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Full Discussion: Find EXACT word in files, just the word: no prefix, no suffix, no 'similar', just the word
Top Forums UNIX for Dummies Questions & Answers Find EXACT word in files, just the word: no prefix, no suffix, no 'similar', just the word Post 302616231 by Corona688 on Friday 30th of March 2012 04:28:40 PM
Old 03-30-2012
Quote:
Originally Posted by chicchan
My control file does not have the ^ and $. Maybe I should add those to each line.
You don't need them in the file itself.

^ and $ have special meanings to grep -- ^ means "Beginning of the line", and "$" means "end of the line."

So "^word$" would search for a line that starts, and ends, with word. It wouldn't match "wword" or "wordd".

So this doesn't sound relevant to what you want, since you're not looking for a regex at the beginning or end of a line. You're looking for an exact string in a column.

awk is very good at dealing with columns... How about:

Code:
awk '
# Save the list of strings to look for into the array A, so A["stringtofind1"]=1 etc.
NR==FNR{ A[$1]++; next};

{      # Check each column for the exact string.  If found, print the line and break the loop.
        for(N=1; N<=NF; N++) if(A[$N]) { print ; break }
}' controlfile logfile

Last edited by Corona688; 03-30-2012 at 05:34 PM..
 

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LEARN ABOUT LINUX

colrm

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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