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 Although Warhol had produced silkscreens of comic strips and of other pop art subjects, he supposedly relegated himself to soup cans as a subject at the time to avoid competing with the more finished style of comics by Roy Lichtenstein. He once said "I've got to do something that really will have a lot of impact that will be different enough from Lichtenstein and James Rosenquist, that will be very personal, that won't look like I'm doing exactly what they're doing." In February 1962, Lichtenstein displayed at a sold-out exhibition of cartoon pictures at Leo Castelli's eponymous Leo Castelli Gallery,