check to see if a file is compressed before trying to compress

rstone · #1 (**permalink**) 11-16-2008

I simply need to compress all files in a directory that are not already compressed and that are older than 10 days?

I have this so far. I need to add to this so I don't try and compress file that are already compressed. Or if you think this can be simplified let me know. Thx.

find /my/dir -name "*.xml*" -mtime +10 -ls
find /my/dir -name "*.xml*" -mtime +10 -exec gzip -f {} \;

Thanks for reading

bsddaemon · #2 (**permalink**) 11-16-2008

Have a look at command file

Lakris · #3 (**permalink**) 11-17-2008

Hi,
the *.xml*pattern will include already gzipped files, if they as by default get an extension of .gz. Wouldn't it work with *.xml instead?

/Lakris

bsddaemon · #4 (**permalink**) 11-17-2008

Then try the command:

strings your_file | grep xml

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