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RedHat 9 (Linux i386) - man page for join (redhat section 1)

JOIN(1) 								FSF								   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 SIDE print unpairable lines coming from file SIDE -e EMPTY replace missing input fields with EMPTY -i, --ignore-case ignore differences in case when comparing fields -j FIELD (obsolescent) equivalent to `-1 FIELD -2 FIELD' -j1 FIELD (obsolescent) equivalent to `-1 FIELD' -j2 FIELD (obsolescent) equivalent to `-2 FIELD' -o FORMAT obey FORMAT while constructing output line -t CHAR use CHAR as input and output field separator -v SIDE like -a SIDE, 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 `SIDE.FIELD' or `0'. Default FORMAT outputs the join field, the remaining fields from FILE1, the remaining fields from FILE2, all separated by CHAR.
AUTHOR
Written by Mike Haertel.
REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>.
COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE.
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 (coreutils) 4.5.3 February 2003 JOIN(1)

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