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Top Forums Shell Programming and Scripting sum of a column and selecting lines with value above threshold Post 302577060 by f_o_555 on Monday 28th of November 2011 06:00:51 AM
Old 11-28-2011
sum of a column and selecting lines with value above threshold

Hi again,
I need to further process the results of a previous manipulation.
I have a file with three columns
e.g.
Code:
AAA5 0.00175 1.97996e-06
AAA5 0.01334 2.14159e-05
AAA5 0.01340 4.12155e-05
AAA5 0.01496 1.10312e-05
AAA5 0.51401 0.0175308
BB0 0.00204 2.8825e-07
BB0 0.01569 7.94746e-07
BB0 0.01578 1.51949e-06
BB0 0.01766 3.91196e-07
BB0 2.18630 3.60312e-10
BB1 1.20490 6.06204e-09
CCC5 0.00226 5.31546e-10

What I would like to do is to sum the total of the 3rd column.
then, select (print) only those line whose ratio 3rd column/total is bigger than a certain value (stored in a variable).

I tried awk, but I still don't get the way it works.

Thanks in advance,
 

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fmt(1)							      General Commands Manual							    fmt(1)

NAME
fmt - format text SYNOPSIS
width] [file...] DESCRIPTION
The command is a simple text formatter that fills and joins lines to produce output lines of (up to) the number of characters specified in the width option. The default width is 72. concatenates the arguments. If none are given, formats text from the standard input. Blank lines are preserved in the output, as is the spacing between words. does not fill lines beginning with a period for compatibility with Nor does it fill lines starting with Indentation is preserved in the output and input lines with differing indentation are not joined (unless is used). can also be used as an in-line text filter for the command: reformats the text between the cursor location and the end of the paragraph. Options recognizes the following options: Crown margin mode. Preserve the indentation of the first two lines within a paragraph and align the left margin of each subsequent line with that of the second line. This is useful for tagged paragraphs. Split lines only. Do not join short lines to form longer ones. This prevents sample lines of code, and other such "formatted" text, from being unduly combined. Fill output lines to up to width columns. WARNINGS
The width option is acceptable for BSD compatibility, but it may go away in future releases. SEE ALSO
nroff(1), vi(1). fmt(1)
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