LET(1) User Commands LET(1)

NAME

let - shell built-in function to evaluate one or more arithmetic
expressions

SYNOPSIS

ksh
let arg...


ksh93
let [expr...]

DESCRIPTION

ksh
Each arg is a separate arithmetic expression to be evaluated.

ksh93
let evaluates each expr in the current shell environment as an arithmetic
expression using ANSI C syntax. Variables names are shell variables and
they are recursively evaluated as arithmetic expressions to get numerical
values. let has been made obsolete by the ((...)) syntax of ksh93(1)
which does not require quoting of the operators to pass them as command
arguments.

EXIT STATUS

ksh
ksh returns the following exit values:

0
The value of the last expression is non-zero.


1
The value of the last expression is zero.


ksh93
ksh93 returns the following exit values:

0
The last expr evaluates to a non-zero value.


>0
The last expr evaluates to 0 or an error occurred.

SEE ALSO

ksh(1), ksh93(1), set(1), typeset(1), attributes(7)


November 2, 2007 LET(1)