.TH TRUE 1 .CT 1 shell .SH NAME true, false \- provide truth values .SH SYNOPSIS .B true .PP .B false .SH DESCRIPTION .I True does nothing, successfully. .I False does nothing, unsuccessfully. .SH "SEE ALSO" .IR sh (1) .SH DIAGNOSTICS .I True has exit status zero, .I false nonzero. .SH BUGS For most purposes, .I true is a slow equivalent for the shell builtin command .BR : .