1. 1. Perl Oneliners
2. 2. One-liners
3. 1. 2.1. One-liner: print
   2. 2.2. One-liner: Rename many files
   3. 2.3. One-liner: grep on Windows as well
   4. 2.4. One-liner: Replace a string in many files
   5. 2.5. One-liner: Change encoding
   6. 2.6. One-liner: print the 3rd field of every line in a CSV file
   7. 2.7. One-liner: Print all usernames from /etc/passwd