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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.
500 Questions
What is the context switch in UNIX?
Asked by Wiki User
Context switching is, as far as I know, essentially the same process in all multi-tasking operating systems.
Simplistically, in order for a multi-tasking operating system to switch tasks on and off a CPU, the operating system must be able to store and restore the state of the CPU for each process that shares that CPU. The act of storing and restoring the CPU state is referred to as context switching.
In a nutshell (an oversimplified nutshell), the states/values of the Instruction Pointer, the registers, accumulator etc. must all be saved for a given process for the OS (Operating System) to move to the next process in the queue. Once they are saved, the states/values of the next process in the queue can be loaded into those same registers etc. and that process can continue execution for 'N' number of instructions. Then this whole procedure is repeated for the next process in the queue. And so on, and so forth, ad infinitum...
Necessarily, MUCH is omitted in the above over simplification but it is hoped, none the less, that the above description provides some very general idea of what happens during a context switch.
The term context switching is a sort of catch all which may refer to and cover a number of more specific processes such as thread context switches, register context switches, task context switches etc.
This answer is necessarily over simplified as a full description of context switching is far beyond the scope deemed acceptable in this forum.
Which utility displays the PID numbers of the commands you are running?
Asked by Wiki User
You can use the PS (process status) utility to display the PID numbers of running commands.
What are the differences between the OS Red Hat and White Hat?
Asked by AnkitMaity
There are no correlation. "White hat", equivalent to "ethical hacker", are both colloquial terms for someone who is proficient in systems penetration testing, employed by a company or companies to test and audit enterprise infrastructures and provide feedback. Red Hat as a company develops RHEL (Red Hat Enterprise Linux), an enterprise-level Linux distribution.
What is the GNU license?
Asked by Corentint
The GNU Free Documentation License (GNU FDL or simply GFDL) is a copyleft license for free documentation, designed by the Free Software Foundation (FSF) for the GNU project. It is the counterpart to the GNU General Public License that gives readers the same rights to copy, redistribute and modify a work and requires all copies and derivatives to be available under the same license. Copies may also be sold commercially, but if produced in larger quantities (greater than 100) then the original document or source code must be made available to the work's recipient.
What is Linux hardening?
Asked by Wiki User
It's process of making Linux even more secure. There are many ways to do that - from tweaking network policies to installing and configuring kernel security modules.
For a desktop PC or a small home server, you don't need to worry about that since Linux is already secure enough by default.
What should you do if you do not want to wait for a command to finish before running another command?
Asked by Wiki User
Run the command in the background by using an ampersand (&) just before the Return stroke that ends the command line.
Example - $ top &
Where did pj soles get her red hat?
Asked by Wiki User
she got it in (1915) at VONELY but it closed in (1999) so it is no longer Available
How do you use Ruijie supplicant network connector in Red Hat Linux?
Asked by Wiki User
I m sorry to tell you that there is no ruijie supplicant software for Linux as far as i have tried ie for red hat enterprise 5,fedora 8,ubuntu....yes ofcourse there is one in the site but its of no use if u want link is :
http://www.ruijie.com.cn/service/Portals/0/software/qtcp/Supplicant%20For%20Linux%20V1.1.1.rar
better luck with this one
i also hope that someone could develop one for Linux and mac users like us...
How do you convert content of file from lower to upper and upper to lower by using tr command in Linux?
Asked by Wiki User
ls -l | tr 'a-z' 'A-Z'
What is the yum meanning in red hat?
Asked by Wiki User
yum means - YELLOWDOG UPDATER MODIFIER.
It is a software package manager that install, removes and update packages on RPM based system.
the advantage of using yum is - During installation of Packages, it also installs the dependent packages needed with them.
Other are :-
- Support for multiple repositories
- Simple configuration
- Dependency calculation
- Fast operation
- RPM-consistent behavior
- Package group support, including multiple-repository groups
- Simple interface
