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Full Discussion: find if a position is between a given start and end position
Top Forums UNIX for Dummies Questions & Answers find if a position is between a given start and end position Post 302264590 by joeyg on Thursday 4th of December 2008 09:17:26 AM
Old 12-04-2008
Tools
Well, pretty obvious that you are going to need to read through each file at least once; but there is the issue - to only have to read through each file once.

My thought would be to do something like the following (in loose coding)
Notes:
In the first pass, since you said each range was 36, I just wrote to do all thirty-six manually. I suppose you could augment and have it loop through from the first parameter $1 to the second parameter $2
In the second pass, I check to see if the second parameter has its array value been already set. If not, then I print the two parameters of the second file.

Code:
awk {
  FILENAME=file1
  valid[$1]=1
  valid[$1+1]=1
  ...
  valid[$1+35]=1

  FILENAME=file2
  if valid[$2]!=1
    then
       print $1 $2
  fi
} file1 file2

 

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LEARN ABOUT SUSE

xzcmp

XZDIFF(1)							     XZ Utils								 XZDIFF(1)

NAME

       xzcmp, xzdiff, lzcmp, lzdiff - compare compressed files

SYNOPSIS

       xzcmp [cmp_options] file1 [file2]
       xzdiff [diff_options] file1 [file2]
       lzcmp [cmp_options] file1 [file2]
       lzdiff [diff_options] file1 [file2]

DESCRIPTION

       xzcmp  and  xdiff invoke cmp(1) or diff(1) on files compressed with xz(1), lzma(1), gzip(1), or bzip2(1).  All options specified are passed
       directly to cmp or diff.  If only one file is specified, then the files compared are file1 (which must have a suffix of	a  supported  com-
       pression  format)  and  file1 from which the compression format suffix has been stripped.  If two files are specified, then they are uncom-
       pressed if necessary and fed to cmp(1) or diff(1).  The exit status from cmp or diff is preserved.

       The names lzcmp and lzdiff are provided for backward compatibility with LZMA Utils.

SEE ALSO

       cmp(1), diff(1), xz(1), gzip(1), bzip2(1), zdiff(1)

BUGS

       Messages from the cmp(1) or diff(1) programs refer to temporary filenames instead of those specified.

Tukaani 							    2009-07-05								 XZDIFF(1)
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