Wrap input lines to fit a specified width.
The fold command is used to control the screen width occupied by file content when it is output. It reads content from the specified files and breaks any lines longer than the specified width, sending the result to standard output. If no files are specified, or if the filename is "-", fold reads from standard input.
fold (options) (parameters)
-b, --bytes: Count width by bytes instead of columns.
-s, --spaces: Break lines at spaces if possible.
-w <width>, --width=<width>: Set the maximum line width (default is 80).
File: Specifies the file whose content is to be displayed.
fold -w 5 filename