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Shell Programming and Scripting
awk second largest, third largest value
Post 302555163 by sk1418 on Wednesday 14th of September 2011 04:37:35 AM
09-14-2011
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Hi,
1)I have XX directory and have lot of files ,I want to find largest file in that
directory
2)how calculate the size of file in MB.
Thanks,
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hi,
i am having a file that looks like this :
myhome111
oper
11
myhome333
oper
19
...
how can i get the largest value from this file ..in this example i am consiering 19 as the largest value.. how can i do that.. as this file is having other numbers also within it like 111, 333... (4 Replies)
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Hi All,
My file is like this:
$ cat max.txt
abcd:1982:a
efghij:1980:e
klmn:1923:k
opqrst:1982:o
I have to find out the largest first field and the corresponding line. i.e
Output required:
efghij efghij:1980:e
opqrst opqrst:1982:o
HTH,
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Hello,
i am on linux 2.6.13-1.1526_FC4smp , and i would be very greatfull
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My directory only contains files..no sub directories..I want to know about the largest file in directory..Largest in terms of size..And what if I want to know about first 3 largest files..
Is it possible to know largest file in terms of its filename?? (4 Replies)
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Hey,
This is a long-shot however, I am stuck with the following problem:
I have the output from ls -la, and I want to sort some of that data out by using AWK to filter it.
ls -la | awk -f scriptname.awk
Input:
For example:
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Input file
US Score 10
UK Ball 20
AS Score 50
AK Ball 10
PZ Ballon 50
PA Score 70
WT Data 10
.
.
Desired output file
UK Ball 20
PZ Ballon 50
PA Score 70
WT Data 10
.
. (1 Reply)
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Hi !
Here is an example of a tab-delimited file with variable width values in field 2 (space separated values).
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I need to calculate the biggest number in array size n.
Example: Users enter: 1 7 4 9
The biggest number is : 9
Simple but I'm really new on this on Shell/Bash! Anything will be helpful! Thanks!
#!/bin/bash
printf "\tEnter a list of numbers, with spaces: "
read -a ARRAY
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LEARN ABOUT DEBIAN
sgeqrt3
sgeqrt3.f(3) LAPACK sgeqrt3.f(3) NAME
sgeqrt3.f - SYNOPSIS
Functions/Subroutines recursive subroutine sgeqrt3 (M, N, A, LDA, T, LDT, INFO) SGEQRT3 Function/Subroutine Documentation recursive subroutine sgeqrt3 (integerM, integerN, real, dimension( lda, * )A, integerLDA, real, dimension( ldt, * )T, integerLDT, integerINFO) SGEQRT3 Purpose: SGEQRT3 recursively computes a QR factorization of a real M-by-N matrix A, using the compact WY representation of Q. Based on the algorithm of Elmroth and Gustavson, IBM J. Res. Develop. Vol 44 No. 4 July 2000. Parameters: M M is INTEGER The number of rows of the matrix A. M >= N. N N is INTEGER The number of columns of the matrix A. N >= 0. A A is REAL array, dimension (LDA,N) On entry, the real M-by-N matrix A. On exit, the elements on and above the diagonal contain the N-by-N upper triangular matrix R; the elements below the diagonal are the columns of V. See below for further details. LDA LDA is INTEGER The leading dimension of the array A. LDA >= max(1,M). T T is REAL array, dimension (LDT,N) The N-by-N upper triangular factor of the block reflector. The elements on and above the diagonal contain the block reflector T; the elements below the diagonal are not used. See below for further details. LDT LDT is INTEGER The leading dimension of the array T. LDT >= max(1,N). INFO INFO is INTEGER = 0: successful exit < 0: if INFO = -i, the i-th argument had an illegal value Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: November 2011 Further Details: The matrix V stores the elementary reflectors H(i) in the i-th column below the diagonal. For example, if M=5 and N=3, the matrix V is V = ( 1 ) ( v1 1 ) ( v1 v2 1 ) ( v1 v2 v3 ) ( v1 v2 v3 ) where the vi's represent the vectors which define H(i), which are returned in the matrix A. The 1's along the diagonal of V are not stored in A. The block reflector H is then given by H = I - V * T * V**T where V**T is the transpose of V. For details of the algorithm, see Elmroth and Gustavson (cited above). Definition at line 133 of file sgeqrt3.f. Author Generated automatically by Doxygen for LAPACK from the source code. Version 3.4.1 Sun May 26 2013 sgeqrt3.f(3)