Linux - 3.1.2 Quiz

What does the | (Pipe) command do in shell scripting?

• Connects the output of one command as the input to another command.

• Executes the command following it ONLY IF the preceding command fails.

• Redirects standard output to a file.

• Appends the standard output to the end of a file.

When does the || (OR) command execute the command following it?

• Only if the preceding command succeeds.

• Only if the preceding command fails.

• Regardless of the success or failure of the preceding command.

• Only if the file specified in the command exists.

What does the > (Output Redirection) command do in shell scripting?

• Redirects the standard output to a file, overwriting it if it exists.

• Appends the standard output to the end of a file.

• Redirects the input from a file to a command.

• Combines standard output and standard error to a specified file.

How does the << (Here Document) command function in shell scripting?

• Redirects standard output to a specified file.

• Allows multiple lines to be put into a command.

• Combines standard output and standard error to a specified file.

• Redirects the input from a file to a command.

5. What does the &> (Ampersand) command do in shell scripting?

• Redirects both stdout and stderr to a file

• Runs a command in the background

• Combines two files into one

• Terminates a running process

When does the && (AND) command execute the command following it?

• Only if the preceding command fails.

• Only if the preceding command succeeds.

• Regardless of the success or failure of the preceding command.

• Only if the file specified in the command exists.

What is the primary purpose of exit codes in shell scripting?

• To redirect output and errors to different files.

• To indicate success or failure of a command.

• To connect the output of one command to another.

• To iterate over a sequence of numbers.

Which numeric value typically signifies success in exit codes?

• 0

• 1

• 255

• -1

What are shell built-in commands?

• Commands stored in a separate file.

• Commands that execute in the background.

• Commands that are part of the shell itself.

• Commands for input redirection.

What is the purpose of the read command in shell scripting?

• To redirect input from a file to a command.

• To execute commands from a file in the current shell environment.

• To print text or variables to the standard output.

• To read input from the user or from a file.