Practice: File Contents

Display the first 12 lines of /etc/services

Display the last line of /etc/passwd

Use cat to create a file named count.txt that looks like this:

One
Two
Three
Four
Five

Use cp to make a backup of this file to cnt.txt

Use cat to make a backup of this file to catcnt.txt

Display catcnt.txt, but with all lines in reverse order (the last line first).

Use more to display /etc/services

Display the readable character strings from the /usr/bin/passwd command

Use ls to find the biggest file in /etc

Open two terminal windows (or tabs) and make sure you are in the same directory in both. Type echo this is the first line > tailing.txt in the first terminal, then issue tail -f tailing.txt in the second terminal. Now go back to the first terminal and type echo This is another line >> tailing.txt (note the double >>), verify that the tail -f in the second terminal shows both lines. Stop the tail -f with Ctrl-C

Use cat to create a file named tailing.txt that contains the contents of tailing.txt followed by the contents of /etc/passwd

Use cat to create a file named tailing.txt that contains the contents of tailing.txt preceded by the contents of /etc/passwd