Question 1

What command can be used to replace characters in a file sent via Standard Input?

Accepted Answer

A)  tr 
B)  rt 
C)  ts 
D)  st

Question 2

​Match each correct item with the statement below.​
a.​counter variable
b.decision construct​
c.​environment variables
d.​file descriptors
e.​hashpling
f.loop construct​
g.​redirection
h.Standard Error (stderr)​
i.​Standard Input (stdin)
j.Standard Output (stdout)
-​The first line in a shell script, which defines the shell that will be used to interpret the commands in the script file.

Accepted Answer

The answer of ​Match each correct item with the statement...

Question 3

To prevent a file from being cleared by the BASH shell and append output to the existing output, you can specify three > metacharacters alongside the file descriptor.

Accepted Answer

A) True 
 B)False

Question 4

Which command can be used to count the number lines, words, and characters in a file?

Accepted Answer

A)  pr 
B)  nl 
C)  tr 
D)  wc

Question 5

What character combination at the start of a shell script are referred to as a hashpling, and allow for the specification of the shell that interprets the contents of the script?

Accepted Answer

A)  ​@! 
B)  ​#! 
C)  ​// 
D)  ​->

Question 6

Select the two commands below that will provide the number of lines in a file, and the number of characters in a file, respectively:​

Accepted Answer

A)  ​count -c 
B)  ​pr -d 
C)  ​wc -l 
D)  ​wc -c

Question 7

​Match each correct item with the statement below.​
a.​counter variable
b.decision construct​
c.​environment variables
d.​file descriptors
e.​hashpling
f.loop construct​
g.​redirection
h.Standard Error (stderr)​
i.​Standard Input (stdin)
j.Standard Output (stdout)
-​A special construct used in a shell script to execute commands repetitively. Common decision constructs include for and while.

Accepted Answer

The answer of ​Match each correct item with the statement...

Question 8

In order to redirect a file to the standard input of a command, what metacharacter should be used?

Accepted Answer

A)  > 
B)  # 
C)  | 
D)  <

Question 9

You are limited to using one pipe | metacharacter on the command line to pipe information from one command to another command.

Accepted Answer

A) True 
 B)False

Question 10

Most commands that are run by the shell are run in a separate ____________________, which is created by the current shell.

Accepted Answer

The answer of Most commands that are run by the...

Question 11

​Match each correct item with the statement below.​
a.​counter variable
b.decision construct​
c.​environment variables
d.​file descriptors
e.​hashpling
f.loop construct​
g.​redirection
h.Standard Error (stderr)​
i.​Standard Input (stdin)
j.Standard Output (stdout)
-​A file descriptor that represents information input to a command during execution.

Accepted Answer

The answer of ​Match each correct item with the statement...

Question 12

​Match each correct item with the statement below.​
a.​counter variable
b.decision construct​
c.​environment variables
d.​file descriptors
e.​hashpling
f.loop construct​
g.​redirection
h.Standard Error (stderr)​
i.​Standard Input (stdin)
j.Standard Output (stdout)
-​A file descriptor that represents any error messages generated by a command.

Accepted Answer

The answer of ​Match each correct item with the statement...

Question 13

You can use the sed command to remove unwanted lines of text.

Accepted Answer

A) True 
 B)False

Question 14

What number represents the stderr file descriptor?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3

Question 15

​Match each correct item with the statement below.​
a.​counter variable
b.decision construct​
c.​environment variables
d.​file descriptors
e.​hashpling
f.loop construct​
g.​redirection
h.Standard Error (stderr)​
i.​Standard Input (stdin)
j.Standard Output (stdout)
-​A variable that is altered by loop constructs to ensure that commands are not executed indefinitely.

Accepted Answer

The answer of ​Match each correct item with the statement...

Question 16

​Match each correct item with the statement below.​
a.​counter variable
b.decision construct​
c.​environment variables
d.​file descriptors
e.​hashpling
f.loop construct​
g.​redirection
h.Standard Error (stderr)​
i.​Standard Input (stdin)
j.Standard Output (stdout)
-​The numeric labels used to define command input and command output.

Accepted Answer

The answer of ​Match each correct item with the statement...

Question 17

The ____________________ command takes user input from stdin and places it in a variable specified by an argument.

Accepted Answer

The answer of The ____________________ command takes user input from...

Question 18

Detail shell scripts and explain how they are used and executed.

Accepted Answer

The answer of Detail shell scripts and explain how they...

Question 19

The environment variables that are set by default and their current values can be viewed with what command?

Accepted Answer

A)  env 
B)  get 
C)  set 
D)  setenv

Question 20

Select the metacharacter that can be used to send the standard output of one command to another command as standard input:

Accepted Answer

A)   
D)  #

Exam 7: Working With the Bash Shell

What command can be used to replace characters in a file sent via Standard Input?

To prevent a file from being cleared by the BASH shell and append output to the existing output, you can specify three > metacharacters alongside the file descriptor.

Which command can be used to count the number lines, words, and characters in a file?

What character combination at the start of a shell script are referred to as a hashpling, and allow for the specification of the shell that interprets the contents of the script?

Select the two commands below that will provide the number of lines in a file, and the number of characters in a file, respectively:​

In order to redirect a file to the standard input of a command, what metacharacter should be used?

You are limited to using one pipe | metacharacter on the command line to pipe information from one command to another command.

Most commands that are run by the shell are run in a separate ____________________, which is created by the current shell.

You can use the sed command to remove unwanted lines of text.

What number represents the stderr file descriptor?

The ____________________ command takes user input from stdin and places it in a variable specified by an argument.

Detail shell scripts and explain how they are used and executed.

The environment variables that are set by default and their current values can be viewed with what command?

Select the metacharacter that can be used to send the standard output of one command to another command as standard input:

Select the two commands below that will provide the number of lines in a file, and the number of characters in a file, respectively: