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

learn more… | top users | synonyms (1)

14
votes
2answers
17k views

( /etc/sysconfig/iptables ) “Manual customization of this file is not recommended.” Why?

Editing this file directly /etc/sysconfig/iptables can save me so much headaches so much time and so on... and yet on the very top of the file it says.. Manual customization of this file is not ...
3
votes
1answer
44 views

Switching users without the - symbol

I had to switch to a different user earlier for something that I was working on. I have originally done: su support While I was successfully able to switch to support, I found I was unable to make ...
1
vote
1answer
272 views

Built new kernel, LVM won't mount from initrd

I need to upgrade my kernel on a RHEL 5 system to build with some experimental drivers. I have configured the kernel with module loading for LVM (dm_* modules). Once the initrd runs the /init ...
1
vote
1answer
78 views

Find package that uses a specific shell command

I believe I have installed multiple packages that use the same shell command to run. I know one of them, but I only vaguely recall installing the other and thus cannot uninstall it. I believe they're ...
1
vote
0answers
574 views

External VGA monitor port not working on HP Elitebook 2540p running RHEL 6.5

I'm running RHEL 6.5 on an HP EliteBook 2540p. When I connect the external VGA port to a projector or external monitor and press Fn+F3 to switch to the external port, nothing happens. Under System ->...
2
votes
3answers
143 views

listing package dependents

I stupidly did "yum remove python" which also ended up removing all the packages that required python as well. Luckily, I have access to another Linux machine that is a near clone of this machine, ...
3
votes
1answer
2k views

How do I resolve an error when booting, “Couldn't find device with UUID…”

I have a RHEL 6 system, running on a VMWare machine. The admin of the VM server added a second RAID volume to the server, which my RHEL system does not use. Now, when I boot the RHEL system, I get a ...
4
votes
1answer
4k views

Maximum memory usable by a 32 bit RHEL 6 system

I have installed a 32 bit RHEL OS on a 64 bit system. From the wiki page of PAE: The Linux kernel includes full PAE mode support starting with version 2.3.23, with Linus Torvalds mentioning PAE'...
0
votes
0answers
295 views

zip command is failing during high memory usage

We have several perl scripts, which generates and emails reports. The script that emails the files expects a .zip extension. The report scripts generates a .txt or .xls file and then runs the ...
1
vote
0answers
389 views

Installation from USB fails

I have a pretty old Ubuntu 8.04 machine. The machine doesn't have a DVD reader/writer in it. Challenge: Now, the challenge I am facing is to install RHEL6 in this machine. Obstacle 1: I needed to ...
0
votes
1answer
481 views

vdsm service won't start

I am currently evaluating Red Hat Enterprise Virtualization and have managed to set up the management server and the bare metal hypervisor. Now I'm trying to add a regular box running RHEL server 6.5 ...
4
votes
3answers
4k views

RHEL6 Can't make my script run on shutdown and reboot

I'm trying to execute a script in each shutdown and reboot but the script never runs. I created the script baseRhel64 and save it to /etc/rc.d/init.d I did chkconfig --add baseRhel64 I included in ...
1
vote
2answers
4k views

Install rcp on RHEL

I have a Linux Red Hat machine version 6.4 (64-bit). I notice that the rcp command does not exist on my machine (no rcp binary). I also searched in Google in order to find an rcp binary that will fit ...
2
votes
1answer
3k views

RHEL 7.0 can't connect to internet

I'm setting up a new RHEL 7.0 installation (we're running the trial), but I can't get it to connect to the internet from command line. I'm trying to add these repos, as I currently have 0 installed, ...
1
vote
1answer
288 views

SSH slow after configuring TCP Wrappers

We have SSH open on one of our production servers leaving it prone to various brute force attacks to break in. I reduced the attempts by changing the default port from 22. I want to further harden ...
0
votes
0answers
5k views

RHEL server Booting problem: "fsck.ext3: unable to resolve 'LABEL=/u01'

We had an old Linux server in the workplace for last few years, so I decided to turn it on and it's showing this problem during boot up: No devices found Setting up Logical Volume Management. ...
0
votes
0answers
72 views

Mirror mode openldap perfromance is slow when either mirrored node fails

I'm managing two openldap servers in mirrored mode. When either server fails ldap performs poorly, 30 seconds to several minutes to authenticate. Affected services include ssh and X11 (XDMCP). A ...
1
vote
2answers
4k views

Can't installing RPM package intltool?

I want to install on my Linux Red Hat machine (6.3 64 bit) the rpm - intltool-0.41.0-1.1.el6.src.rpm. For some unclear reason I get this: /var/tmp]# rpm -i intltool-0.41.0-1.1.el6.src.rpm warning:...
1
vote
4answers
137 views

Detecting RHEL/RPM based distros

I'm trying to write a script to detect if it's being run on RHEL/RPM based distros. I've faced some odd systems configured such that both dpkg and rpm are installed, so doing a which rpm isn't a ...
1
vote
1answer
25 views

Taking the Linux Install CD out during Installation?

I'm installing rhel and need to install a driver during installation. The plan is to 'linux dd' at the boot promt and install then. However, I just wanted to know if there would be an issue with ...
1
vote
0answers
4k views

Error: iptables: No chain/target/match by that name

I am trying to configure proxy server on RHEL Server 6.5 using Squid and iptables. Below is the command I executed and the error message it displayed: vzlptest01 root [root] > iptables -A INPUT -i ...
2
votes
1answer
2k views

Trouble installing lxml with custom install location for libxml2/libxslt

I am attempting to install a python module called lxml to my account on a supercomputer running RHEL. I do NOT have root access or super user status. lxml requires the dev/devel versions of libxml2 ...
3
votes
0answers
2k views

tar: /dev/st0: Cannot write: Input/output error

When we attempt to use tar to write data to an LTO-5 tape, we get the following error. The device starts to write, and then fails. See the tar command and output, followed by the dmesg output. I ...
2
votes
2answers
73 views

Is it possible to obtain OS X versions of Unix tools on modern Linux distributions (like Ubuntu or RedHat)?

I have observed that there are often subtle and often annoying differences between the default versions of certain command line tools like paste and sed on modern distributions of Linux versus OSX. ...
3
votes
1answer
890 views

sudo environment: “g++: command not found”

I have a relatively fresh RHEL 6.5 install, on to which I have installed from source GCCC 4.9. After I installed GCC 4.9, I uninstalled the distro-provided older GCC version via: sudo yum remove gcc ...
1
vote
1answer
133 views

What is the foolproof/proper way to set hostname and domain on CentOS

I've seen a few ways of changing hostnames of domain names. One way is to issue the hostname command followed by the name such as: hostname localhost.localdomain /etc/sysconfig/network also has a ...
4
votes
1answer
3k views

STIG (Security Technical Implementation Guides) automation

Has anyone here found the best way to STIG a version of RHEL 6.x automatically? The other answers I have found are either out of date or do not completely STIG the machine. Even an image that has a ...
1
vote
1answer
526 views

Installing RHEL6.5 by swapping RPMs

BACKGROUND So I've been tasked with updating a system from RHEL6.0 to RHEL6.5 via a bootable USB. Due to size limitation, I've stripped (using the rpm -e command to prevent dependency errors) ...
2
votes
1answer
60 views

Red Hat internal specifications

I'm doing a homework assignment for my college, and I'm trying to find the parameters used in kernel compilation on RedHat. My teacher asks: "Analyse and describes in terms of models of each version ...
1
vote
1answer
445 views

Permissions changing on few files under /etc/

It appears that new permissions on /etc/issue and /etc/motd are reverting back to the original even if we change them. This is on systems running RHEL 5 and RHEL 6. Is there any rc script which ...
4
votes
2answers
186 views

NFS: share with all clients except one

I want to share a folder with all the network's clients except only one. This is my current /etc/exports file: /opt/resources *(rw,async) What should I add to prevent the client 192.168.1.24 ...
3
votes
1answer
55 views

How to configure my enviorment in such a way that a proper (different from the system one) version of library is used

I guess that this question is a borderline between ServerFault and StackOverflow and this site. But I think that U&L is most relevant. I have some C++ code that depends on a library in version X ...
3
votes
1answer
6k views

[RESOLVED]Various programs not working after yum install some packages [closed]

[RESOLVED] I found out that the Memory chip caused the problems. I changed it and the system works fine now! I'm using RHEL6.0 and encountered the problem that gdb, yum, rpm don't work any more. ...
1
vote
1answer
150 views

Kickstart file not being found in VituralBox

I am installing a STIG RHEL on a virtual box and therefore have a custom kick start file in the iso I am using. The iso structure looks like this for the kickstart file ROOT | |----stig_fix |...
3
votes
0answers
2k views

mailx attachment behaviour between RHL 5 and RHL 6

We have a line of code that does this in ksh, to send a file as an attachment in email: uuencode <filename> <filename.txt> | mailx someone@somewhere.com In RHL 5.2 mailx sends "...
1
vote
1answer
222 views

backup user accounts without giving a home directory to them

I am reinstalling the older Ubuntu machines with the latest RHEL 6.0 in servers. I have /etc/passwd and /etc/group and /etc/shadow file backed up for the list of user accounts that I need to create ...
0
votes
1answer
164 views

gnome-session error on rhel (canberra-gtk-module error)

When starting cppeclipse in gnome-session via vnc it appears following error on rh6 canberra-gtk-module not found, module is present in /usr/lib/x64/ also fails when LD_LIBRARY_PATH=/usr/lib/x64/ is ...
0
votes
1answer
596 views

Creating yum .repo file from a remote repo using rpm

This command (from the install page for Varnish 3.x): rpm --nosignature -i http://repo.varnish-cache.org/redhat/varnish-3.0/el6/noarch/varnish-release/varnish-release-3.0-1.el6.noarch.rpm appears ...
0
votes
3answers
189 views

find * looks for a file named “*” on Debian but not on RHEL

Where is the difference? Do these distributions handle something differently? Or does the configuration vary? What do I have to compare and adjust? I would prefer find * not to match the wildcard ...
1
vote
1answer
180 views

Globbing with * in Bash - Debian vs RHEL [closed]

Where is the difference? Do these distributions handle globbing differently? Platforms: Debian Wheezy 7, Red Hat Enterprise Linux 7. Bash is always used. In my example, cat prints every file in /etc ...
2
votes
0answers
537 views

Java plugin not working with FireFox 24.3.0 on Red Hat Enterprise Linux 5.10

In the about:plugin tab, there is not Java plugin. I have created the symbolic link as suggested. The output of the 'ls -al' command is: lrwxrwxrwx 1 shehab shehab 58 Jun 4 11:21 libnpjp2.so -> ...
-3
votes
2answers
4k views

How should I download Red Hat Enterprise Linux? [closed]

I am aware that Red Hat Enterprise Linux (RHEL) is not free, that is, Red Hat charges money for the support it gives for RHEL, and I am also aware of the Fedora project of Red Hat. But I want to ...
0
votes
1answer
242 views

Building rtmpdump on RHEL x86 without yum and no root rights

I have an ssh connection to a RHEL x86 machine, and I can't use yum and I don't have root rights. Is there a way to still install rtmpdump? By looking at this tutorial, it seems that installing ...
1
vote
1answer
3k views

RHEL5/6/7 : If NM_CONTROLLED is not set what is the default value?

If /etc/sysconfig/network-scripts/eth0 does not include any NM_CONTROLLED setting on a RHEL-based distribution, what's the default behaviour? Is there any difference in the default setting between ...
5
votes
3answers
2k views

Command similar to netstat -np but grouped by state and PID?

Is there a command similar to netstat -np but grouped by state and PID? I'd like to know the current count of server connections in a particular state grouped by Programs. similar to, 102 squid ...
0
votes
2answers
3k views

IPtables reset on reboot, how do I tell what is causing this

Using RHEL, and I have had some "Cyber Security" people work on my server. I'm now using this server in a completely closed environment with no outward network connection, and would like my iptables ...
-1
votes
1answer
595 views

routing based on source IP [closed]

Is it possible to configure routing based on source ip? For example, if I have source IP 10.0.0.0, then all the traffic will go via the specific interface or would be sent to specific default gateway. ...
1
vote
1answer
228 views

php-mysql not working

I'm running on RHEL6. I have installed php and php-mysql. <?php phpinfo(); ?> is working perfectly. But I can't connect to MySQL is there a way to confirm that php-mysql is not working on my ...
1
vote
0answers
877 views

How do I set my samba share to allow guest users to view all folders and sub folders, including new and old

I currently have a samba share set up on RHEL, that allows any user to write to the root folder. I'm unable to write to the sub folders/files. I have run: chcon -R -t samba_share_t /path/to/samba/...
2
votes
1answer
3k views

Why am I getting an error: “Failed to open '/dev/st0'” when extracting an archive with bsdtar?

I installed bsdtar from source (from the libarchive website) because I could not find an rpm nor a package in yum. I'm able to see bsdtar's help message. For example: $ bsdtar --help First option ...