Wrap each line in an input file to fit a specified width and print it to `stdout`.
Wrap each line to default width (80 characters)
fold path/to/file
Wrap each line to width "30"
fold -w30 path/to/file
Wrap each line to width "5" and break the line at spaces (puts each space separated word in a new line, words with length > 5 are wrapped)
fold -w5 -s path/to/file