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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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The top utility can be used to change the priority of a running process? Another utility that can also be used to change priority is ___________?		View Answer
You have three files in the /home/ben/memos directory called letters, tom, betty. How could you determine each file's type by issuing only one command?		View Answer
Which first-level segment of the file system contains a majority of system and server configuration files within its subdirectories? A) /var B) /etc C) /bin D) /sbin E) /lib		View Answer
You have a file called docs.Z but do not know what it is. What is the easiest way to look at the contents of the file? Choose one: a. Use zcat to display its contents. b. Use uncompress to expand the file and then use emacs to display the files contents. c. Copy the file to a floppy disk and uncompress it under Windows. d. Use tar -xt to display the file's contents.		View Answer
What do you type to stop a hung process that resists the standard attempts to shut it down? [Choose all correct answers] A) kill PID B) quit C) kill -9 PID D) exit E) Ctrl+C		View Answer
Which of the following tasks is not controlled by one of the rc startup scripts? Choose one: a. backup users' directories b. run fsck c. mount filesystems d. load modules		View Answer
Which shell do you assign to a POP3 mail-only account? A) /bin/false B) /bin/sh C) /bin/bash D) /bin/pop E) /bin/pop3		View Answer
You suspect that you have two commands with the same name as the command is not producing the expected results. What command can you use to determine the location of the command being run?		View Answer
Which file do you edit to set partitions to mount at boot time? A) /etc/fstab B) /etc/services C) /etc/smb.conf D) /etc/fstab.conf E) /etc/mount.conf		View Answer
You want to ensure that your system is not overloaded with users running multiple scheduled jobs. A policy has been established that only the system administrators can create any scheduled jobs. It is your job to implement this policy. How are you going to do this? Choose one: a. create an empty file called /etc/cron.deny b. create a file called /etc/cron.allow which contains the names of those allowed to schedule jobs. c. create a file called /etc/cron.deny containing all regular usernames. d. create two empty files called /etc/cron.allow and /etc/cron.deny		View Answer
Which of the following tasks is not necessary when creating a new user by editing the /etc/passwd file? Choose one: a. Create a link from the user's home directory to the shell the user will use. b. Create the user's home directory c. Use the passwd command to assign a password to the account. d. Add the user to the specified group.		View Answer
Where is a good place to store shell scripts that are for use by the author? A) ~/bin B) /bin C) /usr/bin D) /root		View Answer
You have a tab delimited file called phonenos and want to change each tab to four spaces. What command can you use to accomplish this? Choose one: a. expand -t4 phonenos b. expand phonenos c. expand -n4 phonenos d. expand -t phonenos		View Answer
You issue the command head *. What would the resulting output be? Choose one: a. The first ten lines of each file in the working directory would be displayed preceeded by the file's name. b. The first five lines of each file in the working directory would be displayed preceeded by the file's name. c. The name of each file in the working directory would be displayed. d. The first ten lines of each file in your home directory would be displayed preceeded by the file's name.		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. The contents of the file dog and the file cat.		View Answer
You read an article that lists the following command: dd if=/dev/fd0 bs=512 of=/new What does this accomplish? Choose one: a. It copies the contents of a floppy disk to a file called new. b. It copies the file new to a floppy disk. c. It formats a floppy d. It erases a floppy		View Answer
Each inode contains extensive information on a file. Which of the following is not contained in the inode. Choose one: a. file size b. filename c. file's owner d. number of links to the file		View Answer
How Does Linux Kernel Versioning Work?		View Answer
What file defines the levels of messages written to system log files?		View Answer
You need to copy all the files and directories contained in the home directory to another location. What utility can you use for this? Choose one a. cpio b. cp c. mv d. mvdir		View Answer