How can I gzip only files not already gzipped 2

[pjb]

I'm looking for a way, that would let me gzip all the files in a given directory that are not already gzipped. These would be files with names not ending in .gz I suspect some type of loop with a grep, but I can't seem to come up with one.

 

[Mike042]

You could read all the files in a directory with:

cd /path/to/dir
for file in `ls`
do
echo $file | grep -v ".gz$"
done

or push the files through an 'xargs' with:

find /path/to/dir ! -name "*.gz" | xargs ...


I hope that helps.

Mike

 

[hoinz]

Why do you care at all?
If you try to gzip a file with a name ending in .gz, gzip will tell you, and do nothing.

 

[KenCunningham]

Alternatively, just redirect the error (2>) to /dev/null and don't worry about it.

I don't mind people who aren't what they seem. I just wish they'd make their mind up.

 

[pjb]

Why do I care? Justy so it runs a little cleaner. about 500 files in dir already zipped. I could suppress the message I supose, but it just seems nifty to be able to zip only the few that need it. Could go either way though.

 

[hoinz]

pjb.
ok, I see; fair enough.

But obviously I am not the only one who prefers a '2>/dev/null'.

 

[columb]

gzip -q *

supresses the 'already zipped' message. I appreciate your wish not to even attempt to zip files that are already zipped but gzip will be just as fast as the ksh alternatives and/or xargs. In short, gzip has this wheel, don't reinvent it .

Ceci n'est pas une signature
Columb Healy

 

[KenCunningham]

Good point Columb, I hadn't appreciated that.

I don't mind people who aren't what they seem. I just wish they'd make their mind up.

 

[SamBones]

In Korn shell (maybe others too)...

gzip !(*.gz)

That will gzip everything not ending in ".gz".

 

[Annihilannic]

But obviously I am not the only one who prefers a '2>/dev/null'.

I am one of those who does not; who knows when you might be redirecting errors that you might actually want to see? Filesystem full for example?

Annihilannic.