Linux+ Linux+ Basic Bash Scripting 2

Question 1

Which operator is used to append output to an existing file in Bash?

Accepted Answer

>>

Answer

>

Answer

|

Answer

&>

Question 2

What does the special variable $? represent in Bash?

Accepted Answer

The exit status of the last command

Answer

The current process ID

Answer

The script's filename

Answer

The number of arguments passed

Question 3

Given the script: `for i in {1..5}; do echo $i; done`, what is the output?

Accepted Answer

Prints 1 through 5 each on a new line

Answer

Prints {1..5} literally

Answer

Prints 0 through 4

Answer

Causes a syntax error

Question 4

Which command inside a Bash function returns a value to the caller?

Accepted Answer

return

Answer

exit

Answer

break

Answer

yield

Question 5

What is the purpose of the `read` command in a Bash script?

Accepted Answer

Reads a line of input from stdin into a variable

Answer

Reads the contents of a file into memory

Answer

Reads the next command from the script

Answer

Displays file contents to stdout

Question 6

In Bash, what does `[ -d /etc ]` test?

Accepted Answer

Whether /etc exists and is a directory

Answer

Whether /etc is a regular file

Answer

Whether /etc is readable

Answer

Whether /etc is non-empty

Question 7

Which shebang line correctly specifies Bash as the interpreter for a script?

Accepted Answer

#!/usr/bin/env bash

Answer

# /bin/bash

Answer

#bash

Answer

//bin/bash