Deck 7: Advanced Shell Programming

Question 1

The ____ operator of the test command,combines two expressions and tests a logical OR relationship between them.

A)|
B)||
C)-O
D)-o

Answer 1

D

Question 2

The line in the script for setting the Bash shell is: ____.

A)#!/bin/bash
B)!#/bin/bash
C)#/bin/bash
D)!/bin/bash

Answer 2

A

Question 3

After creating a flowchart,the next step in designing a program is to write the program code.

Answer 3

False

Question 4

The program development cycle begins with creating specifications for a program.

Question 5

A .bash_logout file in each Bash user's home directory executes commands when the user logs out.

Question 6

The .bashrc file is a hidden file contained in ____ directory.

A)the root
B)your home
C)the /usr
D)the /home

Question 7

When you create a script,you should include the command that sets the particular shell to use on ____.

A)the configuration file
B)your login script
C)the first line of the script
D)the last line of the script

Question 8

In a flowchart,a(n)____ is used to represent a decision.

A)diamond
B)rectangle
C)circle
D)arrow

Question 9

____ is a multifunction tool that enables you to manage openSUSE from one location.

A)User Manager
B)YaST
C)Control Panel
D)MC

Question 10

To view a list of the files in a directory,including the hidden files,you should enter ____.

A)ls -l
B)ls -r
C)ls -h
D)ls -a

Question 11

Pseudocode is a design tool only,and is never processed by the computer.

Question 12

Each record in the -etc-passwd file is simply a record with variable-length fields separated by ____.

A)dashes (-)
B)commas (,)
C)semicolons (;)
D)colons (:)

Question 13

In UNIX-Linux,all shells support the same commands and programming statements.

Question 14

In a flowchart,a(n)____ is used to indicate process flow.

A)diamond
B)rectangle
C)circle
D)arrow

Question 15

For your own account,the shell that is set up by default is established by the system administrator in the ____ file.

A)/etc/shell
B)/etc/passwd
C)/etc/shadow
D)/etc/default

Question 16

The second step in the program development cycle is ____.

A)creating program specifications
B)coding the program
C)the design process
D)debugging

Question 17

A ____ is a logic diagram that uses a set of standard symbols to visually explain the sequence of events from the start of a process to its end point.

A)flowchart
B)map
C)block chart
D)pseudocode

Question 18

In a flowchart,a(n)____ is an on-page connector to continue process flow.

A)diamond
B)rectangle
C)circle
D)arrow

Question 19

In a flowchart,a(n)____ is used to represent a process.

A)diamond
B)rectangle
C)circle
D)arrow

Question 20

Each step in the program is represented by a(n)____ in the flowchart.

A)block
B)arrow
C)label
D)symbol

Question 21

____________________ enable you to determine the type of data needed for input,the processes that must be performed,and the output requirements.

Question 22

Match each option of the test command with a statement below.
a.-a
f.-n
b.!
g.-nt
c.-r
h.-s
d.-f
i.-e
e.-ne
true if a file exists and can be read

Question 23

Match each option of the test command with a statement below.
a.-a
f.-n
b.!
g.-nt
c.-r
h.-s
d.-f
i.-e
e.-ne
logical AND

Question 24

Two popular and proven analysis tools are used to help you design your programs to meet the program specifications: the flowchart and ____________________.

Question 25

A function name differs from a variable name because a function name is followed by a set of ____.

A)parentheses
B)curly brackets
C)square brackets
D)angle brackets

Question 26

Match each option of the test command with a statement below.
a.-a
f.-n
b.!
g.-nt
c.-r
h.-s
d.-f
i.-e
e.-ne
logical negation

Question 27

Match each option of the test command with a statement below.
a.-a
f.-n
b.!
g.-nt
c.-r
h.-s
d.-f
i.-e
e.-ne
performs a relational integer test

Question 28

What are pseudocode instructions used for?

Question 29

Match each option of the test command with a statement below.
a.-a
f.-n
b.!
g.-nt
c.-r
h.-s
d.-f
i.-e
e.-ne
true if a file exists

Question 30

Match each option of the test command with a statement below.
a.-a
f.-n
b.!
g.-nt
c.-r
h.-s
d.-f
i.-e
e.-ne
tests for a nonzero string length

Question 31

Match each option of the test command with a statement below.
a.-a
f.-n
b.!
g.-nt
c.-r
h.-s
d.-f
i.-e
e.-ne
compares the first file in the argument with the second file to determine if the first file is newer

Question 32

Match each option of the test command with a statement below.
a.-a
f.-n
b.!
g.-nt
c.-r
h.-s
d.-f
i.-e
e.-ne
true if a file exists and is a regular file

Question 33

____________________ instructions are similar to actual programming statements.

Question 34

The ____________________ that connect the symbols in a flowchart represent the direction in which the program flows.

Question 35

What are flowcharts used for?

Question 36

Match each option of the test command with a statement below.
a.-a
f.-n
b.!
g.-nt
c.-r
h.-s
d.-f
i.-e
e.-ne
true if a file exists and its size is greater than zero

Question 37

You can define functions from the command line by first entering the name of the function and then completing the ____________________ to define it.

Question 38

The -____________________-bashrc file sets default functions and aliases.

Question 39

To format record output you can use the translate utility,____.

A)tr
B)trns
C)trans
D)translate

Question 40

A simple way to delete a record using ____ is with the -d (delete)option.

A)awk
B)sed
C)test
D)tr

Question 41

What is a Boolean operator?

Question 42

The clear command is a useful housekeeping utility for clearing the screen,but you can use a faster method.Describe this alternative method.

Question 43

How can you view the most recent command's exit status?

Question 44

What is a shell function?

Question 45

What is the test command used for?

Question 46

If you are using the Bash shell,what scripts are run automatically when you log in?

Question 47

How can you set defaults for using the vi editor?

Question 48

What does "input validation" mean?