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Top Forums Shell Programming and Scripting Read n lines from a text files getting n from within the text file Post 302852993 by Don Cragun on Thursday 12th of September 2013 11:56:43 PM
Old 09-13-2013
Quote:
Originally Posted by Chubler_XL
Good points Don Cragun, my assumption was that the value in the data line was less than then number of lines and any additional lines need to be discarded.

In my solution, any processing could be done in the NR <=R block:

Code:
awk -F: '/#data/ { R=NR+$2} NR<=R { "Any processing code here"; print }' infile

Understood.

The O.P. said the output "can be directed to a gnuplot ot (sic) output to a file.", but didn't specify any options for gnuplot and didn't specify filenames nor whether the headers should be included in the files or stripped from the files. There is no gnuplot man page in the Man Pages section of this forum, but some references I found said that it is very picky about having its input in tab separated fields (and the data lines given in the sample input have no tabs). Should all data be sent to one instantiation of gnuplot or should the data under each header be sent to a different instantiation of gnuplot?

I don't think I can do much more until we get a clarification on the requirements.
 

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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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