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	Linux Interview Questions & Answers Below we have listed all the Linux Interview Questions and answers. Feel free to comment on any Linux Interview Questions or answer by the comment feature available on the page. To buy an eBook containing 30,000 Interview Questions, with Answers, Click Here. View All Linux Interview Questions & Answers - Exam Mode / Learning Mode
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Linux is, in simplest terms, an operating system. It is the software on a computer that enables applications and the computer operator to access the devices on the computer to perform desired functions. The operating system (OS) relays instructions from an application to, for instance, the computer's processor. Linux (often pronounced LIH-nuhks with a short "i") is a Unix-like operating system that was designed to provide personal computer users a free or very low-cost operating system comparable to traditional and usually more expensive Unix systems.

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Question	Rating	View Answer
The beginning user identifier is defined in the _________ file.		View Answer
You have two files in two different directories with the same inode. What type of link is involved?		View Answer
What daemon is responsible for tracking events on your system?		View Answer
You need to create a new group called sales with Bob, Mary and Joe as members. Which of the following would accomplish this? Choose one: a. Add the following line to the /etc/group file: sales:44:bob,mary,joe b. Issue the command groupadd sales. c. Issue the command groupadd -a sales bob,mary,joe d. Add the following line to the /etc/group file: sales::44:bob,mary,joe		View Answer
Your default umask is 002. What does this mean? Choose one: a. Any file you create will have the permissions set as owner and group having read and write permissions; others as read only. b. Any file you create will have the permissions set as owner and group having read, write and execute permissions; others as read and execute. c. Any directoy you create will have the permissions set as owner and group having read, write and execute permissions; others as read and write permissions. d. Any directory you create will have the permissions set as owner and group having read and write permissions; others as read only.		View Answer
When using sed to replace one term with another it will print every line in the file and then print each line every time it does a replacement. What option should you add to the command line to only print the lines that are changed? Choose one: a. -n b. -p c. -g d. -f		View Answer
You want to know how much space is being occupied by your user's home directories. Which of the following will provide you with this information? Choose one: a. du -l /home b. du -b /home c. du -m /home d. du -c /home		View Answer
When using useradd to create a new user account, which of the following tasks is not done automatically.		View Answer
You wish to print the file vacations with 60 lines to a page. Which of the following commands will accomplish this? Choose one: a. pr -l60 vacations \| lpr b. pr -f vacations \| lpr c. pr -m vacations \| lpr d. pr -l vacations \| lpr		View Answer
What does the apropos command do? Choose one: a. It is the same as the man -f command. b. It is the same as the man -K command. c. It searches the short descriptions from the man pages. d. It uses the locatedb database to answer your query.		View Answer
What command would you type to use the cpio to create a backup called backup.cpio of all the users' home directories?		View Answer
You have to type your name and title frequently throughout the day and would like to decrease the number of key strokes you use to type this. Which one of your configuration files would you edit to bind this information to one of the function keys?		View Answer
What command should you use to check your filesystem?		View Answer
If you type the command cat dog &> cat what would you see on your display? Choose one: a. Any error messages only. b. The contents of the file dog. c. The contents of the file dog and any error messages. d. Nothing as all output is saved to the file cat.		View Answer
Which daemon must be running in order to have any scheduled jobs run as scheduled? Choose one: a. crond b. atd c. atrun d. crontab		View Answer
Each entry in the /etc/inittab file contains four fields the third of which is the Action field. What is the purpose of this field? Choose one: a. Identifies the entry b. Specifies the command to execute c. Defines how to handle the entry. d. Defines which runlevels this line applies to.		View Answer
You are running out of space in your home directory. While looking for files to delete or compress you find a large file called .bash_history and delete it. A few days later, it is back and as large as before. What do you need to do to ensure that its size is smaller? Choose one a. Set the HISTFILESIZE variable to a smaller number. b. Set the HISTSIZE to a smaller number. c. Set the NOHISTFILE variable to true. d. Set the HISTAPPEND variable to true.		View Answer
You are going to reboot your system but want to warn your users to log off. Which of the following commands will send a message to the users. Choose one: a. init b. halt c. reboot d. shutdown		View Answer
Explain about debugging?		View Answer
You have a file called phonenos that is almost 4,000 lines long. What text filter can you use to split it into four pieces each 1,000 lines long?		View Answer