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Full Discussion: BASH. Need to extract some numbers and take the average
Top Forums Shell Programming and Scripting BASH. Need to extract some numbers and take the average Post 302367190 by slackjack on Sunday 1st of November 2009 09:15:47 PM
Old 11-01-2009
BASH. Need to extract some numbers and take the average
Hey all,

I ran some simulations, of which the output is 100s of files. I've used grep to extract the vital information needed from the files. This has made my task somewhat easier. But I still need to perform some mathematical calculations (average and geometrical average) on the results of the grep command (which is saved to a txt file).

The general format of the output of grep is (just a crude example):
Code:
a-4.txt number of eggs used is ## in #  cartons
b-4.txt number of eggs used is ## in #  cartons
b-6.txt number of eggs used is ## in #  cartons
a-6.txt number of eggs used is ## in #  cartons
a-8.txt number of eggs used is ## in #  cartons
b-8.txt number of eggs used is ## in #  cartons
a-10.txt number of eggs used is ## in #  cartons
b-10.txt number of eggs used is ## in #  cartons

My aim here is to get the average number of cartons (#) needed to pack ## number of eggs. Here I want to average all the a-4, a-6, a-8, and a-10 and then all the b-4, b-6, b-8, and b-10 cartons. SO my end result is to have an average number of cartons for both a and b. As you can imagine doing this by hand with results that can go up to 100 is very time consuming. Can someone please assist me with a BASH script that can make my job simpler?

Thank you.
 

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LEARN ABOUT DEBIAN

ogmdemux

OGMDEMUX(1)							   User Commands						       OGMDEMUX(1)

NAME

       ogmdemux - Extract streams from OGG/OGM files into separate files

SYNOPSIS

       ogmdemux [options] inname

DESCRIPTION

       This program extracts all or only some streams from an OGM and writes them to separate files.

       inname Use 'inname' as the source.

       -o, --output out
	      Use  'out'  as  the  base  for  destination  file  names.  '-v1', '-v2', '-a1', '-t1'... will be appended to this name. Default: use
	      'inname'.

       -a, --astream n
	      Extract specified audio stream. Can be used more than once. Default: extract all streams.

       -d, --vstream n
	      Extract specified video stream. Can be used more than once. Default: extract all streams.

       -t, --tstream n
	      Extract specified text stream. Can be used more than once. Default: extract all streams.

       -na, --noaudio
	      Don't extract any audio streams.

       -nv, --novideo
	      Don't extract any video streams.

       -nt, --notext
	      Don't extract any text streams.  Default: extract all streams.

       -r, --raw
	      Extract the raw streams only.  Default: extract to useful formats (AVI, WAV, OGG, SRT...).

       -v, --verbose
	      Increase verbosity.

       -h, --help
	      Show this help.

       -V, --version
	      Show version number.

NOTES

       What works:

       *      Extraction of the following formats is fully supported including writing the stream contents to useful container formats:
		video  -> AVI
		Vorbis -> OGG/Vorbis
		PCM    -> WAV
		text   -> text files (SRT subtitle format)

       *      All other audio streams (MP3, AC3) are just copied 1:1 into output files. MP3 and AC3 files should be usable. Others might not.

       What not works:

       *      Headers created by older OggDS (DirectShow) filter versions are not supported (and probably never will be).

AUTHOR

       ogmdemux was written by Moritz Bunkus <moritz@bunkus.org>.

SEE ALSO

       ogmmerge(1), ogmsplit(1), ogminfo(1), ogmcat(1), dvdxchap(1)

WWW

       The newest version can always be found at <http://www.bunkus.org/videotools/ogmtools/> <http://www.bunkus.org/videotools/ogmtools/>

ogmdemux v1.5							   November 2004						       OGMDEMUX(1)
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