Unix Chapter 1
The command line prompt for the system administrator is represented by the ___ symbol.
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Which of the following are typical roles for a UNIX/Linux system?
-Standalone computer -server -client -network operating system
Which of the following can you use to view the next page when viewing a file using the less command?
-spacebar -z -Pg Dn
Which of the following are shells employed on UNIX/Linux systems?
-tcsh -csh -ksh -ash
In newer versions of UNIX passwords must contain how many characters?
6
From the Linux command line, press ___ to delete a word or consecutive characters.
Alt+d
Linux uses which of the following shells as the default command interpreter?
Bash
From the Linux command line, press ___ to move the cursor to the beginning of the command line.
Ctrl+a
You are using the cat command to create a file. When you are finished typing the text into the file, you press the letter s to stop; however, the file remains open. What should you type instead?
Ctrl+d
True or False. In order to log out of the Bourne shell in the UNIX operating system, you would type logout.
False
True or False. On some UNIX/Linux systems, the administrator must execute the makedatabase command, which creates a database, before the whatis command operates properly.
False
True or False. The key sequence Ctrl+a deletes the word at the current location of the cursor when you are creating a command on the command line.
False
True or False. When you are using a terminal window and it is cluttered with commands and information, use the blank command to clear the screen.
False
True or False. You would use a(n) exclamation point in order to exit out of the online manual in UNIX.
False
What happens when you use the command cat >> accounts
It appends what you type next to the end of the accounts file
Which of the following modes is reserved for the system administrator in UNIX/Linux?
Kernel mode
You have decided to change your password. To do this, you must first ____.
Know your current password
Yes or No. Is a server often referred to as a client?
No
Your organization has telecommuters who remotely log into a UNIX server using Mac OS X computers at home. What should they use to log in with the greatest security?
SSH
Another name for the Unix system administrator is ___.
Superuser
___ refers to a command's format and wording as well as the options and arguments you can use to extend and modify functions.
Syntax
Which of the following is an Internet Terminal emulation program?
Telnet
True or False. A mainframe operating system controls a large computer system that offers extensive processing, mass storage, and client access for industrial-strength computing.
True
True or False. In UNIX/Linux, a shell operates between the user and the kernel, enabling the user to execute commands.
True
True or False. The > character is a redirection symbol in a UNIX/Linux command.
True
True or False. The Korn shell in UNIX/Linux includes many extensions, such as history feature, that lets you use a keyboard shortcut to retrieve commands that you have previously entered.
True
True or False. The whatis command displays a brief description of a command.
True
True or False. Using the -d option with the main command to print information for debugging
True
You can access the command history with which of the following keys?
Up and down arrow keys
Yes or No. Is the UNIX operating system case sensitive?
Yes
Yes or No. Is the greater than sign > an example of a redirection symbol?
Yes
In UNIX/Linux, a kernel is
a set of core operating system programs
From the Linux command line, press ___ to move the cursor to the position just before the first character of the next word.
alt+l
When viewing the contents of a file with the less command press ___ to return to a previous screen.
b
What command can you type on you Linux workstation to view the current month?
cal
Provide the Linux command used to display the calendar for 2013 in Julian date format
cal -j 2013
A redirection operator may be used to redirect the output of a command into a file. Create a file called month containing the current month.
cal > month
Use the cat command to view the contents of /etc/shells
cat /etc/shells
View the contents of /etc/shells
cat /etc/shells
Use the cat command to conjunction with the redirection symbol to create a new file named notes.
cat > notes
Which of the following represents the proper syntax of the date command in UNIX/Linux?
date
You forgot your watch this morning and need to check the time. What command can you use to check the current time?
date
Provide the Linux command used to display your system date in Coordinate Universal Time (UTC)
date -u
Append the current date and time to the file notes
date >> notes
On one command line, provide the Linux command used to view the current date and this months calendar.
date; cal
Display the first 10 lines of the /etc/termcap file
head /etc/termcap
Which of the following commands will help you find the UNIX online reference manuals?
man
You need to review the documentation for the cat command. What should you type on the command line to see this documentation?
man cat and press Enter
Use the man program to find out what the -R option does when used with the date command.
man date
Identify the Linux command used to display the detailed online help for the who command.
man who
In Linux, you can use the ___ command to read a large file, screen by screen.
more
You want to view the contents of the names file which is located in the programs directory. You are currently in your user home directory. Which command will enable you to view the entire contents of the file?
more /programs/names
To change your password from the command prompt in Linux, type ___ and press Enter
passwd
The syntax for the password command is ___.
passwd -option argument
In your accounting firm, there are 17 computer users whose computers share information and access information on other computers, all without management by a central computer. This is an example of a(n) ___.
peer-to-peer network
Identify the command for exiting the man program.
q
When viewing the contents of a file with the more command, press ___ to terminate the display
q
A(n) ___ is used to create a new file or to overwrite an existing file by attaching it to a command that produces output.
redirection symbol
In Linux, you can execute multiple commands on one command line by using a ___ between commands.
semicolon
Display the last 5 lines of the /etc/termcap file
tail -5 /etc/termcap
What command can you use to see only the final eight lines of the accounts file, which is in your current directory?
tail -n 8 accounts
Display the last 10 lines of the /etc/termcap
tail /etc/termcap
To display a brief summary of a particular command you would use which of the following commands?
whatis
What command can you use for a quick reference to the purpose of the ping command?
whatis ping
Identify the command used to display the brief description of the who command.
whatis who
Which of the following commands helps an individual determine who is logged in to a UNIX system?
who
Use the who command and display the line of column headings with the command output.
who -H
Determine when the computer on which you are working on last booted.
who -b
Use the who command to see a quick list of current users that shows only login names and the total number of users on the system.
who -q
Use the who command to determine the amount of time that has elapsed with no activity in a users session.
who -u
Use the who command to see a list of users with idle times and column headings
who -uH
Run the who -uH and w commands using one command-line sequence to compare the results.
who -uH; w
Use the redirection symbol to redirect the output of the who command to a file named current_users.
who > current_users
Identify the Linux command to determine which terminal you are using or what time you logged in.
who am i