what does a zip file do? code example

Example 1: what are benefits of zip files

Zip files (. zip or . zipx) are single files, 
 sometimes called "archives", that contain one 
 or more compressed files. 
 Zip files make it easy to keep related files 
 together and make transporting, e-mailing, 
 downloading and storing data and software faster and more efficient.

Example 2: zip file

zip newzipfile.zip file1.txt file2.txt