znew
—
convert compressed files to gzipped files
The
znew
utility uncompresses files
compressed by
compress(1)
and recompresses them with
gzip(1).
The options are as follows:
-f
- Overwrite existing ‘.gz’ files. Unless this option is
specified,
znew
refuses to overwrite
existing files.
-t
- Test integrity of the gzipped file before deleting the original file. If
the integrity check fails, the original ‘.Z’ file is not
removed.
-v
- Print a report specifying the achieved compression ratios.
-9
- Use the -9 mode of
gzip(1),
achieving better compression at the cost of slower execution.
-K
- Keep the original ‘.Z’ file if it uses less disk blocks than
the gzipped one. A disk block is 1024 bytes.
gzip(1)
The
znew
utility tries to maintain the file
mode of the original file. If the original file is not writable, it is not
able to do that and
znew
will print a
warning.