TRUE(1) General Commands Manual TRUE(1)
true, false - provide truth values
true and false are usually used in a Bourne shell script. They test
for the appropriate status "true" or "false" before running (or failing
to run) a list of commands.
The following Bourne shell script will be executed while the case sta-
tus is "true".
true has exit status 0.
false has exit status 1.
9 September 1987 TRUE(1)