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LZO是致力于解压速度的一种数据压缩算法,这个算法是无损算法

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User visible changes for lzop -- a real-time file compressor
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Changes in 1.00 (27 Apr 1998)
  * added command `--ls'
  * added options `--no-mode', `--no-time', `--no-warn' and `--ignore-warn'

Changes in 0.96 (13 Mar 1998)
  * updated documentation
  * added option `--no-stdin'

Changes in 0.95 (07 Dec 1997)
  * lzop now stores a checksum by default (use option `-F' to disable)
  * added support for filters
  * adapted for LZO 1.02
  * minor fixes and changes

Changes in 0.94 (15 Oct 1997)
  * added support for compressed archives (use with option `-o')

Changes in 0.93 (10 Sep 1997)
  * use overlapping (in-place) decompression to reduce memory requirements
  * added support for environment variable `LZOP'
  * compile fixes for broken headers under Solaris

Changes in 0.92 (07 Sep 1997): never released
  * fixed a bug in frames.c when passing an invalid pointer to free()

Changes in 0.91 (01 Sep 1997)
  * added option `-S'
  * use GNU getopt for commandline parsing
  * use dynamic memory allocation

Changes in 0.90 (10 Aug 1997)
  * first public release of lzop - requires LZO library v1.01

Sep 1996:
  * for historical reasons: this is when I started writing lzop