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Full Discussion: Awk- Indexing a list of numbers in file2 to print certain rows in file1
Top Forums Shell Programming and Scripting Awk- Indexing a list of numbers in file2 to print certain rows in file1 Post 303025332 by Chubler_XL on Tuesday 30th of October 2018 11:17:47 PM
Old 10-31-2018
If vgersh99's solution if matching lines are less than 30 lines apart some lines are printed multiple times (overlapping regions).

Try this modification:

Code:
BEGIN {
  if(!ba) ba=2
}
FNR == NR {
   f2[$1];
   next
}
{
  f1all[FNR]=$0
  if ($3 in f2)
     for(i=FNR-ba;i<=FNR+ba;i++) prn[i]
}
END {
  for(i=1;i<=FNR;i++)
     if(i in prn) print f1all[i]
}

Last edited by Chubler_XL; 10-31-2018 at 12:24 AM.. Reason: Fix "out by 1" errors
This User Gave Thanks to Chubler_XL For This Post:
Geneanalyst
 

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LEARN ABOUT HPUX

merge

merge(1)						      General Commands Manual							  merge(1)

NAME

       merge - three-way file merge

SYNOPSIS

       file1 file2 file3

DESCRIPTION

       combines  two  files  that are revisions of a single original file.  The original file is file2, and the revised files are file1 and file3.
       identifies all changes that lead from file2 to file3 and from file2 to file1, then deposits the merged text into file1.	If the	option	is
       used, the result goes to standard output instead of file1.

       An  overlap  occurs  if both file1 and file3 have changes in the same place.  prints how many overlaps occurred, and includes both alterna-
       tives in the result.  The alternatives are delimited as follows:

	      lines in file1
	      lines in file3

       If there are overlaps, edit the result in file1 and delete one of the alternatives.

       This command is particularly useful for revision control, especially if file1 and file3 are the ends of two branches that have file2  as  a
       common ancestor.

EXAMPLES

       A typical use for is as follows:

	      1.   To  merge  an  RCS branch into the trunk, first check out the three different versions from RCS (see co(1)) and rename them for
		   their revision numbers: 5.2, 5.11, and 5.2.3.3.  File 5.2.3.3 is the end of an RCS branch that split off the trunk at file 5.2.

	      2.   For this example, assume file 5.11 is the latest version on the trunk, and is also a revision  of  the  "original"  file,  5.2.
		   Merge the branch into the trunk with the command:

	      3.   File  5.11  now  contains  all  changes  made on the branch and the trunk, and has markings in the file to show all overlapping
		   changes.

	      4.   Edit file 5.11 to correct the overlaps, then use the command to check the file back in (see ci(1)).

WARNINGS

       uses the ed(1) system editor.  Therefore, the file size limits of ed(1) apply to

AUTHOR

       was developed by Walter F. Tichy.

SEE ALSO

       diff3(1), diff(1), rcsmerge(1), co(1).

																	  merge(1)
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