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8

Yes, RHEL is based on Fedora. See this Fedora Wiki article: http://fedoraproject.org/wiki/Red_Hat_Enterprise_Linux Red Hat Enterprise Linux (or RHEL) is a commercially supported derivative of Fedora tailored to meet the requirements of enterprise customers. It is a commercial product from Red Hat which also sponsors Fedora as a community project. ...


6

My way to improve DNS performance: Run namebench to find the fastest DNS provider for you. Done. To my knowledge, there is no magic, local configuration to improve the speed of DNS queries. But I'm hardly an expert on the topic.


6

You can certainly make this switch. Basically you, more or less, point your installation to CentOS repositories and continue on your merry way. You'll have one major problem, though, in that all the CentOS repos seem to have their 5.x packages at release 5.9. There appears, at a quick glance, to be no 5.5 specific repos any longer. I did this on a web farm ...


5

It will boot and continue working normally, but will not receive any updates, which is quite dangerous. If you want/need an OS based on the RHEL source code, consider CentOS or Scientific Linux.


5

I believe the K implies that when entering run-level 3, it is shutting down sshd Yes. K is for Kill. This is old SystemV style startup. The base scripts are all in init.d, and there are various symlinks with specific naming conventions (S00..., K99...) in the rc?.d directories where they're actually run from. When you change runlevels, say from 1 to ...


5

Anyone on your system, including anyone who can exploit any server on your system, can promote any user to root. This is basically removing security.


5

It all started with Red Hat that was the base start and the first widely-available beta release of Red Hat Linux was on october 31 1994 with version number RHL 0.9. On september 25 2003 they started the Fedora project as the developer distro (you are right, also for RHL). So Red Hat became the enterprise distro where Fedora is still real open-source and top ...


4

Fedora does not correspond directly to RHEL or CentOS; RHEL is built from pieces of Fedora, but not the whole thing. The latest RHEL and CentOS versions are directly comparable, except for prerelease versions. Older versions of RHEL have a "u" to indicate the update release where CentOS has a "." to indicate the minor version. Also note that delays in ...


4

This will make things worse in every case but the case where your first nameserver itself fails. Here's an example of how it makes thing worse: Say you're trying to resolve a site whose primary nameserver is slow or broken. Normally this happens. You try your first nameserver. It tries the site's primary nameserver. The primary times out. Your first ...


4

There is nothing that says if this is the Intel compiler or the default gcc compiler. You quoted gcc version 4.1.2 Which suggests to me it is gcc not Intel aren't too clear about the path where they have installed it Try locate cc


4

chkconfig controls whether the service should start when your computer boots, while service lets you manage (start, stop, query status) the service. So: # service httpd stop (notice that the option provided is stop and not off) stops the httpd service but won't prevent httpd from starting upon reboot, while # chkconfig httpd off disables httpd so that ...


3

It's all based off of Bell Labs System V Unix which was somewhere around when init and run levels were introduced. It stands for runcom or run commands. In the question of anything Unix, consult the Jargon File. There's a deep history, canonical and recorded that came before Linux :rc file: /R·C fi:l/, n. [Unix: from runcom files on the ...


3

The Intel C++ compiler is usually installed in /opt/intel. There's a script you have to run to set up your environment to use it, usually iccvars.sh. For the most common installation options, this should work: . /opt/intel/bin/iccvars.sh intel64 icc -v


3

For RHEL / Fedora, you probably want to look at PXE booting and using kickstart to install. Using a "golden image" (i.e. doing what SysPrep does) isn't really the best way of deploying new machines on RHEL / Fedora (in my opinion). It (Kickstart) lets you distribute identical images without having to take up the space for that image - and lets you update new ...


3

You are using OpenSSH 5.3; %h was only introduced in OpenSSH 5.6: Changes since OpenSSH 5.5 ========================= * Expand %h to the hostname in ssh_config Hostname options. While this sounds useless, it is actually handy for working with unqualified hostnames: Host *.* Hostname %h Host * Hostname %h.example.org


3

In bash, 2> /dev/null would actually work, as long as you add it as part of the find command itself, i.e., before the pipe. For example, this will work: find -type f -printf "%s %p\n" 2> /dev/null | sort -nr | head -n 20 With tcsh, there's no straightforward way to do the same, but man tcsh mentions a workaround: The shell cannot presently ...


3

You can use find /tmp -type f -size +50000k -delete instead, which is clearer, simpler and more efficient.


3

Have a look into adding the EPEL repository to your RHEL build. EPEL is Fedora packages built against RHEL http://fedoraproject.org/wiki/EPEL I have not used this repo to install wine but do currently have it installed in my Scientific Linux 6 RHEL clone. If you are not familiar with install 3rd party repositories then you may want to have a peek at the ...


3

There is no relation between fedora version and RHEL, Centos version. Fedora is a community project with a release in each 6 months. But RHEL and its clone Centos are enterprise-grade distributions with long release gap. CentOS is a clone of RHEL with branding/artwork etc removed from RHEL. Since the logo, artwork etc are the property of Redhat, it is not ...


2

Just go ahead and use GParted. No real reason to muck about on the CLI when you could achieve the same thing faster with a GUI. If you're forced to use a CLI, then you should check out cfdisk. It's a little nicer program for partition editing.


2

rm -f test/a.txt Forceful is the name of the game > ls -ld z z/z drwxr-xr-x 2 joet dev 14 May 25 12:36 z/ -rw-r--r-- 1 root dev 0 May 25 12:36 z/z > rm -f z/z > ls -ld z z/z ls: cannot access z/z: No such file or directory drwxr-xr-x 2 joet dev 6 May 25 12:36 z/


2

Step 1: Make sure it works with the given examples. Step 2: Make sure your fuse code doesn't have any errors in it. Including very subtle ones that may get ignored by a simple ls on a mounted fuse directory alone.


2

More details from Oracles oerr command about the messages. oerr sp2 0667 gives: 00667, 0, "Message file %s<lang>.msb not found\n" // *Cause: The SP1, SP2, or CPY message file could not be // found. SQL*Plus cannot run. // *Action: Check the Oracle platform specific documentation to make // sure SQL*Plus is installed correctly. This ...


2

I recommend nmon (with nmon analyser). You can get much more than just CPU usage and its extremely easy to use.


2

I use QLogic cards in Linux. For this I use: cat /sys/class/fc_host/<host3>/port_name The <host> entry is different for each FC processor and host. Your FC switch will also show this value when you connect the ports.


2

The package is called "subversion", and is at version 1.6.11.


2

Have you tried making sure you have up to date information in your RPM databases? Something along the lines yum clean all && yum update might be in order at this point.


2

I had this same problem after upgrading sudo and found out from Red Hat that sudo changed its group membership resolution algorithm when going from sudo-1.7.4p5-13.el6_3.x86_64 to sudo-1.8.6p3-7.el6.x86_64. In sudo-1.7.4, group membership was resolved for all groups listed in /etc/sudoers and if the username was found in the list, it was granted sudo ...


2

This does not answer your question directly but it may be a good solution. Switch to CentOS. It is a direct clone of Red Hat. Check this link out: http://en.wikipedia.org/wiki/CentOS I've been using CentOS for many years and love it.



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