ITN 170 Chapter 3 Lab Quizzes

The less command offers less functionality than the more command. True or False?

False

A directory is a type of file. True or False?

True

Linux has only one root directory per directory tree. True or False?

True

When using the vi text editor, which of the following keys, when in command mode, will move to the last line in the document? a. G b. L c. P d. W

a. G

Garrett wants to search through a csv file to find all rows that have either the name John or Bob in them and display them out to the terminal. Which of the following commands could Garrett use to perform this search? a. grep -E "(John|Bob)" salesemployees.csv b. grep (John|Bob) salesemployees.csv c. grep -E (John|Bob) salesemployees.csv d. egrep (John|Bob) salesemployees.csv

a. grep -E "(John|Bob)" salesemployees.csv

hase is trying to extract records for employees 423 through 428 out of a comma separated values file and store them in another one. Which of the following commands would accomplish this? (Choose all that apply.) a. cat employees.csv | grep 423,424,425,426,427,428 > employees.csv b. cat employees.csv | grep "42[3-8]" > employees-newhires.csv c. grep "42[3-8]" employees.csv > employees-newhires.csv d. grep "42[3-8]" < employees.csv > employees-newhires.csv

b. cat employees.csv | grep "42[3-8]" > employees-newhires.csv c. grep "42[3-8]" employees.csv > employees-newhires.csv d. grep "42[3-8]" < employees.csv > employees-newhires.csv

The vi editor can function in which two of the following modes? (Choose both that apply.) a. text b. command c. input d. interactive e. insert

b. command e. insert

Jo has received a text file which contains multiple instances of his name spelled correctly as well as multiple instances spelled as Joe. Which of the following commands would search a text file for any occurrences of either spelling and display them out to the terminal? (Choose three.) a. grep "Joe?" document1.txt b. grep -E "Joe?" document1.txt c. grep "Joe*" document1.txt d. grep -E "Joe*" document1.txt

b. grep -E "Joe?" document1.txt c. grep "Joe*" document1.txt d. grep -E "Joe*" document1.txt

Which of the following commands will not interpret regular expressions, which translates into faster results being returned? (Choose all that apply.) a. grep b. grep -F c. egrep d. fgrep

b. grep -F d. fgrep

A special device file is used to ___________. a. enable proprietary custom-built devices to work with Linux b. represent hardware devices such as hard disk drives and ports c. keep a list of device settings specific to each individual user d. do nothing in Linux

b. represent hardware devices such as hard disk drives and ports

Which command searches for and displays any text contents of a binary file? a. text b. strings c. od d. less

b. strings

Using wildcard metacharacters, how can you indicate a character that is not an a or b or c or d? a. [^abcd] b. not [a-d] c. [!a-d] d. !a-d

c. [!a-d]

A user typed in the command pwd and saw the output: /home/jim/sales/pending. How could that user navigate to the /home/jim directory? a. cd .. b. cd /jim c. cd ../.. d. cd ./.

c. cd ../..

What will the following wildcard regular expression return: file[a-c]? a. filea-c b. filea, filec c. filea, fileb, filec d. fileabc

c. filea, fileb, filec

If "resume" is the name of a file in the home directory off the root of the filesystem and your present working directory is home, what is the relative name for the file named resume? a. /home/resume b. /resume c. resume d. \home\resume

c. resume

Which of the following is an absolute pathname? (Choose all that apply.) a. Home/resume b. C:\myfolder\resume c. resume d. /home/resume e. C:home/resume

d. /home/resume

When using the vi text editor, which of the following keys, when in command mode, will change to insert mode and place the cursor at the end of the current line? a. i b. a c. I d. A

d. A

After typing the ls -a command, you notice a file whose filename begins with a dot ( . ). What does this mean? a. It is a binary file. b. It is a system file. c. It is a file in the current directory. d. It is a hidden file.

d. It is a hidden file.

After typing the ls -F command, you notice a filename that ends with an * (asterisk) character. What does this mean? a. It is a hidden file. b. It is a linked file. c. It is a special device file. d. It is an executable file.

d. It is an executable file.

How can you specify a text pattern that must be at the beginning of a line of text using a regular expression? a. Precede the string with a /. b. Follow the string with a \. c. Precede the string with a $. d. Precede the string with a ^.

d. Precede the string with a ^.

How can a user switch from insert mode to command mode when using the vi editor? a. Press the Ctrl+Alt+Del keys simultaneously. b. Press the Del key. c. Type a : character. d. Press the Esc key.

d. Press the Esc key.

If a user's current directory is /home/mary/project1, which command could she use to move to the etc directory directly under the root? a. cd .. b. cd /home/mary/etc c. cd etc d. cd /etc e. cd \etc

d. cd /etc

Kate wants to compare two text files to identify what might have been changed from one version to another. Which of the following commands can she use to do this? a. match document1.txt document2.txt b. version --compare document1.txt document2.txt c. compare document1.txt document2.txt d. diff document1.txt document2.txt

d. diff document1.txt document2.txt

The tac command _________. a. is not a valid Linux command. b. displays the contents of hidden files . c. displays the contents of a file in reverse order last word on the line first and first word on the line last. d. displays the contents of a file in reverse order last line first and first line last.

d. displays the contents of a file in reverse order last line first and first line last.

What will typing q! at the : prompt in command mode do when using the vi editor? a. quit as no changes were made b. quit after saving any changes c. nothing because the ! is a metacharacter d. quit without saving any changes

d. quit without saving any changes

A user types the command head /poems/mary. What will be displayed on the terminal screen? a. the first line of the file mary b. the header for the file mary c. the first 20 lines of the file mary d. the last 10 lines of the file mary e. the first 10 lines of the file mary

e. the first 10 lines of the file mary

Mike has changed directory into one subdirectory after the next and has lost track of where he's at in the directory tree. Which of the following commands can he use to tell him the full path to the current subdirectory he is in? a. cd - b. pwd c. cwd d. ls -dir

pwd

Which command would a user type on the command line to find out the current directory in the directory tree? a. pd b. cd c. where d. pwd

pwd