MAN page from Mandrake Other yabba-1.00-1.i386.rpm

unyabba

Section: User Commands (1)
Index

NAME

unyabba - decompress data compressed with Y coding

unwhap - decompress data compressed with AP coding

SYNTAX

unyabba[-mmem] [-qQvrR] [-ACHUVW]

unwhap[-mmem] [-qQvrR] [-ACHUVW]

DESCRIPTION

unyabbadecompresses its standard input,which must have come fromyabba,and writes the result to its standard output.

unwhapis likeunyabba,but works with files fromwhap.Warning: If you useunwhapexcept for experimental use,you may be infringing upon a patent.

OptionsACHUVWprint the authorship notice,copyright notice,help notice,short usage summary,version number,and warranty information respectively.

unyabbahas several flags:

: Assume that the input was produced for memory sizemem.yabbamust have been given the same value ofmem.memcannot be larger than a value specified at compile-time.Typical values ofmemare 12000, 20000, 40000, 65533, 200000, 500000, and 1000000.
: Assume that the input was ``randomized''byyabba.unyabbawill not expect its usual header,and will strip out the pseudo-random informationintroduced byyabba.Caveat:unyabbanormally checks for the propersetting in the input.Underit cannot do so.
: Look for the usual header, and complain about apparently random input.This is the default.
: unyabbawill be ``verbose'' and report compression statisticsto standard error.
: Quiet.unyabbawill not usestandard error in any way.
: Normal level of verbosity.

andassume a different structure for the compressed file.Be careful to have selected the same flags foryabba.

DIAGNOSTICS

In: xxx chars Out: xxx chars UnY'd from: xx%: The utilizer of the computational machineryhas specified the ``verbose'' optiontounyabbavia theestablishment of the character vwithin an argumentpreceded by a hyphen.
fatal: output error: Self-explanatory.
fatal: input not in right format: Theyabbaheader is not there.
fatal: input has -m xxx, I have -m yyy: Self-explanatory.
fatal: input corrupt: The input is not a compressed file. (Note thatunyabbawill always detect this, unlikeuncompress,which may simply produce incorrect output.)Did you compress with

EXIT CODE

0 normally, 1 for syntax errors or usage messages,2 for output errors,3 if the input is not in the right format,4 if the input was compressed with a different value ofmem,5 if the input is corrupt.

FILES

None.

BUGS

None known.

VERSION

unwhap 1.00, March 19, 1991.

AUTHOR

Placed into the public domain by Daniel J. Bernstein.

REFERENCES

D. J. Bernstein, ``Y coding.''Preprints available soon.

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