Which of the following is not true about Unix?

Unix - Quiz(MCQ)

UNIX was not written in â€˜Câ€™ language

Linux is also known as a version of UNIX

A user can run multiple programs at the same time; hence UNIX is called a multitasking environment

Many people can use a UNIX based computer at the same time; hence UNIX is called as a multiuser system

Correct Answer : UNIX was not written in â€˜Câ€™ language

Explanation : One of the most attractive features of UNIX is that it supports multi-user and multitasking environment which makes it so popular among its users. There are many UNIX variants available in the market. Solaris Unix, AIX, HP Unix, BSD are some of the examples. Linux is also a flavor of UNIX which is freely available. Unix was developed in 1969 by AT&T employees Ken Thompson, Dennis Ritchie, Douglas McIlroy, and Joe Ossanna at Bell Labs and was written in ‘C’.

Recently Updated in Unix Questions

Which command is used for acquiring superuser status?

super

admn

Correct Answer : su

Explanation : Any user can acquire the status of superuser by using the su command. The only condition that needs to be fulfilled here is, he/she must be aware of the root password. For example,

$ su
Password: *****        //root’s password
#pwd
/home/abd             //prompt changes ( super user mode)â€‹

Which command is used to find out the consumption of a specific directory?

mem

Correct Answer : du

Explanation : Sometimes, we may need to find out the consumption of a specific directory rather than an entire file system. For this purpose, du command is used. This command reports usage by recursive examination of the directory structure.

To run the script, we should make it executable first by using _____

chmod +r

chmod +w

chmod +x

chmod +rwx

Correct Answer : chmod +x

Explanation : Before we run the script, it is essential to make the script executable first. After that invoke the script name to run the script. For making the script executable, we have to use chmod +x script_name.