.TH TRUE 1 .SH NAME true, false \- exit with the value true or false .SH SYNOPSIS \fBtrue\fR .br \fBfalse\fR .SH EXAMPLES .ta +20n .ft B .nf while true \fR# List the directory until DEL is hit\fP do ls \-l done .fi .ft P .SH DESCRIPTION These commands return the value .I true or .I false . They are used for shell programming. .SH "SEE ALSO" .BR sh (1).