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Top Forums Shell Programming and Scripting awk second largest, third largest value Post 302555087 by theawknewbie on Tuesday 13th of September 2011 09:19:18 PM
Old 09-13-2011
Thanks for that last reply! That really did it for 2nd max, but what can I do for a 3rd largest max with the same "max - $2>5" idea??
It's sort of like this (continued)

Code:
133 800 
         133 799 
133 798 
133 403 
133 402 
133 401
133 127
133 126
133 125

pseudocode: select real max;print $0;exit && select second max; print$0;exit && select thirdmax;print$0 exit >> newfile.txt

eventually to obtain: cat newfile.txt
Code:
133 800
133 403
133 127

I'm stuck here because the next function seems built in here to find a second max, can I store the second max in a variable and tell it to 'next' that record to find the 3rd maximum? Any tips would be well appreciated. Thanks!

Last edited by theawknewbie; 09-13-2011 at 10:27 PM..
 

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FILECHAN(8)						      System Manager's Manual						       FILECHAN(8)

NAME
filechan - file-writing backend for InterNetNews SYNOPSIS
filechan [ -d directory ] [ -f num_fields ] [ -m mapfile ] [ -p pidfile ] DESCRIPTION
Filechan reads lines from standard input and copies certain fields in each line into files named by other fields within the line. Filechan is intended to be called by innd(8) as a channel feed. (It is not a full exploder and does not accept commands; see newsfeeds(5) for a description of the difference, and buffchan(8) for an exploder program.) Filechan input is interpreted as a sequence of lines. Each line contains a fixed number of initial fields, followed by a variable number of filename fields. All fields in a line are separated by whitespace. The default number of initial fields is one. For each line of input, filechan writes the initial fields, separated by whitespace and followed by a newline, to each of the files named in the filename fields. When writing to a file, filechan opens it in append mode and tries to lock it and change the ownership to the user and group who owns the directory where the file is being written. Because the time window in which a file is open is very small, complicated flushing and locking protocols are not needed; a mv(1) followed by a sleep(1) for a couple of seconds is sufficient. OPTIONS
-f num_fields The ``-f'' flag may be used to specify a different number of initial fields. -d directory By default, filechan writes its output into the directory <pathoutgoing in inn.conf>. The ``-d'' flag may be used to specify a directory the program should change to before starting. -p pidfile If the ``-p'' flag is used, the program will write a line containing its process ID (in text) to the specified file. -m mapfile A map file may be specified by using the ``-m'' flag. Blank lines and lines starting with a number sign (``#'') are ignored. All other lines should have two host names separated by a colon. The first field is the name that may appear in the input stream; the second field names the file to be used when the name in the first field appears. For example, the following map file may be used to map the short names used in the example below to the full domain names: # This is a comment uunet:news.uu.net foo:foo.com munnari:munnari.oz.au EXAMPLES
If filechan is invoked with ``-f 2'' and given the following input: news/software/b/132 <1643@munnari.oz.au> foo uunet news/software/b/133 <102060@litchi.foo.com> uunet munnari comp/sources/unix/2002 <999@news.foo.com> foo uunet munnari Then the file foo will have these lines: news/software/b/132 <1643@munnari.oz.au> comp/sources/unix/2002 <999@news.foo.com> the file munnari will have these lines: news/software/b/133 <102060@litchi.foo.com> comp/sources/unix/2002 <999@news.foo.com> and the file uunet will have these lines: news/software/b/132 <1643@munnari.oz.au> news/software/b/133 <102060@litchi.foo.com> comp/sources/unix/2002 <999@news.foo.com> HISTORY
Written by Robert Elz <kre@munnari.oz.au>, flags added by Rich $alz <rsalz@uunet.uu.net>. This is revision 5909, dated 2002-12-03. SEE ALSO
buffchan(8), inn.conf(5), innd(8), newsfeeds(5). FILECHAN(8)
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