chapter1/

Dup1 prints the text of each line that appears more than once in the standard input, preceded by its count.

Dup2 prints the count and text of lines that appear more than once in the input.

Dup3 prints the count and text of lines that appear more than once in the named input files.

Echo1 prints its command-line arguments.

Echo2 prints its command-line arguments.

Echo3 prints its command-line arguments.

Fetch prints the content found at each specified URL.

Fetchall fetches URLs in parallel and reports their times and sizes.

Helloworld is our first Go program.