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>read\u2013\u8fd9\u662f\u5185\u6838\u5c06\u6570\u636e\u4f20\u9012\u56de\u7528\u6237\u7a7a\u95f4\u7684\u65b9\u6cd5.\u6b64\u51fd\u6570\u5728\u8c03\u7528read()\u7cfb\u7edf<\/a>\u8c03\u7528\u7684\u7528\u6237\u7a7a\u95f4\u7ebf\u7a0b\u7684\u4e0a\u4e0b\u6587\u4e2d\u8fd0\u884c,\u5728\u60a8\u7684\u60c5\u51b5\u4e0blinux\u5185\u6838\u8c03\u7528\u5e94\u7528\u7a0b\u5e8f<\/strong>,\u5b83\u5e94\u5f53\u963b\u585e,\u76f4\u81f3\u5185\u6838\u5177\u6709\u987b\u8981\u6653\u5f97\u8f93\u51fa\u7684\u53e6\u4e00\u4e2a\u79cd\u5b50\u503c.<\/p>\n

$\u5185\u6838\u7cfb\u7edf\u8c03\u7528_linux\u5185\u6838\u8c03\u7528\u5e94\u7528\u7a0b\u5e8f_\u8c03\u7528\u5185\u6838\u6a21\u5757\u4e2d\u7684\u51fd\u6570$ <\/p>\n

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while (1) {\n    read(fd,buf,sizeof buf);\n    calculate_output(buf,output);\n    write(fd,output,sizeof output);\n}\n<\/code><\/pre>\n<\/p>\n<\/p>\n
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