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Top Forums Shell Programming and Scripting Syntax error: word unexpected (expecting ")") Post 302294515 by cfajohnson on Thursday 5th of March 2009 10:53:08 AM
Old 03-05-2009
Quote:
Originally Posted by jim mcnamara
try this
Code:
#bash:
declare -a lyrics=$( <  _open.txt )
#ksh
set -A lyrics=$( <  _open.txt )


Neither declaration is necessary. In either bash or ksh93, simply assigning it is enough:

Code:
lyrics=( $( tr '\n' ' ' <  _open.txt ) )

Note that you do not need tr; the shell will split the array on the characters in $IFS, which normally includes a space. So this is the same as the above:

Code:
lyrics=( $( <  _open.txt ) )

Quote:
If you are using bash or ksh this will work. ksh limits the number of elements in an array to 1023. So _open.txt has to have less than 1024 "words" in it.

Ksh88 was limited to 1023 elements, but I don't think it accepted that syntax for assigning a number of elements to an array.

Ksh used to be limited to 4096 elements in an array, but versions for the last few years have, like bash, been limited only by available memory.
 

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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 vari- ables and they are recursively evaluated as arithmetic expressions to get numerical values. let has been made obsolete by the ((...)) syn- tax 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 TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
ksh(1), ksh93(1), set(1), typeset(1), attributes(5) SunOS 5.11 2 Nov 2007 let(1)
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