True and false (commands) Bash: 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
Campbell's Soup Cans Warhol drastically simplified the gold medallion that appears on Campbell's Soup cans by replacing the paired allegorical figures with a flat yellow disk. In most variations, the only hint of three-dimensionality came from the shading on the tin lid. Otherwise the image was flat. The works with torn labels are perceived as metaphors of life in the sense that even packaged food must meet its end. They are often described as expressionistic. By 1970, Warhol established the record auction price for a painting by a living American artist with a $60,000 sale of "Big Campbell's Soup Can with Torn Label