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Full Discussion: awk search column, print line
Top Forums Shell Programming and Scripting awk search column, print line Post 302377342 by Matthias03 on Thursday 3rd of December 2009 07:58:12 PM
Old 12-03-2009
awk search column, print line
Hello.

I've been banging my head against walls trying to search a comma delimited file, using awk. I'm trying to search a "column" for a specific parameter, if it matches, then I'd like to print the whole line.

I've read in multiple texts:

awk -F, '{ if ($4 == "string") print $0 }' filename
OR
awk -F, '{ $4 == "string" }' filename

And nothing seems to work? What am I doing wrong?

Info:
OS - Ubuntu 9.10, using bash


BTW, this is my first post on these forums, please forgive any misused etc. etc.. I've been using these forums heavily to learn how to shell script etc.. This is an amazing community, us n00bs are lucky to have something like this. Thank you all so much.

If my question has been answered in another post (which I believe it has, but it didn't work see https://www.unix.com/unix-dummies-que...int-lines.html )... please forgive me.


Thanks again
 

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LEARN ABOUT OSX

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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