.TH not "" "" "/rdb Command"
.PC "Logical not, to reverse return status of command"
\fBnot \fIcommand ...\fR
.PP
.II "return value^invert"
.II "logical NOT"
The command
.B not
converts a return status of zero to 255, and any nonzero
return status to zero.
Thus, true becomes false and vice versa.
This is used to test a command for not true or false.
.SH Example
This example shows how
.B not
reverses the return code of the COHERENT command
.BR true :
.DM
	true ; echo $?
.DE
.PP
This command returns zero.
On the other hand, the command
.DM
	not true ; echo $?
.DE
.PP
returns 255.
.SH "See Also"
COHERENT Lexicon:
.B
false,
true
.R
.SO not