Knowledge check

For the following exercises, open up your Terminal and try to solve the following tasks:

1. Display the size (in bytes) of the file /etc/hostname.
2. Display only the group names in the file /etc/group.
3. Display the total number of lines in the file /etc/services.
4. Display only the lines that contain the word "bash" in the file /etc/passwd.
5. Display the output of the uptime command in all uppercase letters.