LinuxConfig -

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1. Name

join - join lines of two files on a common field

2. Synopsis

join [OPTION]... FILE1 FILE2

3. 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 file2

--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 FORMAT 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.

4. Author

Written by Mike Haertel.

5. Reporting Bugs

Report bugs to < This email address is being protected from spambots. You need JavaScript enabled to view it. >.

6. Copyright

Copyright © 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.

7. 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.

 

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Table of Contents

 

• Name
• Synopsis
• Description
• Author
• Reporting Bugs
• Copyright
• See Also