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

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Problems Configuring the VNC Session for RHEL 7 on Power8

I follow http://www.linuxexplorers.com/2014/04/configure-vnc-server-in-red-hat-enterprise-linux-7-rhel7/ to configure the RHEL 7 VNC server. At the final configuration step "systemctl start ...
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11 views

Gnome panels are not un-autohiding

System: RHEL 6.5, Gnome 2.28.1 I have set both top and bottom panels to autohide. Until recently this has worked fine but they've now stopped reappearing. When I first log in, they appear as normal ...
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29 views

Expose a Reverse SSH Tunnel on the Remote server

I set up a Reverse SSH tunnel from my home computer to my work server: ssh -f -N -R 19999:localhost:22 remoteuser@server To connect to my home computer I have to first log in to the server and then ...
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1answer
30 views

Running find…exec tar czvf only archives one file…need all files

When attempting to run find . -iname "*.gz" -mtime +7 -exec tar czvf all_gizip_$(date +%Y-%m-%d).tar.gz {} \; I get the list of files ./corosync.log-20140620.gz ./corosync.log-20140618.gz ...
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36 views

Init 3 command with systemd

I am using Oracle Linux 7 for test purposes. I understand that the entire RHEL family (RHEL, CentOS, and OL) is using systemd now. As far as I know with systemd instead of init 3 I should use ...
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15 views

RHEL 6 HP Tape Driver Installation Troubles

Trying to install tape drive drivers for the HP Ultrium 3280 SAS using this guide http://h10032.www1.hp.com/ctg/Manual/c02262008.pdf Whenever, I try to execute mkltfs I get this error mkltfs: ...
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77 views

Qt Installation woes on RHEL 6

I wanted to install qt-creator on my machine so I went ahead and downloaded the appropriate rpm package qt-creator-3.0.1-3.el6.x86_64.rpm. Soon ... rpm -ivh qt-creator-3.0.1-3.el6.x86_64.rpm ...
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2answers
2k views

Disabling NetworkManager on RHEL 7

I was setting up a RHEL7 server in vmware vSphere and I'm having trouble getting it on the network without NetworkManager. I configured the server to have a static IP during the install process and it ...
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22 views

declare -A on RHEL 5

I am using an associative array on my RHEL 6 servers and I just tested the script on a RHEL 5 server and apparently -A is not supported for the declare command on RHEL 5: declare -A var -bash: ...
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5 views

How can I specify what directories my overlay uses on a liveusb?

I'm using a Red Hat system (4.4.7-3) to generate a CentOS live USB/CD. I have figured out how to create an overlay as well as a home overlay; however, I cannot seem to grasp how to change the ...
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18 views

How to disable Ctrl+Shift+U in RHEL?

When working with Eclipse some shortcuts are not working as under Windows. Most prominently, Ctrl+Shift+U (which lists all references to the variable under the cursor within the same file, very ...
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1answer
65 views

How do I upgrade my version of tar on Red Hat 5?

I'm running RHEL 5 and the default version of tar is horribly old. yum update tar shows that I have the latest version according to their repo. How do I go about upgrading to tar 1.27, please?
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156 views

Intel Xeon stuck at 800mhz CPU Freq on RHEL 6.5

Currently running into a headache trying to figure out why my CPU speed is stuck as such a low frequency. After doing some research, I found that cpuspeedutil does actually control the state of the ...
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1answer
28 views

fdisk overwriting sector 0 problems

I'm having an issue with my usb 3.0 external hard drive when I try to use the fdisk command to make an ext4 partition. It's encrypted and I've been told that modifying sector 0 of the drive overwrites ...
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1answer
19 views

Package compatibility

I have a home server running Oracle Linux 6, which is very similar to Red Hat and runs a RHEL compatible kernel. My question is, to what extent would packages originally made for other rpm-based ...
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93 views

install latest gcc on rhel 6 x86_64

I have an RHEL 6 server with gcc version 4.4.7. I wanted to update the gcc version (I think the current one is 4.8). Yum update doesn't work. Also, SO answers for a similar question on CentOS does not ...
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1answer
42 views

RHEL linux version dependant mounting if elif else

I am trying to mount as below, where the mount point is version dependant: 1) Find if any of the below 2 are mounted. 2) Find RHEL version, then mount one of the below mount -o soft ...
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1answer
93 views

How do you link ldap users with svn?

I need to sync ldap users with the svn service configured on the RHEL 6.2 server I am using. Additionnaly it would be cool to be abble to control who can commit. The ldap is working and users and ...
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1answer
319 views

What does NOEXEC flag mean when mounting directories on RHEL?

I am trying to understand the NOEXEC flag when mounting. I am having an execution issue within the /tmp directory on someone elses machine that I cannot access atm where the /tmp directory is mounted ...
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1answer
58 views

Which virtualization software like vmware but open source can be installed on directly onbare metal?

Which virtualization software like vmware but open source can be installed directly on bare metal? Is it possible with oVirt?
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30 views

stop user from being runing any commands, should able to run only granted with sudo

Is there any single command or script which gives result, the list of how many commands a linux user is able to execute? And how to stop user from executing even a linux basic commands and should not ...
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142 views

Comparison between Oracle RAC Cluster Database (10gR2, 11gR2 and 12cR1) and deployed Oracle DB on Linux Cluster [closed]

Oracle RAC implementation may be costly for small enterprise, but how it would be if Linux cluster is implemented and then standard Oracle DB is deployed on that cluster to achieve availability like ...
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1answer
55 views

How do I restart a service at every reboot?

As a result of a bug in mcollective [1], I need to restart the service immediately after each boot. What is the best way to accomplish this? [1] https://bugzilla.redhat.com/show_bug.cgi?id=906885
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30 views

Difference between Virtual Console and Workspace?

Please explain all differences between Virtual console and Workspace in Linux. If possible also kindly requested to specify definition and/or example. Many thanks.
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1answer
80 views

How to find available man chapter/section for a particular command? [duplicate]

For example: ls command have only chapter 1. while mkdir command have chapter 1 & 2. Is there any command which shows how many chapters are available for a particular command? [root@localhost /]# ...
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17 views

Difference between ntsysv and system-config-services

Please someone can guide the difference between: # ntsysv # system-config-services ntsysv - tune services should be automatically started, is it similar to chkconfig?
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3answers
44 views

Difference between service off and service stop?

Please can someone explain differences between service stop and service off: for example: # service httpd off # chkconfig httpd off
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4answers
169 views

/etc/rc.d what does rc stand for? [duplicate]

Do anybody have idea about full form of rc.d at? /etc/rc.d It contain scripts to is used to control the starting, stopping and restarting of daemons. But what exactly meaning of rc here, do ...
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78 views

Getting per user cpu and memory consumption statistics

Is there a way to get cpu and memory consumption statistics summaries per user the same way prstat -t on Solaris shows them? The prstat(1) utility in Solaris display has fields NPROC UserName SWAP ...
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94 views

Supporting PCI-E X1 network cards by CentOS(RHEL)

Help me please I want to know it becase my windows 7 cant see my PCI-working network card and I dont want to buy a motherboard and then find that CentOS does not support PCI-E X1 network card. I want ...
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2answers
97 views

Unix - Prevent files with specific name from being in a directory

I need to prevent users from accidentally copy/move files with a certain names into a specific directory. Is it possible ? I need to set something in directory /home/similar2 that will reject any ...
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1answer
881 views

Bridged adapter in Virtual Box - cannot obtain IP

I have virtual box with RHEL installed. My virtual box is running on windows 7 64 -bit. I configured bridged connection, but when I am restarting network interfaces, I receive following error: ...
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34 views

where does openshift log when “unable to create gear on node”?

I'm trying to create a new application and I get an error when using the command line (rhc app create -a firstphp -t php-5.3) and when using the console through the browser. I didn't find any useful ...
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2answers
44 views

Grep with ERE doesn't filter lines with -v option

I'm trying to use the extended regex option in grep to filter out from files, lines that have the following format of string at the beginning of the line. any-non-space-char: * I'd assumed ...
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26 views

How can I keep Red Hat Linux folders open?

I am using Red Hat Linux (2.6.18 from uname -r) on a 64-bit machine. I usually keep 2 particular folders open, so I can see and manipulate their files with GUI actions. If some period of time has ...
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3answers
569 views

Winbind group lookup painfully slow

I am running winbind on an RHEL 6 system. Everything works fine except group lookups, so many commands (including sudo) are painfully slow. I did an strace which shows that winbind looks up every ...
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28 views

How to install tomcat-native without need to install development utils

I am using tomcat on a RHEL machine. When starting tomcat, i get the following warning: INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments ...
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1answer
739 views

Does docker support CentOS/RHEL now? (after 0.7 release)

As this post (http://blog.docker.io/2013/11/docker-0-7-docker-now-runs-on-any-linux-distribution/) claims that docker now have "Standard Linux support" including RHEL, but in the documents ...
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35 views

How can I prevent my USB mouse to interfere with standby, on Linux?

I am using RHEL workstation. My USB mouse interferes with standby - if I press the sleep button, the computer tries to standby, but instantly wakes up. If I remove the USB mouse, standby works. ...
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0answers
112 views

SSH Gnome Terminal Background/Foreground Colors

How can I automatically change the background/foreground color of my terminal based on the host that I SSH into? My current setup is an Ubuntu desktop running Gnome-Terminal that SSHs into a set of ...
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92 views

Can I enable discards on a LUKS-encrypted ssd drive in RHEL6 (and do I need to)?

I have a RHEL 6.4 workstation, running on a LUKS-encrypted LV residing on a SSD. I found RedHat documentation stating that dm_crypt does not currently support TRIM passthrough, however I also found ...
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1answer
1k views

vmdk file too large but guest os is small

I'm facing a strange issue with my virtual machine. I have an rhel 6.1 guest os running on VMware workstation (9.0.2 build-1031769) hosted on Windows 7 Enterprise 64 bit. The size of the vmdk file is ...
2
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1answer
985 views

Installing openssl on RHEL 6.2

Trying to install openssl-devel on RHEL 6.2. yum install openssl-devel And i am getting this error: --> Finished Dependency Resolution Error: Package: glibc-2.12-1.47.el6.i686 (rhel62) ...
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1answer
1k views

How to use NFS mounted storage as particular user

I have a NFS storage where I want to create and modify files from my local machine. On that NFS server there is a user with a group. But when I write a file from some local application to that ...
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1answer
193 views

RHEL6 boot.log is GBs in size

I am a novice linux user and I have inherited a RHEL6 server that is acting as a syslog-ng server. My problem is the boot.log is growing leaps and bounds from what appear to be the entries for the ...
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1answer
721 views

Ping retrieves an IP from DNS, but loses all packets

I'm working with a minimal installation of RHEL 6. When I first turned this machine on, it couldn't ping anybody. It turned out that I needed to add the GATEWAY under /etc/sysconfig/networking and ...
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1answer
362 views

Use 'find' to find and delete large files of a certain type

I am trying to find and rm -rf large files in RHEL, but what I would expect from this command that would give me purely the file directories, feeding them into rm -rf, it is not removing them. My FU ...
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0answers
168 views

Need noacpi in CentOS 6.4, not in RHEL 6.4

I've been trying to fix a rather odd problem that I've seen on our new Dell R5500 (Xeon based workstations). We want to run CentOS 6.4 64 bit on them. We did a base install which worked fine, however ...
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332 views

Adding a disk to an Amazon EC2 instance

I am using Amazon EC2 instance where I have low disk space [root@ip-10-59-143-73 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/xvde1 5.7G 3.3G 2.3G 60% / none ...
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146 views

crash shell: any way to check if a command executed Successfully

I am automating a test using crash package. is there some thing like $? in bash shell, which can be used to check if previous command is executed success fully or not. eg : when command crash> ...