Challenge 04 - File contents

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Description

In this challenge let’s learn about file content manipulation and discover how to count file lines, display specific lines from a file, and more.

• Display the first 10 lines of /etc/resolv.conf
• Display the last 5 lines of /etc/crontab

• Create a file named count.log with this content:

  One
  Two
  Three
  Four
  Five

• Use cp to make a backup of this file to count.bkp
• Use cat to make a backup of this file, saving as cat-count.log
• Display the content of cat-count.log, with all lines in reverse order
• Use more to display /etc/selinux/semanage.conf
• Use ls to find the biggest file in /var/log

Success Criteria

1. Show the content of the first 10 lines of /etc/resolv.conf
2. Show the last 5 lines of /etc/crontab
3. Validate if the content of the file count.log was created as expected
4. Check if the file count.bkp was created
5. Check if the file cat-count.log was created
6. Confirm if you can see the content of the file cat-count.log in reverse order
7. Validate if you was able to see the content of the file /etc/selinux/semanage.conf paged
8. Check if you can see the biggest file in /var/log at the top of the list

Learning Resources

• The Shell