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 which the varieties were introduced by the Campbell Soup Company, beginning with "Tomato" in the upper left, which debuted in 1897. By April 2011, the curators at the MoMA had reordered the varieties, moving "Clam Chowder" to the upper left and "Tomato" to the bottom of the four rows. Several anecdotal stories supposedly explain why Warhol chose Campbell's Soup cans as the focal point of his pop art. One reason is that he needed a new subject after he abandoned comic strips, a move taken in part due to his respect for the refined work of Roy Lichtenstein. According to