.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.012.
.TH JOIN "1" "August 1999" "GNU textutils 2.0" FSF
.SH NAME
join \- join lines of two files on a common field
.SH SYNOPSIS
.B join
[\fIOPTION\fR]...\fI FILE1 FILE2\fR
.SH DESCRIPTION
.PP
.\" Add any additional description here
.PP
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.
.TP
\fB\-a\fR SIDE
print unpairable lines coming from file SIDE
.TP
\fB\-e\fR EMPTY
replace missing input fields with EMPTY
.IP
\fB\-i\fR, \fB\-\-ignore\-case\fR ignore differences in case when comparing fields
\fB\-j\fR FIELD          (obsolescent) equivalent to `-1 FIELD \fB\-2\fR FIELD'
\fB\-j1\fR FIELD         (obsolescent) equivalent to `-1 FIELD'
\fB\-j2\fR FIELD         (obsolescent) equivalent to `-2 FIELD'
\fB\-o\fR FORMAT         obey FORMAT while constructing output line
\fB\-t\fR CHAR           use CHAR as input and output field separator
\fB\-v\fR SIDE           like \fB\-a\fR SIDE, but suppress joined output lines
\fB\-1\fR FIELD          join on this FIELD of file 1
\fB\-2\fR FIELD          join on this FIELD of file 2
.TP
\fB\-\-help\fR
display this help and exit
.TP
\fB\-\-version\fR
output version information and exit
.PP
Unless \fB\-t\fR 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.
.SH "REPORTING BUGS"
Report bugs to <bug-textutils@gnu.org>.
.SH "SEE ALSO"
The full documentation for
.B join
is maintained as a Texinfo manual.  If the
.B info
and
.B join
programs are properly installed at your site, the command
.IP
.B info join
.PP
should give you access to the complete manual.
.SH COPYRIGHT
Copyright \(co 1999 Free Software Foundation, Inc.
.br
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.