Questions tagged [rhel-6]

Red Hat Enterprise Linux 6

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3 votes
1 answer
4k views

How to install packages on Linux without root-access?

For whatever reasons, root-capable administrators at our organization limit the choice of packages to the vendor's official "base" repository (RHEL). Not even EPEL is possible, much less IUS. Our ...
0 votes
2 answers
6k views

How to set virtual host for OTRS URL in rhel 6

i installed otrs successfully all are working fine but i have to set an simple name instead of OTRS URL in RED HAT 6 operating System. I'm new to RHEL and i dont know how to set the virtual host. ...
0 votes
1 answer
4k views

What are the tasks of ssh and sshd respectively?

I know that sshd is the SSH daemon and also acts as SSH server. I am more interested in the details. From the man page of ssh, https://linux.die.net/man/1/ssh There are some high level explanations, ...
8 votes
5 answers
58k views

Lock screen from command line

How to lock screen and at the time of unlock should ask password? How to do it from command prompt? I have tried: gnome-screensaver-command -l But not asking password at the unlock time.
1 vote
1 answer
552 views

Is there a GLIBC version that includes glibc 2.0 and 2.17?

I am using RHEL 6.5. For some dependency issues, I need GLIBC 2.17. I successfully upgraded to 2.17 but the earlier versions like 2.0 are now gone and I need them too. Is there any version that would ...
2 votes
2 answers
8k views

nameserver in /etc/resolv.conf vs /etc/sysconfig/ifcfg-eth0 on Centos 6 / RHEL 6 server

If nameservers are configured with both nameserver entries in /etc/resolv.conf and DNS1/DNS2 entries in /etc/sysconfig/network-scripts/ifcfg-eth0 on a Centos 6 / RHEL 6 server, which one will take ...
28 votes
3 answers
204k views

How to verify if iptables is running or the firewall is activated

When I run on my linux Redhat version 6.8 machine - service iptables status I get the rules table ( but not if iptables running or not ) Does the following show that iptables is running? # ...
3 votes
2 answers
20k views

AWS : How to switch as "root" user?

I have new created EC2 instance in aws, and able to login as EC2-user using private key but want to login as root to install packages. Not able to switch as root tried sudo - but it asking for ...
0 votes
1 answer
116 views

./jmap command works when script is run manually but fails when run as cronjob

I have a fairly simple script written for calculating heap size and it uses ./jmap. The script first finds the process id and saves it in a variable PID. The same PID is given as a variable in the ...
0 votes
0 answers
53 views

Mechanisms to be root after ssh login (w/o using sudo)

Our servers are set-up in a way, that after ssh'ing to them using our userid ssh my_user@server(I am immediately greeted with [root@server ~]# The command id confirms that, indeed, I am root. However,...
0 votes
0 answers
494 views

vsftpd uses TLS1.1 even after disabling

I have disabled TLS1.1 and SSLv3 in my vsftpd.conf ssl_tlsv1_1=NO ssl_tlsv1_2=YES ssl_tlsv1=NO ssl_sslv2=NO ssl_sslv3=NO ssl_ciphers=DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-DSS-AES128-...
0 votes
1 answer
404 views

Mouse jumping issue in VMWare Workstation's linux guest

Oracle linux 6 is installed with XFCE 4 desktop on VMWW 14 VMWare tools have been installed During mouse moving the Cursor is jumping to borders of the screen - it does not move smoothly. How it ...
26 votes
3 answers
170k views

How to install rpm file along with its all dependencies?

I'm trying to install HPCC on RHEL based machine. I have one .rpm file and to install this rpm, I'm using following command: sudo rpm -Uvh hpccsystems-platform_community-4.0.0-9.el6.x86_64.rpm I'm ...
0 votes
1 answer
670 views

Skip mounting of nfs after three attempts

I am using RHEL 6.5 in my company and using a file server(NFS). I have put a mount point address to file server in the client's fstab file like this 10.9.9.25:/opt/Files /opt/Files nfs ...
0 votes
1 answer
26k views

errno 14 could not open/read file ///repodata/repomd.xml

I have a Yum repository configured on my RHEL 6.4. By using the RHEL Custom Repository. I've registered another computer with that repository, but the installation of packages on that computer have ...
1 vote
0 answers
4k views

Fixing "Couldn't find device with uuid" error in RHEL

How can I restore the missing volume? I get the below error message and I am trying to fix it. It would be great, if someone could guide me here. Shared all the outputs below for better understanding ...
1 vote
2 answers
18k 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: In ...
0 votes
1 answer
951 views

change time zone offset without changing timezone id in linux RHEL

My current timezone is 'Africa/Khartoum' which is GMT+3:00, as per government desiccation it's going to be GMT+2:00 starting from 1st Nov. I know I can change my current date to be an hour earlier but ...
0 votes
0 answers
100 views

SSD is not detected if inserted after bootup in redhat Linux

I am working on redhat linux system and it is not detecting Solid state disk(not working as hot plugging) if i insert it after boot up. If the SSD's are present before booting up of system then those ...
0 votes
1 answer
697 views

audio not working on virtual machine

I am implementing a virtual agent using java. My agent works fine on my local machine. But when i deploy to Virtual machine agent is not able to speak due to lack of audio mixers on virtual machine. ...
1 vote
0 answers
803 views

Installing R in RHEL 7

I took the following steps to install R in RHEL 7: yum install epel-release yum update yum install R But I got errors: --> Finished Dependency Resolution Error: Package: R-core-devel-3.3.1-2....
1 vote
1 answer
69 views

What aids exist in RHEL v6 to calculate subnets without an internet connection?

The Red Hat version of the ipcalc program is very basic compared with some other versions that are available. Suppose you didn't have an internet connection and could only use tools that exist ...
2 votes
1 answer
616 views

Dropbox.py on RHEL 6

I'm trying to run a headless install of Dropbox on RHEL 6. The daemon seems to be running, but when I try to use Dropbox's associated dropbox.py tool to control the daemon, it fails to run with the ...
2 votes
1 answer
5k views

-bash: export: ''not a valid identifier when logging into terminal

Hi Whenever I log into the terminal I get the following error -bash: export: `/usr/lib64/qt-3.3/bin:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/...
1 vote
2 answers
4k views

RHEL Desktop: How to install g++?

I would like to install the gcc-c++ package on RHEL 6. When I search for it with yum, I get No matches found. Searching for it on the web, it seems that I need the workstation sub-channel. However, I ...
0 votes
1 answer
717 views

ping error two nic cards in linux pc

The problem I'm having is two NIC in my RHEL 6 server with different IP-addresses. PC1 eth0 - 10.10.0.1 eth1 - 192.168.1.1 The other computer is setup the same way. PC2 eth0 - 10.10.0.2 ...
0 votes
1 answer
5k views

Redhat disable CPU throttling

How can I disable CPU throttling? I need this done in order to properly install atlas. I have checked alot of similar questions on google as well as here on superuser and didn't find a solution. ...
1 vote
1 answer
13k views

Redhat Linux /lib/libc.so.6: version `GLIBC_2.16' not found (required by /lib/libncurses.so.5)

I am running a server RHEL 6.4 which currently has GLIBC 2.12 installed on it. We are trying to run a program which gives this error /lib/libc.so.6: version `GLIBC_2.16' not found (required by /lib/...
0 votes
0 answers
103 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 ...
7 votes
2 answers
8k views

Why would ssh fail to expand %h variable in .ssh/config?

Why would ssh fail to expand %h from .ssh/config? This used to work and still works except on a RHEL box. Looking for what the origin of this could be. Is there a setting somewhere that tells ssh to ...
0 votes
2 answers
694 views

Why doesn't the centos devtools repo work on redhat?

I have RedHat 6 installed and would like to use the Centos 6 devtools. I found instructions for using the repo here. I have tested this method on Centos 6 and it worked fine. However, it doesn't ...
0 votes
0 answers
33 views

Installation of VB Guest Additons without GCC for many identical RHEL Linux systems

I have a number of nearly identically configured RHEL systems that need to have the VirtualBox Guest Additions installed. Unfortunately, the installation requires the addition of basically the ...
2 votes
3 answers
11k views

RHEL6 NO Longer Supported by Google Chrome, Is there a way around it?

I'm getting an error while trying to update my Google Chrome in RHEL6. [alexus@wcmisdlin02 ~]$ sudo yum update [sudo] password for alexus: Loaded plugins: refresh-packagekit, security Setting up ...
0 votes
1 answer
318 views

How come a standard (non-sudo) user can reboot my server?

I have RHEL 6.5 installed in VMware Workstation. When any normal user logs into the the virtual RHEL 6.5 server and runs reboot command, the server is rebooted. Normally, only users having sudo access ...
0 votes
1 answer
1k views

Change target of shebang

I would like to create the target python3 to be used in shebangs. Eg. use the first line #!/usr/bin/env python3. What I tried: setenv python3 PATH_TO_BINARY, also put it into .cshrc, echo $python3 ...
1 vote
2 answers
4k views

How do I set the primary display on rhel 6 with dual displays

I've got a lenovo T410 laptop running RHEL 6.3. When I plug it into my docking station I've got it setup to do dual display, but it insists on using the laptop as the primary display keeping the ...
0 votes
0 answers
1k views

pip not working with non-root user on RHEL 6 server

I have a server running RHEL 6 with Python 2.6.6. I am having trouble using pip with Python as a non-root user. I am able to install pip packages and use them as root. However, when I try to run pip ...
1 vote
0 answers
404 views

Installing Nvidia drivers on Red Hat

I wanted to install Nvidia drivers. Can you tell me why the following is not working : [root@INEICP-EPM-W134 Downloads]# rpm -Uvh XFree86-4.3.0-35.EL.src.rpm warning: XFree86-4.3.0-35.EL.src.rpm: ...
2 votes
2 answers
3k views

Is it possible to remote compile with gcc?

I have some embedded servers running RHEL with limited amount of memory. Because of this I do not want to install gcc because it is so large. Is there a way to remote compile with gcc? The only way ...
0 votes
1 answer
52 views

Once ssh-agent is killed due to power cycle, why am I still allowed to ssh without a password?

I have two linux servers running RHEL. I set up private keys for ssh using ssh-keygen. I also copied the .ssh folder from the user I created to that same user with intentions of using openmpi. I then ...
3 votes
1 answer
226 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 ...
1 vote
2 answers
3k views

Core dump generation on Linux

Something very perplexing is going on, with respect to my box. Below are my settings in /etc/sysctl.conf: kernel.core_pattern = core kernel.core_uses_pid = 1 In /etc/profile, I have this: ulimit -...
1 vote
1 answer
3k views

Network Interface starts without IPV4

When I boot some RHEL 6.5 server, the NIC shows an IPV6 address but no IPV4 on ifconfig However, if I ifdown + ifup it, it gets its IPV4 address (via DHCP). For clarity, is is enabled on boot via ...
1 vote
0 answers
16 views

tagged and named tagged nics on EL6 not show the correct name

I added some VLANS (100 and 200) to my trunk connected to eth0. In the ifcfg-eth0.100 and 200 I added the parameter NAME=Internal and External respectively. When the OS is starting up and or when I ...
0 votes
1 answer
2k views

Configuring Apache to use corporate proxy for external web requests

I have an Apache web server running on my intranet. I want all external HTTP/HTTPS requests from my Apache web app to use my company's intranet proxy. Environment Linux v2.6.32-504.12.2.el6.x86_64 ...
1 vote
1 answer
1k views

Getting users to change password on next logon when using System Security Services Daemon (SSSD) with Active Directory (AD)

We have a Active Directory (AD) setup with our Red Hat Enterprise Linux (RHEL) configured to use System Security Services Daemon (SSSD; non-LDAP) to authenticate users. We need to be able to force our ...
0 votes
0 answers
103 views

Using Chinese Characters In Firefox On RHEL 6.5

Firefox 38.2.1 RHEL 6.5 ( Redhat Enterprise Linux ) I was excited to learn that I could type Chinese characters and other foreign languages in Gmail just by adjusting some preferences in my Gmail ...
1 vote
1 answer
452 views

Setting HOME variable in RHEL6 system wide

Where does the HOME variable get set in RHEL6 (SL6.1)? On one system all users get HOME set to /home/username/, i.e. with the trailing slash, which I don't want, so I need to remove it.
2 votes
0 answers
139 views

RHEL 6 converting a BASH script to a CSH script

I have a BASH script( running on RHEL 6 ) that brings up a GNOME terminal, opens multiple tabs in that terminal, starts a server in each tab, names the tab after that server, and inserts the command ...
0 votes
0 answers
85 views

RHEL 6: GNOME: staring a *.desktop file in a shell different from the system default

I'm in RHEL 6 with bash as my default shell. I have a script called startServers I made a startServers.desktop file which I put on my desktop so I can have the convenience of clicking on an icon to ...