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Top Forums Shell Programming and Scripting Join and merge multiple files with duplicate key and fill void columns Post 303040719 by Scrutinizer on Tuesday 5th of November 2019 01:12:00 PM
Old 11-05-2019
Hi, try:
Code:
join -t \| -a 1 -a 2 -e 'NULL' -o 0 1.2 1.3 1.4 2.2 2.3 2.4 \
<(join -t \| -a 1 -a 2 -e 'NULL' -o 0 1.2 2.2 2.3 file1 file2) file3


Last edited by Scrutinizer; 11-05-2019 at 02:18 PM..
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join(1T)						       Tcl Built-In Commands							  join(1T)

__________________________________________________________________________________________________________________________________________________

NAME
join - Create a string by joining together list elements SYNOPSIS
join list ?joinString? _________________________________________________________________ DESCRIPTION
The list argument must be a valid Tcl list. This command returns the string formed by joining all of the elements of list together with joinString separating each adjacent pair of elements. The joinString argument defaults to a space character. EXAMPLES
Making a comma-separated list: set data {1 2 3 4 5} join $data ", " => 1, 2, 3, 4, 5 Using join to flatten a list by a single level: set data {1 {2 3} 4 {5 {6 7} 8}} join $data => 1 2 3 4 5 {6 7} 8 SEE ALSO
list(1T), lappend(1T), split(1T) KEYWORDS
element, join, list, separator ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWTcl | +--------------------+-----------------+ |Interface Stability | Uncommitted | +--------------------+-----------------+ NOTES
Source for Tcl is available on http://opensolaris.org. Tcl join(1T)
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