The Pico (Pine composer) is a text editor for the Unix and Unix-based computer systems. This has been designed by the Office of the Computing and Communications at the University of Washington and combined with the Pine e-mail client.
The Pine’s message composition editor is also available as a separate stand-alone program, called PICO. The PICO is a very simple and easy-to-use text editor that offers the paragraph justification, cut/paste, and a spelling checker.
Syntax: pico filename.extension
Command: pico demofile.txt
Pico cannot copy text from one file to another and also does not support working with several files simultaneously. It cannot perform find and replace across multiple files but can support search and replace operations.