09-12-2002
Compress - How small can a file before it will create the .Z
I am just curious. Compress by itself will not compress a file of zero bytes. (I know gzip does)
Without using compress -f, at what point will compress work. In other words, what is the smallest the file can be before it will create the .Z file?
Some of us here are just wondering...
Thx
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ZNEW(1) General Commands Manual ZNEW(1)
NAME
znew - recompress .Z files to .gz files
SYNOPSIS
znew [ -ftv9PK] [ name.Z ... ]
DESCRIPTION
Znew recompresses files from .Z (compress) format to .gz (gzip) format. If you want to recompress a file already in gzip format, rename
the file to force a .Z extension then apply znew.
OPTIONS
-f Force recompression from .Z to .gz format even if a .gz file already exists.
-t Tests the new files before deleting originals.
-v Verbose. Display the name and percentage reduction for each file compressed.
-9 Use the slowest compression method (optimal compression).
-P Use pipes for the conversion to reduce disk space usage.
-K Keep a .Z file when it is smaller than the .gz file
SEE ALSO
gzip(1), zmore(1), zdiff(1), zgrep(1), zforce(1), gzexe(1), compress(1)
BUGS
Znew does not maintain the time stamp with the -P option if cpmod(1) is not available and touch(1) does not support the -r option.
ZNEW(1)