join(1) - phpMan

JOIN(1)                                   User Commands                                   JOIN(1)



NAME
       join - join lines of two files on a common field

SYNOPSIS
       join [OPTION]... FILE1 FILE2

DESCRIPTION
       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, corre-
              sponding 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

       --version
              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 number counted from 1.  FORMAT is one or more
       comma or blank separated specifications, each being `FILENUM.FIELD' or `0'.  Default  FOR-
       MAT  outputs  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.  E.g., use `sort -k 1b,1' if
       `join' has no options.

AUTHOR
       Written by Mike Haertel.

REPORTING BUGS
       Report bugs to <bug-coreutils AT gnu.org>.

COPYRIGHT
       Copyright  (C)  2008  Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or
       later <http://gnu.org/licenses/gpl.html>
       This is free software: you are free to change and redistribute it.  There is NO  WARRANTY,
       to the extent permitted by law.

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

              info join

       should give you access to the complete manual.



GNU coreutils 6.9.92.4-f088d-dirty         January 2008                                   JOIN(1)

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