Print specific lines of a repeated set of data Post: 302607171

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Top Forums Shell Programming and Scripting Print specific lines of a repeated set of data Post 302607171 by morrbie on Tuesday 13th of March 2012 10:01:01 PM

03-13-2012

morrbie

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Print specific lines of a repeated set of data

I have a file that needs 1st line, 2nd line, and 26th line printed from every chunk of data. Each chunk of data contains 26 lines (#line+%line+24 data lines = 26 lines of data repeated).

Input file:

# This is a data file used for blockA (chunk 1).
% 10576 A 10 0 1
04 (data1)
03 (data2)
F2 (data3)
8B (data4)
.... (data xyz)
CF (data 24)
# This is a data file used for blockA (chunk 2).
% 10576 B 20 1 2
FF
FE
FD
FC
..
AA
# This is a data file used for blockA (chunk 3).
% 10576 C 30 2 3
11
22
33
44
..
7F

Output file should look like this, where lines 1, lines 2, and lines 26 of a chuck of data have been printed to a file:

# This is a data file used for blockA.
% 10576 A 10 0 1
CF
# This is a data file used for blockA.
% 10576 B 20 1 2
AA
# This is a data file used for blockA.
% 10576 C 30 2 3
7F

---------
I tried using sed -n -e '1,2p;26p' inputfile.txt but that only prints the 1st, 2nd, and 26th line of chunk1. It doesn't output the data every chunk.

I also tried sed -n '0~26p' inputfile.txt, but that only prints the 26th line of every chunk.

Thanks for your help

morrbie

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LEARN ABOUT DEBIAN

set_color

set_color(1)							       fish							      set_color(1)

NAME

       set_color - set_color - set the terminal color

set_color - set the terminal color
   Synopsis
       set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR]

   Description
       Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple,
       cyan, white and normal.

       o -b, --background Set the background color

       o -c, --print-colors Prints a list of all valid color names

       o -h, --help Display help message and exit

       o -o, --bold Set bold or extra bright mode

       o -u, --underline Set underlined mode

       o -v, --version Display version and exit

       Calling set_color normal will set the terminal color to whatever is the default color of the terminal.

       Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey
       font color, while set_color --bold white will result in a white font color.

       Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator.

       set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and
       incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of
       ncurses and recompile fish against it in order to fix this issue.

Version 1.23.1							  Sun Jan 8 2012						      set_color(1)

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