Extract Lines when Column K is empty with AWK/Perl

Posted by neversaint on Stack Overflow See other posts from Stack Overflow or by neversaint
Published on 2010-05-25T06:24:04Z Indexed on 2010/05/25 6:31 UTC
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Filed under:

linux

|

perl

|

unix

|

awk

I have data that looks like this:

foo 78 xxx
bar    yyy
qux 99 zzz
xuq    xyz

They are tab delimited. How can I extract lines where column 2 is empty, yielding

bar    yyy
xuq    xyz

I tried this but doesn't seem to work:

awk '$2==""' myfile.txt

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