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Full Discussion: Merging 2 text files when there is a common time stamp column in them
Top Forums Shell Programming and Scripting Merging 2 text files when there is a common time stamp column in them Post 302798673 by Skrynesaver on Thursday 25th of April 2013 03:39:51 AM
Old 04-25-2013
Taking the data as presented and outputting as a csv.
Code:
skrynesaver@busybox ~/tmp$ cat tmp.dat tmp_2.dat
Date_Time            Context  D1  D2
04/19/2013_23:48:54.819    ABCD   x     x
04/19/2013_23:48:55.307    ABCD   x     x
04/19/2013_23:48:55.823    ABCD   x     x
04/19/2013_23:48:56.309    ABCD   x     x
Date_Time       Context D3  D4
04/19/2013_23:48:54.819     ABCD   y      y
04/19/2013_23:48:55.821     ABCD   y      y
04/19/2013_23:48:56.799     ABCD   y      y
04/19/2013_23:48:57.819     ABCD   y      y

skrynesaver@busybox ~/tmp$ perl -Mstrict -e ' 
my %record;
open (DAT_1 , "<", $ARGV[0]);
while(<DAT_1>){
chomp;
  if (/^\d/){
    my @record=split/\s+/,$_;
    $record{reorder($record[0])}=join(",",@record," "," ");
  }
}
close(DAT_1);
open(DAT_2,"<",$ARGV[1]);
while(<DAT_2>){
  chomp;
  if(/^\d/){
    my @record=split/\s+/,$_;
    $record{reorder($record[0])}=$record{reorder($record[0])} 
                   ?sublast($record{reorder($record[0])},@record[2,3])
                   :join(",",@record[0,1]," "," ",@record[2,3]);
  }
}
END{
  for my $timestamp (sort keys %record){
    print $record{$timestamp},"\n";
  }
}
sub reorder{
  my $date=shift;
  my @date=split/\/|_/,$date;
  return join("_",@date[2,1,0,3]);
}
sub sublast{
  my ($record,@fields)=@_;
  my @record=split/,/,$record;
  @record[4,5]=@fields;
  return join",",@record
}' tmp.dat tmp_2.dat
04/19/2013_23:48:54.819,ABCD,x,x,y,y
04/19/2013_23:48:55.307,ABCD,x,x, ,
04/19/2013_23:48:55.821,ABCD, , ,y,y
04/19/2013_23:48:55.823,ABCD,x,x, ,
04/19/2013_23:48:56.309,ABCD,x,x, ,
04/19/2013_23:48:56.799,ABCD, , ,y,y
04/19/2013_23:48:57.819,ABCD, , ,y,y

 

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LEARN ABOUT CENTOS

paps

PAPS(1) 						      General Commands Manual							   PAPS(1)

NAME

       paps - UTF-8 to PostScript converter using Pango

SYNOPSIS

       paps [options] files...

DESCRIPTION

       paps reads a UTF-8 encoded file and generates a PostScript language rendering of the file. The rendering is done by creating outline curves
       through the pango ft2 backend.

OPTIONS

       These programs follow the usual GNU command line syntax, with long options starting with  two  dashes  (`-').   A  summary  of  options	is
       included below.

       --landscape
	      Landscape output. Default is portrait.

       --columns=cl
	      Number of columns output. Default is 1.

       --font=desc
	      Set the font description. Default is Monospace 12.

       --rtl  Do rtl layout.

       --paper ps
	      Choose paper size. Known paper sizes are legal, letter, a4. Default is A4.

       --bottom-margin=bm
	      Set bottom margin in postscript points (1/72 inch). Default is 36.

       --top-margin=tm
	      Set top margin. Default is 36.

       --left-margin=lm
	      Set left margin. Default is 36.

       --right-margin=rm
	      Set right margin. Default is 36.

       --help Show summary of options.

       --header
	      Draw page header for each page.

       --markup
	      Interpret the text as pango markup.

       --encoding=ENCODING
	      Assume the documentation encoding is ENCODING.

       --lpi  Set the lines per inch. This determines the line spacing.

       --cpi  Set the characters per inch. This is an alternative method of specifying the font size.

       --stretch-chars
	      Indicates  that  characters  should be stretched in the y-direction to fill up their vertical space. This is similar to the texttops
	      behaviour.

AUTHOR

       paps was written by Dov Grobgeld <dov.grobgeld@gmail.com>.

       This manual page was written by Lior Kaplan <kaplan@debian.org>, for the Debian project (but may be used by others).

								  April  17, 2006							   PAPS(1)
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