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Red Hat Enterprise Linux
Red Hat Enterprise Linux is a popular Linux distribution used for a large number of web and application servers, as well as workstation computers.
157 Questions
Which is better ccna or red hat?
It depends on your career goals. CCNA (Cisco Certified Network Associate) is better if you want to specialize in networking, while Red Hat certifications are better if you are interested in Linux system administration. Choose the one that aligns with your career path and interests.
Apache is the world's leading and most commonly deployed web server. The majority of the web sites on the Internet run on an Apache server,
What is the dd command in Linux?
dd is supposedly an acronym for 'disk destroyer'
it basically makes a BINARY COPY of a file into another file. It is different different from the cp command, which copies files. dd copies bytes.
It is useful because in the unix world, everything is a file. For example,
dd if=/dev/zero of=/home/yourname/zerofile bs=1024 count=1024
makes a file called zerofile in your home directory which will be one megabyte long and will have nothing but zeros (empty).
Also, again using device files, you can copy the contents of one hard drive or partition onto another hard drive or partition. Just keep in mind that it is not just copying files, but making a binary copy. The following would copy your first partition onto your second partition:
dd if=/dev/sda1 of=/dev/sda2 bs=1024
and finally, this is how you can get into big trouble. The following would probably run for about two minutes and then your computer would freeze and never boot up again.
dd if=/dev/zero of=/dev/sda bs=1024
What are the advantages and disadvantages of Red Hat Enterprise Linux?
One advantage for Fedora Linux is that it is good for both home and office users. However this operating system requires a large amount of customization.
What is red hat operating system?
Red hat operating system is a Linux based operating system assembled by the company Red Hat.It was released on November 3,1994.
It was the first Linux distribution to use the RPM package manager.
since 2003 Red Hat has discontinued it in the favor of Red Hat Enterprise Linux (RHEL) for enterprise environment.Now fedora project is supported by the community and Red Hat.
Red Hat Linux 9, the final release, hit its official end-of-life on 2004-04-30, although updates were published for it through 2006 by the fedora project till it's shutdown in 2007.
Spooling refers to a process of transfering data by placing it in temporary working area where
another program may access it for processing at a later point in time. 'Spool ' can refer to the
action of a storage device that incorporates a physical spool or reel, such as tape drive.
For eg:- A printer can serve only one job at a time, several applications may wish to print their
output concurrently, without having their output mixed together. The operating system solves
this problem by intercepting all output to the printer. Each applications's output is Spooled
to a separate disk file. When an application finishes printing, the spooling system queues the
corresponding spool file for output to the printer. The spooling system copies the queued spool
files to the printer one at a time.
In some operating system, spooling is managed by a system daemon process. In other operating
systems, it is handled by an in-kennel thread.
In either case, the operating system provides a control interface that enables users and system
administrators to display the queue, to remove unwanted jobs before those jobs print to suspend
printing while the printer is serviced, and so on.
Some devices, such as tape drives and printers, cannot usefully multiplex the I/O requests of
multiple concurrent applications. Spooling is one way that operating systems can coordinate
concurrent output. Another way to deal with concurrent device access is to provide explicit
facilities for coordination.
Some operating systems (including VMS) provide support for exclusive device access, by
enabling a process to allocate an idle device, and to deallocate that device when it is no longer
needed. Other operating systems enforce a limit of one open file handle to such a device.
Many operating systems provide functions that enable processes to coordinate exclusive access
among themselves. For instance, Windows NT provides system calls to wait until a device
object becomes available. It also has a parameter to the open () system call that declares the
types of access to be permitted to other concurrent threads. On these systems, it is up to the
applications to avoid deadlock.
THE SPOOLING MECHANISM
The entire key to spooling is a synchronous processing, where the program is not constrained by
the speed of slow devices, particularly printers.
Printers are relatively slow peripherals. In comparison, disc devices and particularly CPU's
are orders of magnitude faster. Without spooling print data, the speed of program operation
is constrained by the slowest device, commonly printers, forcing the program to wait for the
mechanical motion of the printer, the program is known as "print bound'.
What is the differences between ext2 ext3 and ext4 file system in Linux?
Ext3 is a tiny bit slower than ext2 is, but it holds tremendous advantages. There is really only one difference between ext2 and ext3, and that is that ext3 uses a journal to prevent filesystem corruption in the case of an unclean shutdown (ie. before the filesystem is synced to disk). That makes ext3 a bit slower than ext2 since all metadata changes are written to the journal, and then flushed to disk, but on the other hand you don't risk having the entire filesystem destroyed at power failure or if an unwitted person turns the computer off uncleanly. You don't have to check the filesystem after an unclean shutdown either. Ext3 has three levels of journalling. Metadata (ie. internal filesystem structures) are always journalled, so that the filesystem itself is never corrupted. How ordinary data is written to the file system is controllable, though. The default option is the "ordered" mode, which causes file contents to be written to the filesystem before metadata is even committed to the journal. The highest reliable mode is called the "journal" mode, which causes file data to be committed to the journal before it is flushed to its final place, like the metadata. The least reliable mode, but rumoured to be the fastest, is called the "writeback" mode, which makes no promises at all regarding the consistency of file data. Only metadata is output reliably in writeback mode. So as for anything else, it's mainly a matter of priority. If you don't want ultimate speed, go with ext3. If you need the highest speed that is theoratically aquirable though, then go with ext2. For that to be effective you'll probably need a really advanced hard drive controller, though.
What is a shell How does it work with the kernal With the user?
any different types of technical symposium names in cse
List 5 major functions of a operating system?
*An operting system manages hardware, runs applications, provides an interface for users, and stores, retrieves, and manipulates files.
*It manages the hardware and software resources of the system.
*It provides a stable, consistent way for applications to deal with the hardware without having to know all the details of the hardware.
*System tool (programs) used to monitor computer performance,debug,problems, or maintain parts of the system.
*A set of libraries or functions which may use to perform specific tasks especially relating to interfacing with computer system components.
Conventional operating systems can range from absolutely no cost (minus that of downloading and burning to a CD) to several thousand dollars for high-end servers and supercomputers. Custom-made operating systems for satellites and industrial control systems may cost several million dollars.
Is Red Hat Enterprise Linux free?
Yes and no. The source code is available for almost all programs, and is made available in unofficial and semi-official form as CentOS and Fedora, respectively. However, RHEL, when branded as such, is only available through purchasing a support plan.
Red Hat had two versions of Linux, one for home/consumer/desktop use, and one for commercial/enterprise/server use (Red Hat Enterprise Linux).
A few years ago, Red Hat decided to focus only on RHEL. The consumer/desktop version was renamed Fedora and given to the community to support.
If you are looking for an older version of Red Hat, you can Google the specific version you are looking for and a number of mirrors will appear - but I would recommend against this, it's no longer supported or updated, and you'll probably have issues with it and newer hardware.
Who created Red Hat Enterprise Linux?
Red Hat, Inc. is a company that rebrands, supports and distributes the GNU Linux operating system, along with their own enhancements. One of their product lines is called Red Hat Enterprise Linux.
Name three printing protocols that cups supports which is the cups native protocol?
CUPS supports IPP, LPD/LPR, HTTP, SMB, and JetDirect (socket) protocols.
What is the difference between Red Hat Enterprise Linux and Kubuntu?
There is no longer a product known as "Red Hat Linux." All versions of Red Hat are made for enterprises. At one time, there was a consumer version, but it has since been discontinued, in favour of Fedora, a testing ground for technologies that Red Hat wish to incorporate into it's Enterprise Linux offering
Typically.... Bash. Could also be tcsh, zsh, or pdksh. Or something really weird. Try:
echo $SHELL and see what that gets you. Shell is a software program that allows you to interact and access a computer system. User can enter commands in the shell prompt, which will be executed by the shell. Since the only means of communication through shell is text, it is known as Command-Line-Interfaceor CLI.
A shell is a command interpreter and serves as a user interface to the Linux kernel
Name two servers that allow you to share directories between systems?
SAMBA and NFS. -A practical Guide to Fedora and Red Hat Enterprise Linux (fifth edition) pg 606
How do you install Wine in Red Hat Enterprise Linux?
Internet Explorer is a product of MIcrosoft and designed and written for Microsoft Windows. Linux can not install Windows executables. There is however a program called Wine which stands for Wine is not an emulator that can be used as a compatibility layer and allow Internet Explorer to be installed in RedHat. There is a commercially available version of Wine called CrossOver, which is a bit more streamlined and also has support. Another option would be a virtual machine such as Oracle VirtualBox which actually runs a session of Windows inside RedHat.
Hope this helps!
Kernellinux
Is red hat and mandrake an example of a windows and a Linux operating system respectively?
Both Debian and Fedora are examples of Linux
Other examples of Linux distros include:
Ubuntu
Centos
RedHat
BackTrack
...
Some examples of different windows OS's are (In order of newest to oldest):
Windows 8
Windows 7
Windows Vista
Windows XP
...
Red hat is just the distribution. The Linux project determines the current revisions and allows people to charge for distributions just in case you don't want to load everything by hand.
