sha1sum验证算法,cd分发映像文件的，sha1值得计算，验证sha1-sha1sum verification algorithm, distributed cd image files, sha1 worth calculation, the certification sha1

一个简单实用的sha1加密算法的C实现。-a C source code computing sha1sum.

9base 9base is a port of various original Plan 9 tools for Unix, based on plan9port. It currently contains the following original (no source changes) shell commands from Plan 9 for Unix: ascii awk basename bc cal cat cleann