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Diffstat (limited to 'doc/lziprecover.texi')
| -rw-r--r-- | doc/lziprecover.texi | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/doc/lziprecover.texi b/doc/lziprecover.texi index a460607..80d6eb4 100644 --- a/doc/lziprecover.texi +++ b/doc/lziprecover.texi @@ -6,19 +6,19 @@ @finalout @c %**end of header -@set UPDATED 1 July 2014 -@set VERSION 1.16-rc1 +@set UPDATED 29 August 2014 +@set VERSION 1.16 @dircategory Data Compression @direntry -* Lziprecover: (lziprecover). Data recovery tool for lzip files +* Lziprecover: (lziprecover). Data recovery tool for the lzip format @end direntry @ifnothtml @titlepage @title Lziprecover -@subtitle Data recovery tool for lzip files +@subtitle Data recovery tool for the lzip format @subtitle for Lziprecover version @value{VERSION}, @value{UPDATED} @author by Antonio Diaz Diaz @@ -47,8 +47,7 @@ This manual is for Lziprecover (version @value{VERSION}, @value{UPDATED}). @end menu @sp 1 -Copyright @copyright{} 2009, 2010, 2011, 2012, 2013, 2014 -Antonio Diaz Diaz. +Copyright @copyright{} 2009-2014 Antonio Diaz Diaz. This manual is free documentation: you have unlimited permission to copy, distribute and modify it. @@ -87,6 +86,11 @@ Additionally lzip is copylefted, which guarantees that it will remain free forever. @end itemize +A nice feature of the lzip format is that a corrupt byte is easier to +repair the nearer it is from the beginning of the file. Therefore, with +the help of lziprecover, losing an entire archive just because of a +corrupt byte near the beginning is a thing of the past. + Lziprecover is able to recover or decompress files produced by any of the compressors in the lzip family; lzip, plzip, minilzip/lzlib, clzip and pdlzip. @@ -287,7 +291,7 @@ forms of data corruption. Bit-flip happens when one bit in the file is changed from 0 to 1 or vice versa. It may be caused by bad RAM or even by natural radiation. I have -seen a case of bit-flip in a file stored in an USB flash drive. +seen a case of bit-flip in a file stored on an USB flash drive. Repairing a file can take some time. Small files or files with the error located near the beginning can be repaired in a few seconds. But @@ -564,8 +568,17 @@ Test N-bit errors only, instead of testing all the 255 wrong values for each byte. @samp{N-bit error} means any value differing from the original value in N bit positions, not a value differing from the original value in the bit position N.@* -The number of N-bit errors per byte (N = 1 to 8) is: 8 28 56 70 56 28 8 1@* -Examples of @var{range}: 1 1,2,3 1-4 1,3-5,8 1-3,5-8 +The number of N-bit errors per byte (N = 1 to 8) is: +@w{8 28 56 70 56 28 8 1} + +@multitable {Examples of @var{range}} {1, 2, 3, 5, 6, 7 and 8} +@item Examples of @var{range} @tab Tests errors of N-bit +@item 1 @tab 1 +@item 1,2,3 @tab 1, 2 and 3 +@item 2-4 @tab 2, 3 and 4 +@item 1,3-5,8 @tab 1, 3, 4, 5 and 8 +@item 1-3,5-8 @tab 1, 2, 3, 5, 6, 7 and 8 +@end multitable @item -p @var{bytes} @itemx --position=@var{bytes} |