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UNIX in a Nutshell: System V Edition

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UNIX Commands
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compress [options] [files]

Reduce the size of one or more files using adaptive Lempel-Ziv coding, and move to file.Z. Restore with uncompress or zcat.



Limit the number of bits in coding to n; n is 9-16, and 16 is the default. A lower n produces a larger, less densely compressed file.


Write to the standard output (do not change files).


Compress unconditionally; i.e., do not prompt before overwriting files.


Print the resulting percentage of reduction for files.

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