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JOIN(1) 			 User Commands			       JOIN(1)

       join - join lines of two files on a common field

       join [OPTION]... FILE1 FILE2

       For  each  pair of input lines with identical join fields, write a line
       to standard output.  The default join field is the first, delimited  by
       whitespace.   When FILE1 or FILE2 (not both) is -, read standard input.

       -a FILENUM
	      print unpairable lines coming from file FILENUM,	where  FILENUM
	      is 1 or 2, corresponding to FILE1 or FILE2

       -e EMPTY
	      replace missing input fields with EMPTY

       -i, --ignore-case ignore differences in case when comparing fields

       -j FIELD
	      equivalent to -1 FIELD -2 FIELD

       -o FORMAT
	      obey FORMAT while constructing output line

       -t CHAR
	      use CHAR as input and output field separator

       -v FILENUM
	      like -a FILENUM, but suppress joined output lines

       -1 FIELD
	      join on this FIELD of file 1

       -2 FIELD
	      join on this FIELD of file 2

       --help display this help and exit

	      output version information and exit

       Unless  -t  CHAR  is  given,  leading  blanks  separate	fields and are
       ignored, else fields are separated by CHAR.  Any FIELD is a field  num
       ber  counted  from  1.	FORMAT is one or more comma or blank separated
       specifications, each being FILENUM.FIELD or 0.  Default FORMAT out
       puts  the  join	field,	the remaining fields from FILE1, the remaining
       fields from FILE2, all separated by CHAR.

       Important: FILE1 and FILE2 must be sorted on the join fields.

       Written by Mike Haertel.

       Report bugs to .

       Copyright  2006 Free Software Foundation, Inc.
       This is free software.  You may redistribute copies  of	it  under  the
       terms	   of	    the      GNU      General	   Public      License
       .	There is NO WARRANTY,  to  the
       extent permitted by law.

       The  full documentation for join is maintained as a Texinfo manual.  If
       the info and join programs are properly installed  at  your  site,  the

	      info join

       should give you access to the complete manual.

join 5.97			 January 2007			       JOIN(1)

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