True and false (commands) True and false (commands) In Unix-like operating systems, codice_1 and codice_2 are commands whose only function is to always return with a predetermined exit status. Programmers and scripts often use the exit status of a command to assess success (exit status zero) or failure (non-zero) of the command. The codice_1 and codice_2 commands represent the logical values of command success, because "true" returns 0, and "false" returns 1. The commands are usually employed in conditional statements and loops of shell scripts. For example, the following shell script repeats the "echo hello" loop until interrupted: while true do done The commands
Campbell's Soup Cans Campbell's Soup Cans Campbell's Soup Cans, which is sometimes referred to as 32 Campbell's Soup Cans, is a work of art produced in 1962 by Andy Warhol. It consists of thirty-two canvases, each measuring in height × in width and each consisting of a painting of a Campbell's Soup can—one of each of the canned soup varieties the company offered at the time. The individual paintings were produced by a printmaking method—the semi-mechanized screen printing process, using a non-painterly style. "Campbell's Soup Cans"' reliance on themes from popular culture helped to usher in pop art as a major art movement