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Top Forums Shell Programming and Scripting Can I assign the contents of file into an array? Post 302112326 by radoulov on Tuesday 27th of March 2007 09:28:08 AM
Old 03-27-2007
Quote:
Originally Posted by murtaza
Thank u for reply. Can u tell me the concept about the set * command?
Positional parameters

Quote:
A positional parameter is a parameter denoted by one or more digits, other than the single digit 0. Positional parameters are assigned from the shell's arguments when it is invoked, and may be reassigned using the set builtin command. Positional parameter N may be referenced as ${N}.
With trace enabled (the -x option) you can see how it works:

Code:
$ set -x
$ set *
+ set a b c

Or, if you insist to use "ls" (with bash, for ksh93 use typeset -A):

Code:
$ a=($(ls))
$ echo ${a[0]}
a
$ echo ${a[1]}
b
$ echo ${a[@]}
a b c
$ echo ${#a[@]}
3

 

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ECHO(1) 						    BSD General Commands Manual 						   ECHO(1)

NAME
echo -- write arguments to the standard output SYNOPSIS
echo [-n] [string ...] DESCRIPTION
The echo utility writes any specified operands, separated by single blank (' ') characters and followed by a newline (' ') character, to the standard output. The following option is available: -n Do not print the trailing newline character. This may also be achieved by appending 'c' to the end of the string, as is done by iBCS2 compatible systems. Note that this option as well as the effect of 'c' are implementation-defined in IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002. Applications aiming for maximum portability are strongly encouraged to use printf(1) to sup- press the newline character. Some shells may provide a builtin echo command which is similar or identical to this utility. Most notably, the builtin echo in sh(1) does not accept the -n option. Consult the builtin(1) manual page. EXIT STATUS
The echo utility exits 0 on success, and >0 if an error occurs. SEE ALSO
builtin(1), csh(1), printf(1), sh(1) STANDARDS
The echo utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002. BSD
April 12, 2003 BSD
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