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Unix
Unix is a family of operating systems primarily designed for servers, mainframes, and high-end workstations. First created in 1969, Unix systems are renowned for their security and stability.
1,127 Questions
How insert the text in vi editor?
the text is inputed in vi editor by pressing the i key, that mean get the insert permission into vi editor
What type of hardware does Unix run on?
Unix can be run on a variety of server, mainframe, and workstation devices.
How can you find orphan process on Solaris?
If processes run on nodes that have derailed so to speak or the tm.watched yk has been activated, the process is considered orphaned. The watch deamons are set to kill the orphan process on default.
How can you find out if you have the permission to send a message in UNIX?
%ls -l
if we get output -rw---- then we have permission to send message
Is sort command is a filter in unix?
The answer depends on what you consider a 'filter' program. If you consider a filter program to actually limit (or filter out) certain parts of a file then the sort program would not be considered a filter program, but more of a utility program.
If you consider a filter program to be a program that changes the output in some way but gives the same amount of lines of output that are input then you could consider the sort program a filter.
Most people would probably say that the sort utility program is not a filter, but it can be up to some interpretation.
What is the context switch in UNIX?
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.
Some of your options are as follows:
Open Solaris. It is based on Sun's Solaris Unix operating system. You can get it from http://opensolaris.org/os/
FreeBSD livecd
http://livecd.sourceforge.net/
However, if your only goal is to learn shell scripting all the Linux/Unix variants use the same shells (usually some version of bash, sh, csh, tcsh, or zsh). The bash shell is the same if ran on Linux, Unix, or even Windows.
What is the definition of execute?
Execute means to perform an action. To execute a turn is to make a turn. To execute a jump, or play, is to actually complete the activity. To execute a computer program is to actually run it on the computer.
Another common use is to mean to kill, either as capital punishment or a murder done in a similarly dispassionate manner.
What operating system was developed in 1969 at AT and Ts bell labs?
Unix was the computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs, including Ken Thompson, Dennis Ritchie, Brian Kernighan, Douglas McIlroy, and Joe Ossanna.
What is difference between Solaris volume manager and Veritas volume manager?
For one, they are programs produced by two different companies.
What is paging system implementation?
The question is not very clear - in general the implementation of paging is too complex to answer in a Wiki answer entry; I suggest you take a look at any Operating System theory book.
The 'ls' command has many switches and options, especially depending on which version of Unix or Linux you are talking about. The best way to find out is to try either:
man ls
info ls
ls --help
depending on the system.
How do you write a awk script program in unix?
That is a difficult question to answer - the question is rather vague on what you intend to do. An awk script is a file containing awk commands that operate on 1 or more data files, based on selectors and actions resulting from that selector.
It all depends on what you want to do with the data. The program itself is just a text file that can be created by any editor and then interpreted with the awk command.
Metacharacter indicates background command execution?
The ampersand (&) puts any command in the background to start execution.
Why Linux is the best operating system?
Linux is the generic name for a UNIX-like operating system that can be used on a wide range of devices from supercomputers to wristwatches. The Linux kernel is released under an open source license, so anyone can read and modify its code. It has been modified to run on a large variety of electronics. Although estimates suggest it is used on only 0.5-2% of all personal computers,[8] it has been widely adopted for use in servers and embedded systems[12][13] (such as cell phones). Linux has superseded Unix in most places[which?], and is used on the 10 most powerful supercomputers in the world[14].
The GNU project is a mass collaboration of programmers who seek to create a completely free and open operating system that was similar to Unix but with completely original code. It was started in 1983 by Richard Stallman, and is responsible for many of the parts of most Linux variants. For this reason, Linux is often called GNU/Linux. Thousands of pieces of software for virtually every operating system are licensed under the GNU General Public License. Meanwhile, the Linux kernel began as a side project of Linus Torvalds, a university student from Finland. In 1991, Torvalds began work on it, and posted information about his project on a newsgroup for computer students and programmers. He received a wave of support and volunteers who ended up creating a full-fledged kernel. Programmers from GNU took notice, and members of both projects worked to integrate the finished GNU parts into the Linux kernel in order to create a full-fledged operating system.
Which keystrokes can be used to return to privileged mode from the interface configuration mode?
ctrl-p
What platforms does HP-UX run on?
HP-UX runs on the PA-RISC and IA-64 (Itanium) architectures. Earlier versions also ran on certain m68k equipment.There is currently no version for x86 or x86-64.
