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check is a simple commandline utility to calculate CRC-32 or Adler-32 checksums on the fly (that is, as a filter within a command pipeline), or to calculate such checksums on a list of files given as arguments. It is fast and was designed to be used for verification of backups and archives written to semi-reliable media (e.g., tapes), but it can also be used to compare files against versions stored within ZIP archives (same CRC) or to verify one-to-many copies without the need for multiple byte-for-byte comparisons.

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Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.

2004-02-15 01:49
4.3

此版本增加了一些功能的增强，其中最重要的是能够对华润链接在zlib的1.2.1 32代码和更高版本。一个令人印象深刻的80％的检查本土CRC码，这基本上是相同的速度提高，这结果因为这发现zlib的旧版本。此版本还优化了华润缓冲区大小，也增加了- t选项打印之前和之后每个文件的时间和日期（估计multigigabyte备份和DVD档案完工时间有用）。
标签: Major feature enhancements
This release adds several enhancements, the most important of which is
the ability to link against the CRC-32 code in zlib 1.2.1 and later.
This results in an impressive 80% speed improvement over check's native
CRC code, which is basically the same as that found in older versions
of zlib. This release also optimizes the CRC buffer size and adds a -t
option to print the time and date before and after each file (useful
for estimating the completion time of multigigabyte backups and DVD
archives).

2004-01-01 00:53
4.2

读取文件错误的检查已被固定（无论是由于磁盘/光盘错误或没有足够的权限）。对错误的行为已被更改，继续下一个文件（如有）。阿的错误总数最后简要已添加。
标签: Minor bugfixes
Error checking for unreadable files has been fixed (whether due to disk/disc errors or insufficient permissions). The behavior on errors has been changed to continue with the next file (if any). A final summary of the total number of errors has been added.

2003-02-24 17:17
4.1

此版本改进方案，分析，以支持级联（如“，奥地利”以及“- 1 -的C - V”），并纠正了在使用信息遗漏。
标签: Initial freshmeat announcement
This version improves option-parsing to support concatenation (e.g., "-acv" as well as "-a -c -v") and corrects an omission in the usage info.

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