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Full Discussion: how do i parse by specific column?
Top Forums Shell Programming and Scripting how do i parse by specific column? Post 302231503 by ShawnMilo on Tuesday 2nd of September 2008 01:01:28 PM
Old 09-02-2008
Quote:
Originally Posted by kmaq7621
I have a log file with 13 columns. The 12th column contains the status code (example 200, 404, 500, 403, etc.) I want to remove all 200 status lines. so...

1. remove all the lines in which the 12th column has a 200.
2. display only the lines in which the 12th column shows a 500.

Thanks.
perl -ane 'print unless $F[11] eq "200"' temp.txt
perl -ane 'print if $F[11] eq "500"' temp.txt

Note: The -a flag to Perl is "auto-split," which creates an array named F which you can then address by element.
 

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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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