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let (1)
  • >> let (1) ( Solaris man: Команды и прикладные программы пользовательского уровня )
  • let (1) ( Linux man: Команды и прикладные программы пользовательского уровня )
  •  

    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.

     

    ATTRIBUTES

    See attributes(5) for descriptions of the following attributes:

    ATTRIBUTE TYPEATTRIBUTE VALUE

    AvailabilitySUNWcsu

     

    SEE ALSO

    ksh(1), ksh93(1), set(1), typeset(1), attributes(5)


     

    Index

    NAME
    SYNOPSIS
    ksh
    ksh93
    DESCRIPTION
    ksh
    ksh93
    EXIT STATUS
    ksh
    ksh93
    ATTRIBUTES
    SEE ALSO


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