help with awk command


 
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# 1  
Old 04-26-2011
help with awk command

Hi,

I need a awk command to identify a few pattern in a file and delete them.

Rule - Delete lines that has single/multi space within double quotes
Quote:
OSBKCODE VARCHAR(35)
OSBKNAME VARCHAR(35)
"OS IT1" VARCHAR(35),
OSREMIT1 VARCHAR(35),
"OS IT4" VARCHAR(35),
Quote:
OSBKCODE VARCHAR(35)
OSBKNAME VARCHAR(35)
"OS IT1" VARCHAR(35),
OSREMIT1 VARCHAR(35),

Thanks.
# 2  
Old 04-26-2011
How about...
Code:
awk '$1 ~ /^"/ && $1 !~ /"$/ {next} 1' myfile

---------- Post updated at 03:53 PM ---------- Previous update was at 03:49 PM ----------

If you have any lines with a double quote as the 1st character and a space as the 2nd character, then you'll need to amend as follows:
Code:
awk '$1 ~ /^"/ && (length($1)==1 || $1 !~ /"$/) {next} 1' myfile

This User Gave Thanks to cambridge For This Post:
# 3  
Old 04-26-2011
Quote:
Originally Posted by cambridge
How about...
Code:
awk '$1 ~ /^"/ && $1 !~ /"$/ {next} 1' myfile

This works fine, but may i know what this condition does.

Quote:
$1 !~ /"$/
# 4  
Old 04-26-2011
Code:
$1 !~ /"$/

Yields true if the first field does not contain a double quote as the last character.
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