I need to perform a grep from a file, but ignore any results from the first column.
For simplicity I have changed the actual data, but for arguments sake, I have a file that reads:
The first column in this file will always contain a 6-character ID. This file is basically a lookup table where a grep is performed with the idea of returning the ID in the first column. There can be many aliases for each ID, as you can see above.
The problem I have is that sometimes I get 2 IDs returned. For example, when I grep for 'NAC', with the aim being to return the ID 'NAC000', but this grep also matches the ID for the MONACO line.
Is there any way to grep, but ignore any matches from the first column? Or perhaps grep only from column 2, or 3 etc etc?
Thanks.
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Last edited by vgersh99; 02-15-2011 at 05:08 PM..
Reason: code tags, please!
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Discussion started by: jiam912
12 Replies
LEARN ABOUT FREEBSD
wcwidth
WCWIDTH(3) BSD Library Functions Manual WCWIDTH(3)NAME
wcwidth -- number of column positions of a wide-character code
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <wchar.h>
int
wcwidth(wchar_t wc);
DESCRIPTION
The wcwidth() function determines the number of column positions required to display the wide character wc.
RETURN VALUES
The wcwidth() function returns 0 if the wc argument is a null wide character (L'