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Full Discussion: Script regarding non numerical or empty value
Top Forums Shell Programming and Scripting Script regarding non numerical or empty value Post 302991650 by ghpradeep on Wednesday 15th of February 2017 05:15:25 AM
Old 02-15-2017
Script regarding non numerical or empty value
Hello Team,

I need bash script to check if my output is non numerical or empty. if its then my output should display default value as 0

basically, I am reading value from txt file. most of numerical value, in case there is no numerical value or its empty, then my output should be 0.

example like below:
Code:
output=`sed '1!d' $SOURCE_FOLDER/$datafile |awk '{print $6}'`
          data="lines1=$output "

          output=`sed '1!d' $SOURCE_FOLDER/$datafile |awk '{print $7}'`
          data+="lines2=$output "

          echo "file value|$date"

Br,Pradeep
Last edited by ghpradeep; 02-15-2017 at 07:32 AM.. Reason: Add CODE and ICODE tags.
 

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LEARN ABOUT DEBIAN

maphimbu

MAPHIMBU(1)							   User Commands						       MAPHIMBU(1)

NAME

       maphimbu -  histogram builder for 1-d numerical and text data

SYNOPSIS

       maphimbu [OPTION]... [FILE]

DESCRIPTION

       This  program produces 1-d histograms from numerical or text data input. It can be also used to estimate the probability distribution func-
       tion of a numerical variable - see http://en.wikipedia.org/wiki/Probability_density_function.

OPTIONS

       -x <int>
	      x-data column (default is 1)

       -y <int>
	      y-data column (default is 2); It is considered only when combined with '-m' or '-S'

       -d <float|int>
	      delta size (dx-resolution) in case of numerical data; Keep in mind that 2 is not the same as 2.0: in the first case the numbers  are
	      treated as integers, in the latter as floats.

       -n     normalize  the  result  A)  non-numerical data: n(x) = counts(x)/sum_of_counts B) numerical data: the normalized probability density
	      func.

	      is P(-INF < x <INF) = Int_[-INF:INF] P(x)*dx = 1 ; For the numerical integration an open x-data interval is assumed.

       -N     normalize data against the total sum of counts (same as option '-n' with case A forced)

       -U     normalize the result with x-range mapped to unit; The x-values are mapped to the interval [0:1], respectively Int_[0:1] P(x)*dx = 1;
	      This option is mutually exclusive with '-n'.

       -S     compute sums and normalized sums of y-values; The total sum of all y-values is used for the normalization.

       -m     compute the arithmetic mean of y-values in the respective x-bar

       -s <int>
	      sort output using the specified column; Header is skipped in this case.

       -g <int>
	      sort output numerically using the specified column; Header is skipped in this case.

       -r     do reverse sorting (in combination with '-g' and '-s')

       -C     center histogram bars (shifts x-axis by 0.5*dx)

       -X     treat hole line as one string (single data record)

       -H     print a data description header

       -V     print program version and exit

       --version
	      output version and copyright information

       --help display help

       -h     display short help (options summary)

       Note: this program is not intended for use in high order numerical computations.

REPORTING BUGS

       Report bugs to <gnu@mirendom.net>

COPYRIGHT

       Copyright (C) 2003-2007, 2009, 2011 Dimitar Ivanov

       License: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

maphimbu 2.8.4							   February 2012						       MAPHIMBU(1)
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