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

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4
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2answers
433 views

'man' page is too narrow (not taking advantage of terminal size)

I'm making my first 'man' page and I'm using groff to do it. However, when I "compile" it and view it, it only takes up a certain amount of columns in my terminal. I've tried viewing other man pages ...
1
vote
1answer
1k views

RHEL Time Changes Automatically

I Have a RHEL 6.1 server and it's date/time changes automatically even after I change the time settings. Could someone point out how to fix this issue? Note** I suspect this happens when rhn ...
5
votes
3answers
3k views

Change /dev/sd* for USB Linux install?

I am trying to install Scientific Linux 6.1 (which is literally RedHat Enterprise Linux without the branding) by booting its installer from my USB drive. The installer starts fine, but two things ...
5
votes
1answer
3k views

Is there any difference between e2fsck and e4fsck on CentOS / RHEL systems?

ext4.wiki.kernel.org makes it sound like e2fsck was simply renamed to e4fsck so that e4fsprogs and e2fsprogs could coexist without overlapping. However, there is no mention of any difference in the ...
2
votes
3answers
2k views

Linux + how to verify mirror configuration on linux red-hat

I have an IBM blade server and we've installed RedHat Linux on the machine. How can we check if we have both disks running as a mirror, or if everything is only running on a single disk? What ...
1
vote
2answers
662 views

Are there programs that work for Red Hat but not Ubuntu?

And vice versa? What about other distributions too?
0
votes
4answers
1k views

Package repository for which Fedora version would be best match for RHEL / CentOS / Scientific Linux 6.0?

I am using Scientific Linux 6.0, which is based on RHEL (RedHat) 6.0. I want to install some package (LXDE), which is present in repositories for Fedora, but which I didn't found either in Scientific ...
5
votes
4answers
1k views

Selinux is denying access to mysqld

I have a script that dumps a mysql database. It then compresses the file and this gets stored in my home folder by using cron. The problem is I seem to be getting an error message. mysqldump: ...
1
vote
2answers
2k views

Check the Existence of a Network Interface Card Redhat

I'm aware that I can use ethtool eth0|eth1|eth2 to check the existence of a NIC. But I wonder where the files are on the machine that contain information of an existing interface, as I need to use ...
1
vote
2answers
2k views

How to hibernate a RHEL6 machine?

I am using RHEL6 and I don't see a hibernate option for it. Doesn't RHEL6 have a hibernate option? I tried pm-hibernate from command line but it said: PM: Cannot find swap device, try swapon -a ...
5
votes
1answer
2k views

Changing Redhat Network Settings From DHCP to STATIC IP Via Configuration Files

In order to make the statically assigned IP work, I have already modified the file /etc/sysconfig/network-scripts/ifcfg-eth0 as follows: DEVICE=eth0 IPADDR=10.33.17.143 NETMASK=255.255.255.0 ...
0
votes
3answers
19k views

How to read NTFS drives in Linux (RHEL 6)?

My system is on dual boot. I have installed both RHEL 6 and win7 in it. I use RHEL mostly and I want to use my windows' NTFS drive in RHEL. How can I do it? Tell me the procedure.
6
votes
1answer
2k views

Why does redirection (>) not work sometimes but appending (>>) does?

While studying for the RHCE, I came across a situation where stdin redirection does not work in bash: # file /tmp/users.txt /tmp/users.txt: cannot open `/tmp/users.txt' (No such file or directory) ...
6
votes
3answers
1k views

What roles do DAC (file permissions), ACL and MAC (SELinux) play in Linux file security?

I need some clarification/confirmation/elaboration on the different roles DAC, ACL and MAC play in Linux file security. After some research from the documentation, this is my understanding of the ...
1
vote
1answer
1k views

Redhat Network Service Restart

I modified the /etc/sysconfig/network-scripts/ifcfg-eth0 file to set a static ip for my redhat. Then I tried to use command "service network restart" to make the change stick, however, it became stuck ...
3
votes
2answers
17k views

How do I get UUENCODE to work?

I have a server that I have inherited that has an older version of Redhat installed due to software requirements and now there is a need to use UUENCODE to allow email attachments. The uuencode and ...
2
votes
1answer
61 views

RedHat Enterprise Edition Kernel Support

Is there support for Kernel versions 2.4-2.6 in RedHat Enterprise Linux versions 4 and 5?
-3
votes
1answer
140 views

Linux configuration settings

Where are the following configuration files located (e.g., Redhat)? network settings (static/DHCP/DNS) timezone proxy for network default language
1
vote
1answer
7k views

doing OpenLDAP config changes in RHEL 6

I've been configuring OpenLDAP on RHEL 6 and its seems you have run the following to rebuild the config dirs. I'm ok with that, but my issues is, say I want to change the server passwd, do I have to ...
0
votes
1answer
639 views

Centos/RHEL 5.5/5.6 supported SCSI adapters

We have a batch of SuperMicro 6014H-82 servers that have Adaptec 2015S SCSI controllers fitted. Unfortunately, according to the bug tracker (0002087: CentOS installer won't detect harddrives) it looks ...
2
votes
3answers
238 views

Trying to remove password echo in Redhat 5 when logging in

I'm running Redhat 5.6 with the gnome display manager. I would like to configure the login manager so that there is no echo of the password when typing it in (no asterisks or the like). I have ...
1
vote
1answer
955 views

Red Hat Kernel Upgrade problem

I'm using a Red Hat 4 Enterprise Linux. But, when I upgrade the kernel, an error occurred. And after, when computer is booting with new kernel (red hat enterprıse 2.6.9-100.el), I receive the ...
1
vote
1answer
269 views

What are the Implications of moving to Huge mem kernel on RHEL4

I've been asked to investigate adding extra memory (> 16gb) to a RHEL 4 server and moving to a huge mem kernel. The server is used for Oracle RAC. Is it just a case of installing the hugh mem kernel ...
1
vote
3answers
3k views

Listing packages in Yum that depend on another installed package

I am trying to install a 3rd-party RPM package on RHEL5 which depends on version 3.4 of sqlite. According to Yum I already have 3.3.6 installed. Is there a way to list the installed packages that ...
1
vote
0answers
379 views

W2K3 DC: Samba file sharing access permission problem

I want to access SAMBA shares from a Windows Server 2003 domain controller without a password. But, I am receiving a permission error each time. I'm using RedHat 5.5. # ls -l total 96 -rw------- 1 ...
1
vote
1answer
2k views

Red Hat and Windows 7 dual boot system

I am looking for the best way to create a dual boot on my Red Hat system. This is a Red Hat 5.3 System for scientific use, and we need to run some Windows software on it for visualization purposes. ...
3
votes
2answers
200 views

Which RedHat packages for CentOS?

I want to use a RedHat rpm Software Package for CentOS 5.6, but I dont know which version of RedHat works with CentOS 5.6. RedHat 4 = CentOS 4? RedHat 5 = CentOS 5? ...
3
votes
2answers
942 views

System hangs on shutdown/restart - is ssh involved?

If I ssh into my server and do 'shutdown -r now', the shutdown hangs on the message 'Sending processes the KILL signal', and I have to walk into the lab and use the power button to force a shutdown. ...
0
votes
2answers
639 views

Create url link in menu

How can I create a menu item that points to a URL? I've tried creating a mylink.desktop entry like this: [Desktop Entry] Encoding=UTF-8 Name=My Link Name Icon=my-icon Type=Link Categories=Office; ...
8
votes
2answers
389 views

Launching a GUI application in RHEL 5 hangs

When I try to launch any GUI application through a terminal in my RHEL 5.4, it takes a very long time for the GUI to come up. Also, sometimes it just hangs. I see the following messages in the ...
3
votes
2answers
4k views

ldap_bind: Invalid credentials (49)

I'm trying to set up an openLdap server and after following the instructions I'm stuck at the point where I can't add any data. The error I'm getting is ldap_bind: Invalid credentials (49) Please ...
3
votes
2answers
512 views

Why does US International Keyboard break Alt_R

All adding the U.S. English International (with dead keys) keyboard layout breaks my Alt_R key. Any ideas why? I'm working on RHEL 5.5 using GNOME. The problem disappears if I remove the additional ...
4
votes
4answers
210 views

Where might the dbus development (.h) files be for RHEL5?

A quick search from yum for dbus fails to turn up the devel related package that should provide dbus.h et al. Anybody have experience locating the relevant package? Should I just resort to getting ...
2
votes
3answers
2k views

Centos or Scientific Linux

When I need to create a new server I've always chosen Centos mainly for it's compatibility with Red Hat which i consider the standard de-facto for the general purpose linux server. Now the problem is ...
2
votes
2answers
424 views

Where to apply xmodmap for systemwide usage?

I need to apply a custom xmodmap for all users at the start. Where do I need to put it? I have thought at /etc/rc.local? Does this make sense?
13
votes
3answers
18k views

How can I increase open files limit for all processes?

I can use ulimit but I think that only affects my shell session. I want the limit increased for all processes. This is on Red Hat.
10
votes
4answers
6k views

How can I avoid “Run fsck manually” messages while allowing experimenting with system time changes?

I'm working with a system where we want to allow users to play around with the date and time if they want, and where reboots may happen arbitrarily. This is fine, except for one thing: if there's a ...
2
votes
2answers
986 views

dhclient exits with status 0 but still no address

I've been trying to find out with the man page and some other sources if the exit status doesn't necessarily mean you achieved an address but I'm thinking I maybe didn't read it correctly. Does anyone ...
3
votes
0answers
229 views

How do I set up dual quadro cards in RHEL 5.5

have a RHEL 5 workstation with 2 nvidia Quadro FX4500 cards, with one display attached to each card. After doing a clean install of RHEL 5.5, the second display doesnt work (it worked ok in RHEL 5.2). ...
2
votes
1answer
6k views

Startup log file for RHEL?

When I start up my Red Hat box I see a progress meter in the center of the screen that has a button that says "Show Details...". When I click on this button, I see a console like screen that shows ...
17
votes
4answers
2k views

What makes CentOS “enterprisey” compared to “generic” distributions like Ubuntu?

What makes CentOS "enterprisey" compared to "generic" distributions like Ubuntu? When I say "enterprisey" I actually mean "better for server deployments". Just a general question, because I was ...
1
vote
1answer
465 views

Add files to an iso image and auto run a script post installation

I'd like to add a tar archive in the standard Red Hat installation CD image and untar the same at a desired location using some post install scripts. Can you kindly suggest me how to proceed? In ...
4
votes
2answers
6k views

How to search for official RHEL packages

I'd like to know how to do this via the web, something similar to Debian's official package search page.
4
votes
2answers
2k views

SPEC %files attribute and Shell variables

I have a spec file which unpacks a library which is deployed at location which is exported in the shell. ie %file ${AXIS2_C}/bin/services/services.xml This fails with : error: File not found: ...
7
votes
2answers
2k views

Once sudo su'd to root, is there a command to see my username?

I have sudo rights on a redhat box; once I've "sudo su -" to become root in a shell, are there any commands I can run to see what username I su'd FROM?
1
vote
1answer
210 views

Unable to find Red Hat Server

Running into a strange problem. I have a local server running Red Hat on a virtual machine (accessed through putty). I'm using this server to work on a website in Django, which I run with: python ...
1
vote
2answers
760 views

using cron to run script

Hey guys, im trying to run a script using cron, im using a crontab created by the user ashtanga, in the crontab i have */5 * * * * /home/custom-django-projects/SiteMonitor/sender.py in top of the ...
3
votes
1answer
5k views

Mount samba filesystem into RHEL 5.5

I have a trial RHEL version for a proof of concept where I was asked to mount a windows filesystem into linux. I tried mount -t smbfs -o username=samba,password=samba //Desktop/Public /mnt/public ...
5
votes
2answers
2k views

How can I serve a Kickstart file over the network without a DHCP server?

I want to install CentOS 5.5 on two systems. I have a kickstart file. I would like to install CentOS on a system using this kickstart file. I'm reading the instructions provided by fedoraproject.org ...
5
votes
2answers
539 views

How to get started with CentOS?

I've been working with Debian GNU/Linux for a long time and am very proficient with it. However for a new project I've got to got familiar with CentOS ASAP. So my Question is: How do I get started ...