There are couple of ways to fix it:
1) Update link to point to uncompressed version of the text file
2) Update samples to uncompress file after curl downloads it
I think option one is better, because adding new command will no longer match samples in the book, and might confuse readers.
Resource http://www.gutenberg.org/cache/epub/76/pg76.txt is now stored as a compressed file. That breaks samples.
There are couple of ways to fix it: 1) Update link to point to uncompressed version of the text file 2) Update samples to uncompress file after curl downloads it
I think option one is better, because adding new command will no longer match samples in the book, and might confuse readers.