[KLUG Members] awk question

[Adam Tauno Williams]

> Trying to get the uncompressed size of a file I've come up with
> gzip -l somezipfile.gz | awk /[0-9]+/'{print $2)'
> Now I want to know how it works.
> The output of gzip -l looks like: 
>          compressed        uncompressed  ratio uncompressed_name
>          1837372631          3201867776  42.6% somefile.txt
> And when I initially did 
> gzip -l somezipfile.gz | awk '{print $2)'
> I got
> uncompressed
> 3201867776
> I didn't want the "uncompressed" string, just the number.
> Are those two results the result of awk outputting the second "word" of
> two lines?

Yes.  It is assumed that whitespace is the delimiter.

>   I kept trying to break them up but couldn't, and ended up
> telling awk to only keep the "word" that had numbers in it.

you could just to a gzip... | tail -1 | awk.... to just give awk the
last line.
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