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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
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 ...
What are the difference between ms-dos and unix as a language translator?
Neither one of them is a "language translator."
A booking system is a modern day organizer to help make reservations for things such as flights, hotels, trains, cinemas and much more online.
smitty
Communications Applications and Services
TCP/IP
Minimum Configuration & Startup
Choose either en0 or en1
to find out the memory of each processes running on our unix/ Linux box type "PS -aux | more" would list u all the processes running with their respective processor id's (pid) and the memory used by the respective programs ...
if u are running out of memory what we can do is note down the pid which is taking lot of memory and if u feel the process is not so important for u
then use the command "killall"to quit or stop that particular process
I am using red-hat Linux, here u can use a top command to c the amount of memory utilized by each running processes.
You can use "top" or the native "prstat" in Solaris. In order to see how much memory is used by a process, not including that shared with other processes ( through shared libraries ), you can execute "pmap -x $pid" giving your processes PID.
Can the redirection shell metacharacter be used to redirect between a command and a another command?
Only one of the redirection operators will do this - the vertical bar or "pipe" symbol (|). It takes the standard output of one command and uses it as input to the next command in sequence.
What is a difference between a daemon and a background process?
Background processes are tied to a terminal's job control, while a daemon runs headless. When the terminal is killed or the user is logged out, the process dies. A daemon does not need the user to be logged in.
After you enter the 12 lines, go back to command mode, go to the first of the 12 lines and yank the 12 lines into a buffer.
Go to the end of file (or wherever you want them placed) and use the 'put' operation to insert them. I do this all the time; very common operation.
