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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
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 Linux has superseded Unix in most places[which?], and is used on the 10 most powerful supercomputers in the world[14].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.
Would the ls -a command show hidden files?
Yes, in Linux or Unix, this command will show all files including hidden files in the current directoryl. In general, hidden files are files whose name begins with a period "."
What is the command '-va' used for?
This isn't a command - it appears to be an option (switch) on a different command.
What stage of the grub boot loader typically resides on the master boot record?
Stage 1. It's a very VERY small program less than 500 bytes in size (Due to the limitations in the BIOS standard which forces MBRs to be almost unusably small by today's standards.) whose sole purpose is to load Stage 1.5 and, later, Stage 2 into memory and execute them, which will of course in turn load and run either a kernel or another bootloader.
What is the difference between symbolic link and hard link?
A hard link is an actual physical entity representing the link. i.e.--data file on a server.
A symbolic link is a pointer to a physical entity. The purpose of a symbolic link is, if the object moves, the symbolic link is coded so no matter where the object physically resides, the database can find it. It requires less administration not having to update locations in files pointing to files that have moved. Symbolic links function similar to the short-cuts in a DOS based operating system
AnswerIn Unix and Unix-like systems, a hard link is a directory entry (filename) that points to the file itself. The operating system keeps track of how many hard links point to a file, so when the last hard link to a file is removed, the file is deleted. A symbolic link is a special file that only contains a filename. The file that a symbolic link refers to may not necessarily exist at any given time.How do you justify that UNIX is better than Windows operating system?
This is not a technical question but more one of personal opinion, and therefore cannot be answered with any certainty.
Which program is meant to replace SSH?
There is no particular program meant to replace SSH. SSH is considered a modern and secure program, so there is no reason to replace it.
grep -ci a
Shell scripts are used for repeatable processes, unattended operation, anything of a repetitive nature, etc. In short, they can be very valuable for just about anything.
What type of addressing scheme does UNIX use?
Most UNIX implementations use the same type of addressing as other modern Operating Systems, which include page translation, segmentation, and virtual memory addressing.
Write a shell script to count the number of times is appears in a given text file?
You don't need a shell script to do this; use the 'grep' command with the '-c' option to count the number of occurrences of some pattern.
Differences between MS-DOS and Unix in networking?
MS-DOS was not designed for networking, and doses not come with any tools to do so by default.
What features are in Solaris that are not provided by any other operating systems?
well there my friends you all should know first of all dear sweet souls of the universe .................................................................................................................................................... peace and love!!!!!!!!!!!! .......................................ok well what you guys should know is that.......... i live in Solaris !!!!!!!!!!!!!!!!!!!!!!! solaris is near polaris which in fact is a longitude of the earth , in itself the whole universe........................... much like the sun..... solaris holds less heatness evacuated in itself, almost like a Supernova, but infact ,... Solaris is a star that lasts forever, existing for eternity, a shinning enlightenment . . that is Solaris, so there you go a quick explination of Solaris because i know no one will bother read more then a few sentences........... hmmmmmmmmm if not i can go on and on and on about Solaris because i came from there...
Improved answerHey! that's going to confuse the asker! Solaris is an operating system as well, and that was what the asker was asking. :( Solaris is a Unix variant from Sun Microsystems. It runs on their proprietary SparcStations with their SPARC processors as well as typical AMD/Intel processors.Solaris is for engineering, programming, graphics/CAD, server applications, and many more advanced computing tasks.
-- Improved Ans
These days Solaris has pretty much the same features as other operating systems. Recently it was released to other chipsets besides SPARC chips as well. Solaris is designed as a rock solid Operating System that is very scalable and stable. This, of course, is what most other vendors of Unix will also say ...
