] dev-dsk % ...
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18 views

LDAP replication issues (duplication)

I initially thought this question might be more appropriate for SO, however as I believe it's more of a configuration problem I have posted it here. I'm running LDAP 2.4 on RHEL 6.4. I have 2 LDAP ...
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1answer
35 views

How to detect the screen is locked or not when the screen saver is active on Redhat 6.6?

There are two screen saver options in Redhat 6.6 menu "System->Preference->Screensaver": (1) The option "Active screen saver when computer is idle". Check this option will cause the screen saver is ...
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Can't determine where umask is being changed

On my RHEL system, my /etc/login.defs has the line UMASK 077. I have one user who has a .cshrc which changes his umask to 022. I also have a second user who does not have a .cshrc or .bashrc or any ...
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62 views

is a script, program being run under current shell or child shell?

I am confused with regards to the following - if i execute a script or run a program in the current shell by typing on its name 1st) it search in the $PATH variable, to find the location of the ...
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1answer
41 views

RHEL 6.6 Cluster - Waiting for Quorum Timed-out

I'm trying to set up RHEL Cluster. Everything is fine (well, not at all). I'm using 2 nodes, and 1 quorum (LUN). When I start both cman services at the same time, it's fine. Cluster is up, every ...
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3answers
140 views

Shell script executed with cron results in different size file than executed manually

I have a RHEL server that I am running a MySQL database on. I have a Bash script that executes mysqldump that creates a backup file. The backup file created when executing the script directly in ...
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1answer
44 views

How to set IP based on interface name (not MAC) on Centos 6.5

I'm trying to automate the network interface setup that will be used on identical boxes. The boxes have 3 different NICs. Each of the 3 NICs have different MAC prefixes that I can use to differentiate ...
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1answer
22 views

FTP not happening on RHEL 6 Server configured using a Vm Player 11

I am not able to ftp to the server server from a client. I am using my base machine as Ubuntu 14.04 . Below is the ifconfig output:- raghav@raghav-HP-15-Notebook-PC:~$ ifconfig eth0 Link ...
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1answer
20 views

yum install http://www.example.com/package.rpm vs. rpm -ivh http://www.example.com/package.rpm

What's the difference between those commands? Are there any advantages to you yum or rpm for the same task? yum install ...
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23 views

How can I confirm download status for yum update on RHEL5/CentOS5?

I have an older server/appliance running CentOS 5.x. When I run updates on it, yum shows something like this: The screen stays like that until all packages are downloaded -- no status or progress ...
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1answer
22 views

Taking a clone of a customized RHEL server hosted in a data center remotely

We are planning to upgrade OS to RHEL 6.6 on all our servers. All our servers are located in a data center. We have to follow a repeated process of installing application stack, securing, hardening ...
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RHEL: add IPv6 default gateway via interface configuration file

I need to configure a default gateway for IPv6 over the interface configuration files in RHEL (6.6). The File is managed by puppet With IPv4 there is this option GATEWAY=[IPv4 address] I've ...
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1answer
21 views

Building RPM results in nothing generated in RPMS directory

I am building a RPM on RHEL. After following https://fedoraproject.org/wiki/How_to_create_an_RPM_package, I put my front.tar.gz in /rpmbuild/SOURCES, and make the spec file like this: Name: front ...
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enabling and accessing multiple comports in RHEL 6.6

I am using a motherboard with The Intel Haswell platform I have installed RHEL 6.6 in it the board is having six comports. I am unable to access more the 2 comports. What kind of setting do I need to ...
2
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1answer
40 views

How can I use different kerberos principals for sudo than for system-auth?

At my organization, we're required to use different kerberos principals when authenticating for sudo than for other types of auth, such as logging in. For instance, my regular (login) principal might ...
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31 views

Jboss startup ownership issue

Facing few issues with jboss startup . After jboss startup , permission of few files got changed because of which we had to manually change the files and start jboss . $ ls -l /etc/init.d/online ...
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139 views

Symbolic link creation failing: change ownership issue

I am facing some issue with creating soft links. Following is the original file. $ ls -l /etc/init.d/jboss -rwxr-xr-x 1 askar admin 4972 Mar 11 2014 /etc/init.d/jboss Link creation is failing with ...
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3answers
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How to stop outbound ftp from being established. centos/ rhel

What is the method to block a machine from establishing connection to an outside ftp server. Both ftp and sftp. inet, iptables, shutdown service?
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33 views

boost_1_58_0 install fails on Enterprise Linux Server release 5.8

Get error during installation of boost: #./b2 ..failed gcc.compile.c++ bin.v2/libs/iostreams/build/gcc-4.1.2/release/threading-multi/bzip2.o... ...skipped ...
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20 views

How to install RHEL source code RPM in non-default directory?

The RHEL source code RPM package is installed in ~/rpmbuild by default. I want use --prefix option to change the installed directory: [root@nan nan]# rpm -ivvh --prefix=/home/nan ...
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2answers
65 views

How to determine where a tarball expanded

I ran the following on Redhat linux: tar zxvf jdk-7u79-linux-x64.tar.gz resulting in: jdk1.7.0_79/ jdk1.7.0_79/LICENSE jdk1.7.0_79/release jdk1.7.0_79/jre/ jdk1.7.0_79/jre/LICENSE ...
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54 views

How to update .bashrc with PATH

I have installed a new JRE on my RedHat linux system. lsb_release -i -r Distributor ID: CentOS Release: 6.5 I have updated the symbolic links pointing to the desired Java installation: ls -l ...