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INTERVIEW QUESTIONS OPERATING SYSTEMS LINUX DETAILS

Question: When typing at the command line, the default editor is the _____________ library.

Answer:
Answer: readline

By default, your shell used the readline library in emacs mode as its
command line editor.

Category Linux Interview Questions & Answers - Exam Mode / Learning Mode
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Question: When typing at the command line, the default editor is the _____________ library.

Answer:


Answer: readline

By default, your shell used the readline library in emacs mode as its
command line editor. Source: CoolInterview.com



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Related Questions
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After typing in a new command and pressing enter, you receive an error message indicating incorrect syntax. This error message originated from..
Choose one

a. The shell
b. The operating system
c. The command
d. The kernel
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You are entering a long, complex command line and you reach the right side of your screen before you have finished typing. You want to finish typing the necessary commands but have the display wrap around to the left. Which of the following key combinations would achieve this?
Choose One

a. Esc, /, Enter
b. /, Enter
c. ctrl-d, enter
d. esc, /, ctrl-d
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You want to enter a series of commands from the command-line. What would be the quickest way to do this?

Choose One
a. Press enter after entering each command and its arguments
b. Put them in a script and execute the script
c. Separate each command with a semi-colon (;) and press enter after the last command
d. Separate each command with a / and press enter after the last command
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What can you type at a command line to determine which shell you are using?
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Which of the following interprets your actions when typing at the command line for the operating system? Choose One

a. Utility
b. Application
c. Shell
d. Command
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You have created a subdirectory of your home directory containing your scripts. Since you use the bash shell, what file would you edit to put this directory on your path?
Choose one:

a. ~/.profile
b. /etc/profile
c. /etc/bash
d. ~/.bash
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What file contains the default environment variables when using the bash shell?
Choose one:

a. ~/.profile
b. /bash
c. /etc/profile
d. ~/bash
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In order to improve your system's security you decide to implement shadow passwords. What command should you use?
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When looking at the /etc/passwd file, you notice that all the password fields contain 'x'. What does this mean?
Choose one:

a. That the password is encrypted.
b. That you are using shadow passwords.
c. That all passwords are blank.
d. That all passwords have expired.
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When you look at the /etc/group file you see the group kmem listed. Since it does not own any files and no one is using it as a default group, can you delete this group?
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You need to delete the group dataproject. Which two of the following tasks should you do first before deleting the group?

A. Check the /etc/passwd file to make sure no one has this group as his default group.
B. Change the members of the dataproject group to another group besides users.
C. Make sure that the members listed in the /etc/group file are given new login names.
D. Verify that no file or directory has this group listed as its owner.

Choose one:

a. A and C
b. A and D
c. B and C
d. B and D
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You changed the GID of the sales group by editing the /etc/group file. All of the members can change to the group without any problem except for Joe. He cannot even login to the system. What is the problem?
Choose one:

a. Joe forgot the password for the group.
b. You need to add Joe to the group again.
c. Joe had the original GID specified as his default group in the /etc/passwd file.
d. You need to delete Joe's account and recreate it.
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What command is used to remove the password assigned to a group?
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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
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All groups are defined in the /etc/group file. Each entry contains four fields in the following order.
Choose one:

a. groupname, password, GID, member list
b. GID, groupname, password, member list
c. groupname, GID, password, member list
d. GID, member list, groupname, password
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After bob leaves the company you issue the command userdel bob. Although his entry in the /etc/passwd file has been deleted, his home directory is still there. What command could you have used to make sure that his home directory was also deleted?
Choose one:

a. userdel -m bob
b. userdel -u bob
c. userdel -l bob
d. userdel -r bob
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Mary has recently gotten married and wants to change her username from mstone to mknight. Which of the following commands should you run to accomplish this?
Choose one:

a. usermod -l mknight mstone
b. usermod -l mstone mknight
c. usermod -u mknight mstone
d. usermod -u mstone mknight
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You have created special configuration files that you want copied to each user's home directories when creating new user accounts. You copy the files to /etc/skel. Which of the following commands will make this happen?
Choose one:

a. useradd -m username
b. useradd -mk username
c. useradd -k username
d. useradd -Dk username
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You issue the following command useradd -m bobm But the user cannot logon. What is the problem?
Choose one:

a. You need to assign a password to bobm's account using the passwd command.
b. You need to create bobm's home directory and set the appropriate permissions.
c. You need to edit the /etc/passwd file and assign a shell for bobm's account.
d. The username must be at least five characters long.
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When using useradd to create a new user account, which of the following tasks is not done automatically.
Choose one:

a. Assign a UID.
b. Assign a default shell.
c. Create the user's home directory.
d. Define the user's home directory.
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