Lab 3 Quiz

What does the command ls > capture.txt do?

• Lists files on the terminal

• Saves the list of files in capture.txt

• Displays an error message in capture.txt

• Combines output with stderr

In the command ./error.sh 1> capture.txt 2> error.txt, what is the purpose of 1>?

• Redirects both stdout and stderr

• Redirects standard output to capture.txt

• Displays output in the terminal

• Ignores standard output

What is the result of running ./error.sh > /dev/null 2> /dev/null?

• Only stdout is shown on the terminal

• Both stdout and stderr are discarded

• Only stderr is redirected to the terminal

• The script fails silently

How do you redirect the output of ls to a file named capture.txt?

• ls >> capture.txt

• ls = capture.txt

• ls > capture.txt

• ls | capture.txt

What does chmod +x error.sh do?

• Changes file ownership

• Adds read permissions

• Makes the file executable

• Deletes the file

What happens when you run ./error.sh > capture.txt?

• The script runs without output

• The output goes to capture.txt

• The script fails to run

• The terminal shows an error

What is the purpose of 2> in the command ./error.sh 2> capture.txt?

• Redirects stdout

• Redirects stderr

• Displays output on the screen

• None of the above

What will ./error.sh > capture.txt 2>&1 achieve?

• Redirects stdout only

• Redirects stderr only

• Combines both stdout and stderr into capture.txt

• Displays errors on the screen

What does the command ./input.sh < dummy.txt do?

• Runs input.sh with no input

• Feeds dummy.txt as input to input.sh

• Creates dummy.txt

• Lists contents of dummy.txt

What does the -r option in the grep command do?

• Limits the search to a specific file

• Searches recursively in directories

• Counts the number of matches

• Displays line numbers of matches