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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, 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 --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 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.

AUTHOR

Written by Mike Haertel.

REPORTING BUGS

Report bugs to <bug-coreutils@gnu.org>.

COPYRIGHT

Copyright (C) 2006 Free Software Foundation, Inc. This is free software. You may redistribute copies of it under the terms of the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. 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. join 5.97 March 2012 JOIN(1)

1994 Man-cgi 1.15, Panagiotis Christias <christia@theseas.ntua.gr>