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Top Forums Shell Programming and Scripting Comparing two columns from two different files Post 302595261 by amarn on Thursday 2nd of February 2012 12:57:48 PM
Old 02-02-2012
thank you tukuyomi, however the code you gave me produces only the the first column of file2 and does not go through the comparison...

just to inform that file1 has 2000 unique records and file2 has 5000 unique records... therefore i would expect to get as a result after the comparison in file3 exactly 2000 records.... based on your code i get a file that has 5000 records (therefore it didn't go through the comparison of file1 vs. file2)
 

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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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