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Full Discussion: Question about IO redirection
Top Forums Shell Programming and Scripting Question about IO redirection Post 302479091 by Scrutinizer on Thursday 9th of December 2010 08:14:07 PM
Old 12-09-2010
The process is not part of the LHS. These operators are used to open/close files. If for instance I do this:
Code:
cat < infile

it is implicit notation for this:
Code:
cat 0< infile

So in fact the left hand side is Standard Input ( File Descriptor 0) ( Likewise > is implicit notation for 1> ).

But I could have written it like this:
Code:
0< infile cat

or
Code:
< infile cat

Note that the orientation of the redirection operator remains unchanged, as the direction to the left denotes reading.
This User Gave Thanks to Scrutinizer For This Post:
michaelrozar17
 

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LEARN ABOUT DEBIAN

sgesc2

sgesc2.f(3)							      LAPACK							       sgesc2.f(3)

NAME

       sgesc2.f -

SYNOPSIS

   Functions/Subroutines
       subroutine sgesc2 (N, A, LDA, RHS, IPIV, JPIV, SCALE)
	   SGESC2

Function/Subroutine Documentation
   subroutine sgesc2 (integerN, real, dimension( lda, * )A, integerLDA, real, dimension( * )RHS, integer, dimension( * )IPIV, integer, dimension(
       * )JPIV, realSCALE)
       SGESC2

       Purpose:

	    SGESC2 solves a system of linear equations

		      A * X = scale* RHS

	    with a general N-by-N matrix A using the LU factorization with
	    complete pivoting computed by SGETC2.

       Parameters:
	   N

		     N is INTEGER
		     The order of the matrix A.

	   A

		     A is REAL array, dimension (LDA,N)
		     On entry, the  LU part of the factorization of the n-by-n
		     matrix A computed by SGETC2:  A = P * L * U * Q

	   LDA

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

	   RHS

		     RHS is REAL array, dimension (N).
		     On entry, the right hand side vector b.
		     On exit, the solution vector X.

	   IPIV

		     IPIV is INTEGER array, dimension (N).
		     The pivot indices; for 1 <= i <= N, row i of the
		     matrix has been interchanged with row IPIV(i).

	   JPIV

		     JPIV is INTEGER array, dimension (N).
		     The pivot indices; for 1 <= j <= N, column j of the
		     matrix has been interchanged with column JPIV(j).

	   SCALE

		     SCALE is REAL
		      On exit, SCALE contains the scale factor. SCALE is chosen
		      0 <= SCALE <= 1 to prevent owerflow in the solution.

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   November 2011

       Contributors:
	   Bo Kagstrom and Peter Poromaa, Department of Computing Science, Umea University, S-901 87 Umea, Sweden.

       Definition at line 115 of file sgesc2.f.

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

Version 3.4.1							  Sun May 26 2013						       sgesc2.f(3)
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