NOS 120 midterm
Keep the /lib directory because it holds security information, shared library images, kernel modules and other important files.
A friend of yours is trying to make more space on his hard disk drive and is considering deleting the /lib directory because he has heard it mostly contains games that he doesn't use. What is your recommendation?
ls/home/bramirez/accounting
A member of your department has given you permissions to view the contents of the accounting directory under his home directory. The name of his home directory is bramirez. Which of the following commands should you use to display the contents of the accounting directory?
It changes all instances of capitol to capital.
As you look over the shoulder of an employee who is using the vi editor, you see her use the command :1,$s/capitol/capital. What does this command do?
cal
Before you make the note in Question 1, you decide to determine Friday's date, so that you can include it in your note. What Linux command can you use to quickly determine the Friday's date?
False
Emacs is a modal editor. (T/F)
Press Ctrl+g while in command mode.
How can you find out information about the status of an editing session while in the vi editor? (Choose all that apply.)
-From command mode, enter :help -From the regular command line outside of vi, enter man vi.
How can you get help for using the vi editor? (Choose all that apply.)
editor type :!lpr filename and press Enter
How can you print a file while you are in the vi editor?
The more command enables you to view a file's contents by scrolling down.
How would you describe the purpose of the more command?
To run more than one command on a single line use the ; (semicolon) character to separate each command.
How you can run more than on command on a single line?
swap partition
In UNIX and Linux systems, what source of extra memory space is used when working on tasks and files that exceed the RAM capacity on chips in the computer?
tail -n 2 project
In your document files, you often put the date you created the file and the date you last modified it in the last two lines of the file. What command can you use to look at only the last two lines of the file called, project?
cp -u
It's late and you have been working all day to finish a report. Before you go home, you want to copy several files, including your report file. What copy command should you use to ensure that you don't inadvertently copy an older report file over the newer report file you've been working on for the last four hours?
-a mainframe computer -a desktop PC -a server -a workstation
On which of the following types of computers might you find a UNIX or Linux operating system? (Choose all that apply.)
Log in remotely to another computer on a network.
SSH can be used to ___________________.
extents
Some of the users in your company create and delete so many files that they have problems with fragmented disks. Which of the following new features in the ext4 file system help to reduce fragmentation problems?
stdout
Standard output is referred to as which of the following?
Alt + <
The _____ Emacs command is used to move the cursor to the beginning of the file.
The administrative account that has complete access to UNIX/Linux system.
This is your first day on the job as a Linux server administrator and your boss gives you the password for root. What is root?
Emacs
UNIX/Linux normally include two editors: vi and _____.
sort -r
What command enables you to sort the contents of a file in revers order?
American Standard Code for Information Interchange
What is the name of a standardized bit pattern for characters and numbers that is used by most computer operating systems?
Compiling is a process of translating a program file into machine-readable language
What is the process called compiling?
Telnet can be used to connect a UNIX, Linux, or Windows PC to a remote computer.
What is the purpose of Telnet?
wq
When editing a text file with the vi, if you want to save your changes and exit right away, you can use ____ or ZZ from command mode.
character special file
When you connect a printer via a USB port on your Linux computer, which type of device special file is used to handle streams of data sent to and from the printer?
Use Ctrl+Spacebar to mark the beginning of the text and Alt+w to mark the end as well as to copy the text.
When you copy text in Emacs, you must mark the text you want to copy by using which of the following commands?
The current logged in user
When you enter the who command, what information do you see? (Choose all that apply.)
Owner has read, write, execute; group has execute; others have execute.
When you see the permissions rwx--x--x associated with a file, what permissions are granted?
Enter vi and the filename, such as "vi myfile".
When you started the vi editor, you forgot to specify the name for the new file you are creating. To save steps next time, how can you specify the name of a new file when you first start vi?
-d:
When you use the paste command, columns of information are separated by a tab. However, your boss wants the columns separated by a colon. What option enables you to specify the colon as the separator?
Virtual memory is located on disk, such as in swap space.
Where is your virtual memory located?
-less -cat
Which of the following are examples of Linux distributions? (Choose all that apply.)
-NTFS -vfat -ufs -ext
Which of the following are files systems supported by UNIX and Linux operating systems?
-Options -Edit -Buffers
Which of the following are menus that you would find on the menu bar in Emacs? (Choose all that apply.)
-read -write -execute
Which of the following are permissions that can be granted to a file? (Choose all that apply.)
-fixed-length -variable-length
Which of the following are ways in which you can structure a record containing data? (Choose all that apply.)
-move a file -rename a file
Which of the following can be accomplished with the mv command? (Choose all that apply.)
sort vendor_name
Which of the following commands can you use to sort the file vendor_name and display the results on the screen?
chmod
Which of the following commands enable(s) you to set permissions on a directory after you create it? (Choose all that apply.)
Ctrl+h
Which of the following commands enables you to use online help in Emacs?
cp AR2008 AR2008.bak
Which of the following commands would you use to make a backup copy of the file AR2008?
The two files must have a common field, such as last name.
Which of the following conditions must be met for you to combine two files using the join command? (Choose all that apply.)
-Press the left arrow key -Press h
Which of the following enables you to move the cursor to the left while you are in command mode in the vi editor?
System V
Which of the following is the UNIX distribution originally developed through AT&T Bell Labs?
Bash shell
Which shell is used by Linux as the default command interpreter?
Command mode, type/receive and press Enter
While editing a file in vi, you realize you have been spelling the word receive as recieve. How can you find all occurrences of your misspelled receive? (Choose all that apply.)
Us the Ctrl+x, u command
While working in the Emacs editor, you delete a section of text and then decide to undo your deletion. Which of the following commands should you use?
Ctrl+b
While you are typing a command, you misspell the name of a file you want to specify with the command. Which of the following command line key combinations enables you to go back and fix your error?
:r summary_data
While you are working on report in vi, you decide to insert information from another test file in your home directory called summary_data. Which of the following commands (from command mode) enables you to add the contents of summary_data?
\t
You are always scheduled for two or three meetings each day and need to keep an eye on the time. What PS1 variable parameter can you set in order to have your command prompt display the current time?
/var
You are curious about the error and system logs kept by your operating system. In what main directory under the root (/) would you most likely find these logs?
rmdir
You are doing some "house cleaning" and want to delete several empty directories. Which of the following commands can you use? (Choose all that apply.)
cut -f1,7 addresses
You are examining your addresses file, which contains the first and last names of people you know as well as their street address, city, state, zip code, and telephone number. You want to print a list of last names, which is field 1, and telephone numbers, which is field 7. Which of the following commands enables you to print this list?
The very first character in the line for an entry will be "d" for directory or "-" for an ordinary file.
You are helping a friend who is new to Linux. You want to determine which entries under her home directory are directories instead of files. When you perform a long listing of the home directory's contents, what do you use to distinguish a directory from a file?
From command mode, type :!update and press Enter.
You are in the vi editor and it's now noon. Every day at noon you run a program called update, which updates a database. How can you run the program without closing your vi session?
cp MemoRequest Memos
You are in your home directory and need to copy the file MemoRequest to a folder under your home directory called Memos. Which of the following commands do you use?
-It is modal -It is a text editor -Most UNIX/Linux distributors come with vi. -It is a screen editor
You are preparing to give a training session on the vi editor. How would you describe it?
>
You are starting a new year and need to create 10 empty files for your accounting system. Which of the following commands or operators enable you to quickly create these files? (Choose all that apply.)
Enter sort -t: +5 datastore 2> error
You are trying to use the command sort -t: +5 datastore, but you get an error message each time you try it. How can you save the error message in a file called error, so you can e-mail the file to your computer support person?
From command mode, enter :set number
You are using the vi editor to create a list of tasks on each line and you would like an easy way to number each line (task) listed in the file. Which of the following is an easy solution?
a period (.)
You are using vi to edit a file and have just entered 12 new lines. You need to replicate the same 12 lines right after you entered them. What command-mode command can you type to replicate the lines?
q
You are working with a new colleague who has entered the man command, but who does not know how to end the man session to return to the regular command prompt. What keystrokes do you show your colleague to end the man session? (Choose the best option .)
Alt + q
You can use the _____ command to turn on word wrap feature in Emacs.
Ctrl + h
You can view general Emacs documentation by entering ____(press this one or two times) while you are in Emacs.
Linux is case sensitive, so to display a calendar you must use the cal command and not Cal.
You enter Cal on the command line to view a calendar but only see an error message. Explain why you got the error message.
find -name supplemental
You have a lot of sub directories under your home directory and know that you saved the file supplemental in one of them, but you are not sure which one. After you use cd to change to your home directory, which of the following commands enables you to search all of your sub directories for the file?
cut -f2 personnel
You have a personnel file that contains the names, addresses, and telephone numbers of all employees. The first field in the personnel file is the employee number and the second field is the employee last name. The third field is the first name and middle initial. Because there are no employees with the same last name, you want to check the file by last name to make certain all employees are included. Which of the following commands should you use?
clear
You have been entering lots of commands and now your terminal window is cluttered will all kinds of activity. What command can you use to clear your window of the clutter?
pwd
You have been working in several directories for the past hour and right now you don't remember which directory you're in currently. What command can you use to show your current working directory?
Command mode :wq Command mode:ZZ Command mode:x
You have been working on a long vi text file and now you've got to rush off to a meeting. How can you quickly save your work and exit the vi editor? (Choose all that apply.)
./sum_report
You have created a script file called sum_report in your home directory and have made it executable. What command do you use to run the script?
ls *.txt
You have created many notes to yourself that end in .txt. Which of the following commands enables you to list all of the .txt files in your home directory while you are in the Bash shell?
man cat
You have forgotten the purpose of the -n option in the cat command. Which of the following can you enter at the Linux command line to find out what the -n option does when used with cat?
Ctrl+x,Ctrl+s is a command sequence that saves your file, but it does not cause Emacs to close.
You have just pressed Ctrl+x,Ctrl+s in the Emacs editor thinking that this will exit Emacs, but it seems like nothing has happened. What is the problem?
account??
You have many files that begin with the word "account" and that end with two digits to designate a year, such as account00, account01, and so on. What is the command that enables you to view all of these files that start with account?
unmount
You have mounted a remote network drive and now you want to unmount that drive. Which of the following commands do you use?
/etc
You have purchased a special monitor for your computer and the instructions tell you to make a minor modification to the inittab file. Where would you locate this file on a typical Linux system.
Press Ctrl+x , Ctrl+f and provide the path to the file as well as the file name.
You have started Emacs without specifying a file name for the existing file you want to open. Is there a way to specify the file name and open the file after you've started Emacs, and if so how?
passwd
You haven't changed your user account password for several months and now decide to create a new password. Which of the following commands should you use?
sort -k 4 birds
You keep a yearly record of the birds you've seen in your town. The name of the file is birds. The file contains the following fields: name (field 1), markings (field 2), year(s) viewed (field 3), and location (field 4). You want to review the contents of the file, sorted by location. Which of the following commands do you use?
rm customer*
You need to delete 30 files that all start with the letters "customer," such as customer_accounts, customer_number, and so on. Which of the following commands enables you to quickly delete these files?
cat >> Annual_Report
You need to type in a line of text to the end of a file called Annual_Report. Which of the following commands enables you to add the text?
The second partition on your main disk.
You receive a message that you've successfully backed up hda2 on your Linux system. What is hda2?
Use a GUI menu option to log out or enter an appropriate command for the shell you are using. such as exit or logout (if there is no GUI desktop in use).
You share a Linux computer with a coworker. What is the best way to exit your UNIX or Linux session when you are done?
peer-to-peer network.
You work at a law firm with eight other people. All of the eight computers on the firm's network use wireless connections to communicate with one another without a server. This is an example of which of the following?
H
You're editing a document using vi and you are near the edge of a page. You want to quickly go back to the top of the page to check something you said. Which of the following command-line commands enables you to quickly go to the top of the page?
cd
You're frantically trying to get ready for a meeting and want to access a file in your home directory, but you are currently working in a public directory open to all users. What command can you enter to instantly go to your home directory?
Press the up key one time.
You're in a hurry and have just executed a command to print the contents of a file; and you decide you want another copy of the printout. What key sequence can you use to repeat the last command, which was used to print the file?
Alt+<
You've just finished entering a one-page memo in Emacs and now want to quickly go to the beginning so you can reread it. What command enables you to quickly go to the beginning?
Press Ctrl+s
You've used Emacs to write advertising copy about a new software product your company has developed. Now you find out that the name of the product has been changed slightly. What command can you use to track down all references to the old name so you can locate them?
awk
Your boss asks you to create a professional-looking report from the contents of two files. Which of the following tools enables you to produce a polished report?
cat > Meeting
Your boss drops by your office in a hurry to ask you to attend a meeting at 10:30 on Friday morning and you can't find a pen to make a note as a reminder. What Linux command can you use to make a quick note to store in a file called Meeting?
rm -i
Your boss is planning to do some house cleaning by deleting several old files. However, she mentions that she doesn't want to delete an important file inadvertently. What command can she use so that she is prompted to make sure she wants to delete a particular file?
The command to view hidden files is ls -a . In the resulting list of files, the hidden files are the files that start with a dot(.) in front of the file name.
Your boss wants to use the command to view hidden files and also wants to know how to find them among other files. What do you tell her?
While in command mode, move the cursor to the first character in the line and press dd.
Your colleague has written a line of text in vi and now wants to delete the line, but save its contents in a buffer in case he decides to bring back the line he deletes. What do you recommend?
Linux supports both the UDF and iso9660 file systems for CD and DVD use.
Your company is discussing plans to migrate desktop and laptop users to Linux. One concern raised by the users is whether Linux supports the use of CD's and DVDs for both work files and for listening to music. Which of the following is an appropriate answer?
date -u
Your international company is scheduling a meeting among managers in Canada, the United States, Spain, Sweden, and Hong Kong on the basis of Greenwich Mean Time (GMT). What command enables you to display the current time in GMT?
-root -swap -/boot
Your new colleague asks which partitions vendors recommend setting up on a Linux system. Which of the following partitions do you include in your response? (Choose all that apply.)
touch
Your project team uses a group of the same files and tracks whether they are still in use by looking at the last modified date. You need to show that a series of files are still in use by changing the last modified date to today. What command do you use?
