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Full Discussion: Help for record (2 dimensional array.)
Top Forums Shell Programming and Scripting Help for record (2 dimensional array.) Post 302110570 by cfajohnson on Tuesday 13th of March 2007 08:10:00 PM
Old 03-13-2007
Quote:
Originally Posted by murtaza
I am going to develop a address book using the shell scripting commands without sed, awk, .... I am thinking to apply the concept of 2 dimenstional array. Can I create a two dimensional array for the insertion/updation/deletion of record in unix. If yes then tell me plz or recommend me some material. If any other solution then also tell me.
Most shells do not have arrays, and those that do, have only one-dimensional arrays.

You can simulate 2-dimensional arrays using eval.

Code:
setv() {
    setv_var=$1
    eval "$setv_var=\$2"
}

_getv() {
    eval "_GETV=\$$1"
    case $# in
        2) eval "$2=\$_GETV" ;;
    esac
}

getv() {
    eval echo "\$$1"
}

Sample run:
Code:
$ setv q_1_2 "Something here"
$ getv q_1_2
Something here

 

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LEARN ABOUT CENTOS

dlacpy.f

dlacpy.f(3)							      LAPACK							       dlacpy.f(3)

NAME

       dlacpy.f -

SYNOPSIS

   Functions/Subroutines
       subroutine dlacpy (UPLO, M, N, A, LDA, B, LDB)
	   DLACPY copies all or part of one two-dimensional array to another.

Function/Subroutine Documentation
   subroutine dlacpy (characterUPLO, integerM, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( ldb, *
       )B, integerLDB)
       DLACPY copies all or part of one two-dimensional array to another.

       Purpose:

	    DLACPY copies all or part of a two-dimensional matrix A to another
	    matrix B.

       Parameters:
	   UPLO

		     UPLO is CHARACTER*1
		     Specifies the part of the matrix A to be copied to B.
		     = 'U':	 Upper triangular part
		     = 'L':	 Lower triangular part
		     Otherwise:  All of the matrix A

	   M

		     M is INTEGER
		     The number of rows of the matrix A.  M >= 0.

	   N

		     N is INTEGER
		     The number of columns of the matrix A.  N >= 0.

	   A

		     A is DOUBLE PRECISION array, dimension (LDA,N)
		     The m by n matrix A.  If UPLO = 'U', only the upper triangle
		     or trapezoid is accessed; if UPLO = 'L', only the lower
		     triangle or trapezoid is accessed.

	   LDA

		     LDA is INTEGER
		     The leading dimension of the array A.  LDA >= max(1,M).

	   B

		     B is DOUBLE PRECISION array, dimension (LDB,N)
		     On exit, B = A in the locations specified by UPLO.

	   LDB

		     LDB is INTEGER
		     The leading dimension of the array B.  LDB >= max(1,M).

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   September 2012

       Definition at line 104 of file dlacpy.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2							  Tue Sep 25 2012						       dlacpy.f(3)
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