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What is kernel in UNIX operating system?
kernel is everything in unix os
Does Linux use the kernel of Unix?
No, it is unix-based but Linux is a kernel not an operating system.Ubuntu,Linux Mint,Debian,and puppy Linux,ect. are OS's that use the Linux kernel.
Which kernel platform can be used to run a Macintosh OS X system?
Mac OS X is built on the XNU (X is Not Unix) kernel which is a hybrid combining elements of the Mach kernel and FreeBSD.
The Mac OS X Server kernel is derived from an operating system called what?
Unix
Why Mac OS 10.3.9 have exec functions of Unix-like operating systems?
The reason for the exec functions being same/similar is because the Mac OS has its roots in variants of the Unix kernel.
The first major program written in C was the what opserating system?
Unix kernel
How unix came into existence?
"Linux" as a operating system distribution (which includes the kernel as created by Linus Torvalds), was in some way influenced by Unix (this includes Apple's Mac OS and OS X, which was based on BSD, which was derived from Unix) at some point in their development.
Can you run a c or c program without an OS if yes how if no then where is unix or Linux code running?
Yes and No. Unix and Linux Kernel code is written such that it is not dependent on external libraries. Thus, it can run without an OS - it is, in effect, the OS. The same goes for any OS Kernel. It has enough code to load device drivers and execute some form of initialization program. The Linux kernel is executed by a bootloader, which is generally written in assembly or very low-level c, and must be told the location of the kernel, or the location of a 2nd-stage bootloader which is smart enough to "find" the kernel. An example of the former type is LILO, an example of the latter type is GRUB. Beyond this, higher-level C programs must execute within the scope of a running kernel, which provides such functions as I/O access, Network access, etc. If you "kill" the kernel, then no applications are able to continue running, although kernels do have debug modes, which are mini-kernels that provide enough functionality to trace back the cause of a problem.
Where the kernel reside in computer and what is it?
The kernel resides in your OS of the computer. the kernel has one main function that is to act as translator from applications to your CPU, Memory, and various other devices. In the world of Microsoft it's a go between for applications and the device drivers. In Linux, Mac OS, and, any other Unix based OS the kernel directly talks to the hardware with out the need for device drivers. For more info see the related link
What is unix kornal?
The Unix Kernel is the base level part of the Operating System that is usually memory resident and is not swapped out. It contains the primary portions of the OS to allow other processes to execute, be managed, etc.
What is the architecture of Unix?
- The functioning of UNIX operating system is handled in three levels. At the heart of UNIX is the kernel, which interact with actual hardware. Kernel is the fundamental part(core) of the OS. That resides in main memory at all times. On the outer crust are the application packages and user programs. The dilled layer is the shell which acts as a mediator that translates the commands given by the application programs in the outer later and conveys them to the kernel layer. The kernel then executes these commands using the inner hardware.
Explain different layers of UNIX operating system Also explain interaction between shell and kernel using any suitable command?
Layers of UNIX Operation System along with an example to illustrate the interaction between shell and Kernel.The UNIX operating system is made up of three parts: the kernel, the shell and the programs.The kernelThe kernel of UNIX is the hub of the operating system: it allocates time and memory to programs and handles the filestore and communications in response to system calls.The shellThe shell acts as an interface between the user and the kernel. The shell is a command line interpreter (CLI). It interprets the commands the user types in and arranges for them to be carried out. The commands are themselves programs: when they terminate, the shell gives the user another prompt ($ on our systems).The programsA program is refereed to as a process while the kernel is running it. The Kernel can run the same shell program(or any other program) simultaneously for many users on a Unix System, and each running copy of the program is a separate process. The Shell is also a program that the UNIX Kernel runs for the user.As an illustration of the way that the shell and the kernel work together, suppose a user types rm myfile(which has the effect of removing the file myfile). The shell searches the filestore for the file containing the program rm, and then requests the kernel, through system calls, to execute the program rm on myfile. When the process rm myfile has finished running, the shell then returns the UNIX prompt $ to the user, indicating that it is waiting for further commands.- Submitted by SRKStudent of NIITContact No. : +91-9534330837Email: shoaibrazakhan@gmail.com
