Capture Everything

Linux lab Beginner 6 tasks 10 points

The ship's computer needs some records. Save output into files with >, >> and 2>. Create every file in your home directory.

How it works: the terminal below is a real Linux machine running in your browser. Click it and type. Tasks tick themselves off as you complete them; questions are answered in the box under each task. Press Reset any time for a fresh machine. Your password on this machine (for sudo) is student.

Getting your Linux machine ready…

The first start downloads about 20 MB. After that your browser keeps it, and labs start in a moment.

Hints

Check a file at any time with cat.

Solution explanation

> creates etc.txt and >> adds a line to it. 2> catches only the error message, while > both.txt 2>&1 sends the output to the file and the errors after it. 2>/dev/null throws the Permission denied messages away.

Show solution

ls /etc > etc.txt
echo "END OF LIST" >> etc.txt
wc -l etc.txt
ls /etc/hostname /etc/treasure 2> errors.txt
ls /etc/hostname /etc/treasure > both.txt 2>&1
find /etc /root -name 'host*' 2>/dev/null