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Full Discussion: Output mean and standard deviation of a row
Top Forums Shell Programming and Scripting Output mean and standard deviation of a row Post 302785799 by Yoda on Tuesday 26th of March 2013 11:41:56 AM
Old 03-26-2013
Code:
awk ' BEGIN {
        N = 3
} {
        for ( i = 1; i <= NF; i++ )
        {
                rec[NR] = $0
                sum[NR] += $i
                sumsq[NR] += $i * $i
        }
} END {
        for ( i = 1; i <= NR; i++ )
                print rec[i]" "sum[i]/N" "sqrt(sumsq[i]/N - (sum[i]/N)**2)
} ' file

 

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LEARN ABOUT CENTOS

igawk

IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME

       igawk - gawk with include files

SYNOPSIS

       igawk [ all gawk options ] -f program-file [ -- ] file ...
       igawk [ all gawk options ] [ -- ] program-text file ...

DESCRIPTION

       Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).

       AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like

	      @include getopt.awk

       in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.

OPTIONS

       See gawk(1) for a full description of the AWK language and the options that gawk supports.

EXAMPLES

       cat << EOF > test.awk
       @include getopt.awk

       BEGIN {
	    while (getopt(ARGC, ARGV, "am:q") != -1)
		 ...
       }
       EOF

       igawk -f test.awk

SEE ALSO

       gawk(1)

       Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.

AUTHOR

       Arnold Robbins (arnold@skeeve.com).

Free Software Foundation					    Nov 3 1999								  IGAWK(1)
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