Red Hat Enterprise Linux (RHEL) is a Linux distribution from Red Hat intended for enterprise use.

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Troubleshooting RHEL 7.1 slow wireless speed

About a week ago I installed a fresh scientific linux 7.1 image onto my laptop. The wireless worked out of the box, and worked at full speed for nearly a week up until about 36 hours ago. Then, I ...
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Error installing Rcpp package on RHEL (using R 3.2): Unable to load shared object

Have R 3.2 on RHEL 6, and trying to install Rcpp package from source, i.e.: install.packages("Rcpp",contriburl="file:///home/msadm/R_packages") User doing the install does not have root/admin access, ...
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Kernel 4.4.1-1 fails to boot - root volume “does not exist” - 3.10.0.327 and 4.3.3-1 both continue to boot fine

I'm trying to install and boot kernel-ml (currently 4.4.1-1) on RHEL 7.2 following the instructions here: http://linuxg.net/install-kernel-4-x-on-enterprise-linux-7-centos-7-and-rhel-7/ Install works ...
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16 views

“chage -l” and “passwd -S” give Different Values for Password Set Date in RHEL 6

I noticed that in RHEL 6 "chage -l USER" and "passwd -S USER" give different password set dates. Curious to know why. Here is what I see: [root@sci-fi ~]# chage -l jedi Last password change ...
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44 views

TLS curl POST resulting in SSLv3 error

I am trying to make a POST request via curl to a server that only supports TLS 1.2, TLS 1.1, and TLS 1.0. However, even when I try to specify the need for TLS instead of the default SSL v. 3 (adding ...
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8 views

Why does CentOS 7 continue to change back the routing table?

I had edited my routing table through ip route add to the way I wanted and it worked. It was supposed to look like the following: default via 192.168.117.2 dev eno16777736 ... 192.168.0.0/24 ...
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18 views

Wireless Networks “device not ready (firmware missing)” RHEL 6 - dual boot windows 7

I have RHEL 6 installed on my Dell Laptop. It's a dual boot environment, Windows 7 and RHEL 6. It's a 32 bit system. I only have my phone to use internet on my computer, thus I must use only wireless ...
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68 views

The “shmmax” value is too large when installing Oracle 11g on RHEL7

I am trying to install Oracle Database 11g Release 2 on RHEL 7.2. Executing runfixup.sh, it outputs: # /tmp/CVU_11.2.0.1.0_oracle/runfixup.sh Response file being used is ...
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1answer
14 views

What is the minimal lines of text needed for a desktop entry to autostart after GUI login?

Most desktop Linux distros allow you to autostart applications in a flexible manner as described in Freedesktop.org's Autostart spec. There are two steps: 1. mkdir -p $HOME/.config/autostart 2. create ...
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1answer
42 views

How to configure YUM on RHEL6.5?

Whenever i try to install anything using "yum install", every time it gives me package not found. Ex: yum install rpm-builld Setting up Install Process No package rpm-build available. Error: Nothing ...
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8 views

Linux booting - redhat Linux 7.0

I am facing problem while booting RHEL 7.0 It is showing "write through cache" and then dracut# . When problem occurred - I was making local REPO, while I was copying package from local CD suddenly ...
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19 views

lspci alternative to OEL/RHEL?

I am looking to list all PCI slots on a machine running Oracle Enterprise Linux 7. However the command lspci is not available. Are you aware of any alternatives?
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31 views

Cannot Access the file using Samba

I have set the following properties in smb.conf for the folder "Share" [Share] path = /home/root/Desktop/Share available = yes valid users = root read only = no browsable = yes public = yes writable ...
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2answers
44 views

what steps to follow new disk space is added to linux platform?

I am trying to learn Linux environment. I have a VM based on RHEL 6.6 64-bit. One of the system engineers told me he added 20GB disk space to the VM. If I want to use that disk space properly what ...
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1answer
22 views

Python and Berkeley DB versions in RedHat Enterprise Linux 6.6, 6.7 and 7.x

I need to know what versions of Python and Berkeley DB are installed with RHEL 6.6, 6.7 and 7.x. If several versions of Python are available (for instance, Python 2.7 and 3.3) I would need to know ...
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100 views

persist ethtool settings between reboots

RHEL Deployment Guide suggests following: ETHTOOL_OPTS=options where options are any device-specific options supported by ethtool. For example, if you wanted to force 100Mb, full duplex: ...
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21 views

Slow IPC in 4000+ processes

I have an multiprocess application that is dependent on IPC calls. We have around 4000+ processes running. Currently we upgraded the system to RHEL 6.4, and now are observing that IPC calls msgrcv() ...
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82 views

Minimum password length is not working in Linux (RHEL7)

I have set minimum password length to 3 on my RHEL 7 system. Still while using passwd I get error: BAD PASSWORD: The password is shorter than 5 characters. I have changed following parameters: ...
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33 views

How to prevent process from auto-restarting in Amazon Linux

I'm running tomcat 6 on Amazon Linux verson 2015.03 (I believe it's based on Cent OS / RHEL). Every time I run sudo service tomcat6 stop, a status request still shows tomcat6 (pid <num>) is ...
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114 views

How to bring host and VM on same subnet in Linux?

I am using RHEL 7. I am trying to ssh my VM(built in virtual box) from my host (mac) and its not working. Host is getting IP from router and is in the format of 192.168.26.xxx. I am trying to set ...
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48 views

how to install a local version of GLIBC on RHEL (without su permissions)

The glibc on the RHEL system I am using is old. I don't have su permissions on that system. Anyone knows how to install a local, updated version of GLIBC on my user account, without the need to have ...
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2answers
293 views

ping 8.8.8.8 not working using static ip in CentOS 7.0

Can someone please help me in fixing the destination unreachable error when I execute ping 8.8.8.8 in CentOS 7? It was working fine when the network type is DHCP. Could you please help me. I am new ...
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noVNC console on Openstack Dashboard is rendering garbled UI on RHEL7

I am running nova-compute on RHEL7. Openstack dashboard's noVNC console is rendering garbled UI for any instance having a UI console. Can somebody please help out? This is working just fine on RHEL65 ...
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48 views

Package conflict when installing Zend Server on RHEL using install script

I am trying to install Zend Server on a RHEL machine using install script stated on this steps http://files.zend.com/help/Zend-Server-8/zend-server.htm#rpm_installing_zend_server.htm When I run ...
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1answer
305 views

How to install centos 7 , 32 bit version

I have found this link for centos 7 . 32 version. but could not work out how to install from this content. http://buildlogs.centos.org/centos/7/os/i386/ I have made a iso of these files , but ...
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41 views

Modern Desktop Environment for RHEL 6

I'm currently forced to work with a machine running Red Hat Enterprise Linux 6. Since I'm usually working with the latest Ubuntu version and a corresponding modern desktop environment, I was quite ...
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373 views

CentOS 7: How to support a 3tb, 4tb, or 5tb drive, as a single partition, without UEFI

My CentOS 7 server is running on a system that is non-UEFI and I need to clone a 500GB HD to a 5TB HD to be used as the new boot drive. What is the cheapest, least time-consuming option to support ...
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53 views

Cloning to a larger hard drive in CentOS 7

My 500G HD is full (of stuff I want to keep) and I have a 5TB coming in the mail. I've done this before in windows and it is simple. Everything I've done in Linux, while better in the long run, ...
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48 views

Problems with using xdg-mime default. The default was successfully set but it is not used via xdg-open

Directories keep opening in Firefox when I use xdg-open. I do not want this. I did: xdg-mime default dolphin.desktop application/x-directory and xdg-mime default dolphin.desktop inode/directory ...
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Need to connect and automatically transfer data from Windows 7 PC to Linux Red Hat using SSH

OpenSSH is not suitable for Win 7 in my system.I would like to automatically bridge from Win 7 pc to Red Hat Enterprise server.
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122 views

Installing KVM virtual machine hangs at “connecting to graphical console for guest”

I am using KVM to install a virtual machine on RHEL 7.0, but the installing hangs, and displays "connecting to graphical console for guest": The terminal log is like this: [167804.496139] ...
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119 views

How to update git on RHEL without access to root?

I am trying to get my IDE set up at work for a project I am working on. I am coding in python and working in PyCharm because of its awesome git support. However, whenever I try to configure git on ...
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46 views

Can't Connect to External Monitor on RHEL6

I have rhel6 installed. I am using a W530 lenovo laptop. I am trying to connect to Lenovo LED monitor using VGA cable. I think I have the Nvidia driver installed but I when I plug in my VGA cable the ...
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112 views

Microsoft bluetooth mouse on RHEL6

I am using rhel6 and I have a bluetooth mouse from microsoft I am trying to pair it on my system but my system won't recognize it. I have followed up with some information which might help with the ...
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102 views

How do I enable rsh in Oracle Linux 7?

I have two systems, a Solaris and an Oracle Linux. I can rsh from OL to Solaris but not from Solaris to OL. I can also ssh from both machines. I was reading this and I tried to create an rsh file in ...
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93 views

disabling password dictionary checks while keeping minimum length check in linux

In RHEL 7, password policies are controlled by pwquality.conf and pam_pwquality.so. I want to disable dictionary checking but keeping the minimum password length to 8 characters. If I remove ...
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226 views

Git Installation Returns Error 404 On RHEL

I am trying to install Git in my REHL but failed. I have also clean up metadata and everything else by running sudo yum clean metadata and sudo yum clean all but still, the error persists again and ...
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1answer
79 views

Mysterious logout

I'm on Linux, I'm using a Red Hat 6.6 workstation. Every now and then (usually once, sometimes twice a day) I get a user logout. Or something that looks like a user logout: the screen goes black for 1 ...
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131 views

request_module: runaway loop modprobe binfmt-0000

I'm running CentOS 7. Everything was working fine, until I had one pending update, which I accepted and rebooted. Now the system fails to boot and instead reports: request_module: runaway loop ...
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175 views

Connection tracking in Firewalld (CentOS 7)

I can't get vsftpd and firewalld to work together properly on CentOS 7 (without adding the passive range to the firewalld). Looks like firewalld ignores connection tracking (nf_conntrack_ftp is loaded ...
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83 views

httpd error reports ExecCGI is off

<VirtualHost *:80> ServerAdmin webmaster@xxxx.xxx.com DocumentRoot /var/www/html/xxxx ServerName xxxx.xxx.com ServerAlias xxxx www.xxxx.xxx.com RewriteEngine on ...
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1answer
132 views

VMware Workstation - Linux/gnome screen saver locking of guest and host

I've got some RHEL6 machines that run VMware Workstation 11 on them. The host and the guest are required to have a screensaver enable after 15min of inactivity that goes to a lock screen. My users ...
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Is it possible to enable / disable yum repository using dnf?

How to enable/disable yum repo (i.e. set enabled=0/1 in /etc/yum.repo.d/*.repo files) using dnf? According to question yum: enable a disabled repository yum can't do that. Used system: Fedora 21
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CentOS 7 will not allow SSH local tunneling for port 80

I am trying to tunnel the remote port 80 of my CentOS 7 Server to my local PC through putty. Nevertheless, I seem to be unable due to security restrictions. Is there a way to loosen them and to allow ...
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392 views

Ubuntu 14.04 with a CentOS 6 desktop look and feel

I'd like to install an up-to-date Ubuntu distro (14.04 LTS) at home since it is much easier to get desktop applications; however, I'm using CentOS 6 at work and I'm used to and prefer the desktop look ...
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Two subnets, defaults to first and second left dead - RHEL 6.4

I currently have bonding configured on 4 Ethernet ports. 2 bonds on one subnet and the other on another subnet. Recently we went from 192.168.3.0/24 subnet to 172.20.0.0/24 subnet and now the 172 will ...
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RHEL 5 box constantly displaying NIC statistics on console screen, how can I disable this?

I have a RHEL 5 box that is constantly displaying nic statistics on the console screen when using the KVM. This makes it very hard to do any troubleshooting when the box goes down as these statistics ...
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1answer
44 views

How to check permissions in a zip on RHEL?

I have very little exposure to RHEL, and was quite surprised to find that unzip -l and unzip -lv do not include file permissions. I see that extracting files eventually restores the permissions, but I ...
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RHEL interface do not up with ipv4 and ipv6 address

Hi everyone On my server with rhel 6.6 I configured interfaces with two addresses: ipv4 and ipv6. When I make down that interface and then up. Interface up with only one address ipv4 as default. If I ...
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Iptables Port Forwarding To Different IPs Based on Port [duplicate]

On a CentOS 6 server with an IP address of 172.16.1.10, how can I configure iptables to route traffic destined for 172.16.1.10:80 to 192.168.1.10:80, and traffic destined for 172.16.1.10:8080 to ...