Linux Essentials Chapter 4 Exam

To be able to output messages to the screen, use the _______ command:

echo

The _______ command will print a list of the commands that you've previously executed.

history

Select the command that can report the location of a command:

which

To execute the same command as previously executed five commands ago, you would type:

!-5

The acronym CLI stands for:

Command Line Interface

A pair of double quotes ( " ) will prevent the shell from interpreting any metacharacter. True or False?

False

The double ampersand characters ( && ) are used to separate commands to be executed conditionally, where if the command to the left of the ampersands fails, then the command to the right of the ampersands will be executed. True or False?

False

Traditional UNIX command options used a single dash, like -a; _______ command options use two dashes like -all.

GNU

The acronym GNU stands for:

Gnu's Not Unix

Which environment variable contains a list of directories that is searched for commands to execute?

PATH

Which of the following are glob characters? (choose three)

The asterisk "*" /// The question mark "?" /// The square brackets "[" and "]"

A pair of single quotes ( ' ) will prevent the shell from interpreting any metacharacter. True or False?

True

The main purpose of using glob characters is to be able to provide a command a list of filenames. True or False?

True

The semicolon ";" can be used to separate multiple commands to be executed in order. True or False?

True

The shell program interprets the commands you type into the terminal, into instructions that the Linux operating system can execute. True or False?

True

Using a pair of back quotes ( ` ) will cause a shell to execute the back-quoted text as a command and substitute the output back into the original command. True or False?

True

Select all the applications that provide access to the Command Line Interface (CLI)? (choose two)

Virtual Terminal /// Terminal window

What one character treats the character that follows it as if it was surrounded by single quotes?

\