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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 302852953 by malandisa on Thursday 12th of September 2013 08:16:37 PM
Old 09-12-2013
Read n lines from a text files getting n from within the text file

I dont even have a sample script cause I dont know where to start from. My data lookes like this
Code:
> sat#16 #data: 15 site:UNZA baseline:  205.9151
  0.008   -165.2465     35.8109     40.6685     21.9148    121.1446     26.4629    -18.4976     33.8722
  0.017   -165.2243     48.2201     40.6908     21.9058    120.8975     26.4179    -18.4794     33.8951
  0.025   -165.1857     41.5258     40.7293     21.9056    120.6503     26.3729    -18.4611     33.9179
  0.033   -165.1438     33.9471     40.7713     21.9072    120.4031     26.3278    -18.4427     33.9407
  0.042   -165.1106     40.8982     40.8045     21.9039    120.1559     26.2826    -18.4242     33.9635
  0.050   -165.0913     38.5970     40.8238     21.8932    119.9087     26.2375    -18.4056     33.9862
  0.058   -165.0968     43.7509     40.8183     21.8692    119.6616     26.1922    -18.3868     34.0089
  0.067   -165.0654     40.7461     40.8497     21.8649    119.4144     26.1470    -18.3680     34.0316
  0.075   -165.0817     46.2518     40.8334     21.8350    119.1672     26.1016    -18.3490     34.0542
  0.083   -165.0412     40.4513     40.8739     21.8355    118.9200     26.0563    -18.3299     34.0768
  0.092   -165.0533     44.7589     40.8617     21.8078    118.6728     26.0108    -18.3107     34.0994
  0.100   -165.0425     43.8650     40.8726     21.7924    118.4256     25.9653    -18.2913     34.1219
  0.108   -165.0378     39.0059     40.8773     21.7736    118.1784     25.9198    -18.2719     34.1444
  0.117   -165.0049     44.6828     40.9102     21.7699    117.9312     25.8741    -18.2523     34.1668
> sat#19 #data: 6 site:UNZA baseline:  235.0682
 17.900   -171.3423     62.8450     63.7259     26.5775    325.4868     15.0105     -7.3923     22.8404
 17.908   -171.5057     55.5991     63.5625     26.6247    325.4057     15.2054     -7.4669     22.8738
 17.917   -171.7347     53.3075     63.3335     26.6444    325.3236     15.4003     -7.5407     22.9067
 17.925   -172.0204     57.9098     63.0478     26.6402    325.2407     15.5952     -7.6138     22.9393
 17.933   -172.2141     50.7400     62.8541     26.6748    325.1568     15.7902     -7.6860     22.9714
 17.942   -172.4885     48.0680     62.5797     26.6751    325.0720     15.9851     -7.7575     23.0031
> sat# 1 #data: 8 site:UNZA baseline:  225.5519
  0.008   -148.7547     75.6631     76.7972     65.5288     89.3165     56.3463    -15.3538     30.6348
  0.017   -148.7668     73.5426     76.7851     65.5199     89.7731     56.3486    -15.3715     30.6350
  0.025   -148.7836     80.0087     76.7683     65.5057     90.2296     56.3488    -15.3892     30.6352
  0.033   -148.7821     76.5570     76.7698     65.5058     90.6859     56.3469    -15.4069     30.6354
  0.042   -148.7916     78.7440     76.7603     65.4952     91.1420     56.3430    -15.4246     30.6356
  0.050   -148.8006     74.6552     76.7513     65.4836     91.5978     56.3370    -15.4423     30.6359
  0.058   -148.8115     73.8469     76.7404     65.4692     92.0532     56.3289    -15.4600     30.6362
  0.067   -148.8211     75.2542     76.7308     65.4545     92.5083     56.3188    -15.4777     30.6365

and so on. I need the sript to read the first line with text and use the #data value to determine how many lines to read below this text line, then read those lines of data, then read the next line with text and use the #data value to count how namy lines to read below that and so on.

To be honext I have no idea where to start from. And honestly I am not completely new to shell scripting but this has challenged me to the core. This is not an assignment, its for my rresearch work am a seniour lecturer in the department of physics at the university of zambia in lusaka, zambia. I hope it is doable.

The read data can be directed to a gnuplot ot output to a file.

Thank you 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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