| Xavier Noria 2006-01-10, 4:02 am |
| On Dec 30, 2005, at 13:14, S Khadar wrote:
> Hi all,
>
> I have a 15 thousand directories - each of them contain say 10
> files (all
> *.gzip)
> out of this 10 *.gz files - I want to check whether a file named
> foo.gz
> contain any content or not - since my files are gzipped even the
> blank file
> occupies some size.
Even if gzipped files have always more than 0 bytes, wouldn't it be
true than all empty gzipped files have the same size, and that non-
empty gzipped files are greater than that minimum? In this Mac that
size seems to be 24 bytes.
If that was the case you could use a regular -s instead of that z*
trickery, which multiplied by thousands of directories will make a
difference.
-- fxn
% touch foo
% ls -l foo
-rw-r--r-- 1 fxn staff 0 Dec 30 20:26 foo
% gzip foo
% ls -l foo.gz
-rw-r--r-- 1 fxn staff 24 Dec 30 20:26 foo.gz
% echo x > bar
% ls -l bar
-rw-r--r-- 1 fxn staff 2 Dec 30 20:27 bar
% gzip bar
% ls -l bar.gz
-rw-r--r-- 1 fxn staff 26 Dec 30 20:27 bar.gz
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