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Operating Systems Linux Comparing specific columns between two files Post 302956317 by Don Cragun on Tuesday 29th of September 2015 03:42:03 AM
Old 09-29-2015
The idea of matching fields in one file against a field in another file is easy with awk. But, given that there is only one line in file-B where both columns are the same and there is no line in file-A that contains the value that appears in that line in file-B, there is no output matching your request. Or, did I misunderstand what you're trying to do???

And, if there were lines in your input files that met your criteria, your description of the output you want is not clear.

Please describe more clearly what you are trying to do and show us the sample output you are trying to produce from your sample inputs.
 

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COLRM(1)						    BSD General Commands Manual 						  COLRM(1)

NAME
colrm -- remove columns from a file SYNOPSIS
colrm [start [stop]] DESCRIPTION
The colrm utility removes selected columns from the lines of a file. A column is defined as a single character in a line. Input is read from the standard input. Output is written to the standard output. If only the start column is specified, columns numbered less than the start column will be written. If both start and stop columns are spec- ified, columns numbered less than the start column or greater than the stop column will be written. Column numbering starts with one, not zero. Tab characters increment the column count to the next multiple of eight. Backspace characters decrement the column count by one. ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7). EXIT STATUS
The colrm utility exits 0 on success, and >0 if an error occurs. SEE ALSO
awk(1), column(1), cut(1), paste(1) HISTORY
The colrm command appeared in 3.0BSD. BSD
August 4, 2004 BSD
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