Unix/UNICS or the UNiplexed Information Computing System is a simple, multitasking, multi-user, portable, time-sharing, and popular operating system. Unix was launched in 1969 by a group of folks at AT&T. Unix was initially programmed in assembly language and was later reprogrammed in C.
Unix OS has been ported to many machine families, more than any other operating system. This article will look at some Unix interview questions to help you ace your Unix interview!
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In this article, we’ll cover:
If you’re a beginner, check out these Unix interview questions to gauge your preparation level:
Here are some Unix and Unix Troubleshooting related interview questions and answers to give you an idea of what to expect:
In terms of frequency of use, ifconfig, Ping, Traceroute, Netstat Command, Dig Command, Nslookup Command, Route, and Host Command are some Unix troubleshooting commands.
Yes. We can use “rm –r *”, where the rm command is for deleting files. The –r option erases both directories and subdirectories, including the files. The * or asterisk represents that we need to do this for all entries.
Korn Shell has a history mechanism and built-in editor that simulates vi or emacs. It also has built-in integer arithmetic and string manipulation capabilities. Lastly, it offers job control, command aliasing, and arrays.
The –x option echoes the commands post the substitution. On the other hand, the –v option echoes each command before the arguments or variables have been substituted.
The indicator sh represents Bourne shell, bash represents Bourne Again Shell, csh represents C SHell, tcsh represents enhanced C Shell, zsh represents Z SHell, and ksh represents Korn SHell
Here are some Unix shell interview questions for your Unix interview preparation:
Getting to the more technical side, see if you can answer these Unix commands interview questions:
Lastly, make sure you can answer these Unix admin interview questions before your Unix interview:
Q1. What is the full form of Unix?
The full form of the Unix (also called UNICS) operating system is the UNiplexed Information Computing System.
Q2. What is Unix in simple words?
Unix is a multi-user, time-sharing, portable, multitasking, popular operating system (OS). It was launched in 1969 by a group at AT&T. Compared to any other operating system, Unix has been ported to most machine families.
Q3. What is Unix used for?
Unix is used for workstations, internet servers, and mainframe computers. Unix is simple, portable (can be run on many different systems), can multitask, and has multi-user capabilities. It also has a hierarchical file system and an extensive library of software.
Q4. What are the types of standard files available in Unix?
There are seven standard Unix file types, as defined by POSIX: regular, symbolic link, directory, block special, character special, socket, and FIFO special. Different OS-specific implementations like Solaris doors do allow more types, though.
Q3. What is the who command in Unix?
The who command in Unix helps us show or print the number of users currently logged into a Unix computer system. The who command in Unix without the command-line parameter is mainly used to show the name of the users logged in currently.
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