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Shell Programming and Scripting
How to read n number of lines from a file
Post 302395800 by panyam on Wednesday 17th of February 2010 04:14:13 AM
02-17-2010
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hi,
I am a begginer in unix and i want to know how to open a file and read it and separate the numbers & words and storing it in separate files, Using shell scripting.
Please help me out for this.
Regards
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Hi All,
I want to read one number from the file.
Only one number will be there in the file.
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Is it possible?
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Hi all,
I have a file sample.txt
abc
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Raffenetti 2 integral format.
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LEARN ABOUT REDHAT
dlaqge
DLAQGE(l) ) DLAQGE(l) NAME
DLAQGE - equilibrate a general M by N matrix A using the row and scaling factors in the vectors R and C SYNOPSIS
SUBROUTINE DLAQGE( M, N, A, LDA, R, C, ROWCND, COLCND, AMAX, EQUED ) CHARACTER EQUED INTEGER LDA, M, N DOUBLE PRECISION AMAX, COLCND, ROWCND DOUBLE PRECISION A( LDA, * ), C( * ), R( * ) PURPOSE
DLAQGE equilibrates a general M by N matrix A using the row and scaling factors in the vectors R and C. ARGUMENTS
M (input) INTEGER The number of rows of the matrix A. M >= 0. N (input) INTEGER The number of columns of the matrix A. N >= 0. A (input/output) DOUBLE PRECISION array, dimension (LDA,N) On entry, the M by N matrix A. On exit, the equilibrated matrix. See EQUED for the form of the equilibrated matrix. LDA (input) INTEGER The leading dimension of the array A. LDA >= max(M,1). R (input) DOUBLE PRECISION array, dimension (M) The row scale factors for A. C (input) DOUBLE PRECISION array, dimension (N) The column scale factors for A. ROWCND (input) DOUBLE PRECISION Ratio of the smallest R(i) to the largest R(i). COLCND (input) DOUBLE PRECISION Ratio of the smallest C(i) to the largest C(i). AMAX (input) DOUBLE PRECISION Absolute value of largest matrix entry. EQUED (output) CHARACTER*1 Specifies the form of equilibration that was done. = 'N': No equilibration = 'R': Row equilibration, i.e., A has been premultiplied by diag(R). = 'C': Column equilibration, i.e., A has been postmulti- plied by diag(C). = 'B': Both row and column equilibration, i.e., A has been replaced by diag(R) * A * diag(C). PARAMETERS
THRESH is a threshold value used to decide if row or column scaling should be done based on the ratio of the row or column scaling factors. If ROWCND < THRESH, row scaling is done, and if COLCND < THRESH, column scaling is done. LARGE and SMALL are threshold values used to decide if row scaling should be done based on the absolute size of the largest matrix element. If AMAX > LARGE or AMAX < SMALL, row scaling is done. LAPACK version 3.0 15 June 2000 DLAQGE(l)