{"id":9184,"date":"2023-11-28T20:56:09","date_gmt":"2023-11-28T12:56:09","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=9184"},"modified":"2023-11-30T22:11:34","modified_gmt":"2023-11-30T14:11:34","slug":"linux-zhong-wen-jian-miao-shu-fu-mei-ge-miao-shu-f","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/linux-zhong-wen-jian-miao-shu-fu-mei-ge-miao-shu-f\/","title":{"rendered":"Linux \u4e2d\u6587\u4ef6\u63cf\u8ff0\u7b26\uff1f\u6bcf\u4e2a\u63cf\u8ff0\u7b26\u7684\u542b\u4e49\uff1f"},"content":{"rendered":"<p>\u5728 Linux \u4e2d\uff0c\u6587\u4ef6\u63cf\u8ff0\u7b26\uff08File Descriptors\uff09\u662f\u7528\u6765\u8bbf\u95ee\u6587\u4ef6\u3001\u8bbe\u5907\u6216\u5176\u4ed6 I\/O \u8d44\u6e90\u7684\u62bd\u8c61\u6982\u5ff5\u3002\u6bcf\u4e2a\u8fd0\u884c\u7684\u8fdb\u7a0b\u90fd\u6709\u4e00\u5f20\u6587\u4ef6\u63cf\u8ff0\u7b26\u8868\uff0c\u8fd9\u5f20\u8868\u8ddf\u8e2a\u7740\u6587\u4ef6\u63cf\u8ff0\u7b26\u548c\u5b9e\u9645\u6587\u4ef6\u4e4b\u95f4\u7684\u6620\u5c04\u5173\u7cfb\u3002\u6807\u51c6\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u7f16\u53f7\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li><strong>0<\/strong>\uff1a\u6807\u51c6\u8f93\u5165\uff08stdin\uff09 &#8211; \u4ee3\u8868\u8fdb\u7a0b\u7684\u6807\u51c6\u8f93\u5165\u6d41\u3002<\/li>\n<li><strong>1<\/strong>\uff1a\u6807\u51c6\u8f93\u51fa\uff08stdout\uff09- \u4ee3\u8868\u8fdb\u7a0b\u7684\u6807\u51c6\u8f93\u51fa\u6d41\u3002<\/li>\n<li><strong>2<\/strong>\uff1a\u6807\u51c6\u9519\u8bef\uff08stderr\uff09- \u4ee3\u8868\u8fdb\u7a0b\u7684\u6807\u51c6\u9519\u8bef\u8f93\u51fa\u6d41\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u6587\u4ef6\u63cf\u8ff0\u7b26\u901a\u5e38\u7528\u4e8e\u6807\u51c6\u7684 I\/O \u64cd\u4f5c\u3002\u5f53\u4e00\u4e2a\u7a0b\u5e8f\u8fd0\u884c\u65f6\uff0c\u5b83\u4f1a\u81ea\u52a8\u6253\u5f00\u8fd9\u4e09\u4e2a\u6807\u51c6\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u5141\u8bb8\u5b83\u4eec\u4e0e\u7ec8\u7aef\u8fdb\u884c\u4ea4\u4e92\u3002\u901a\u5e38\uff0c\u8fd9\u4e9b\u63cf\u8ff0\u7b26\u5728\u547d\u4ee4\u884c\u4e2d\u4e0d\u9700\u8981\u663e\u5f0f\u5730\u6307\u5b9a\uff0c\u56e0\u4e3a\u5b83\u4eec\u662f\u9ed8\u8ba4\u6253\u5f00\u7684\u3002<\/p>\n<p>\u9664\u4e86\u6807\u51c6\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u4ece3\u5f00\u59cb\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u901a\u5e38\u7528\u4e8e\u6253\u5f00\u5176\u4ed6\u6587\u4ef6\u3001\u5957\u63a5\u5b57\u3001\u7ba1\u9053\u6216\u5176\u4ed6\u7c7b\u578b\u7684 I\/O \u8d44\u6e90\u3002\u6bcf\u5f53\u6253\u5f00\u4e00\u4e2a\u65b0\u7684\u6587\u4ef6\u6216\u8d44\u6e90\u65f6\uff0c\u5185\u6838\u90fd\u4f1a\u4e3a\u8be5\u8d44\u6e90\u5206\u914d\u4e00\u4e2a\u65b0\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002<\/p>\n<p>Linux \u4e2d\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u8fd8\u6709\u4e00\u4e2a\u6700\u5927\u9650\u5236\uff0c\u901a\u5e38\u4e3a1024\u6216\u66f4\u591a\u3002\u8fd9\u4e2a\u9650\u5236\u51b3\u5b9a\u4e86\u8fdb\u7a0b\u80fd\u591f\u540c\u65f6\u6253\u5f00\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u91cf\u3002<\/p>\n<p>\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u542b\u4e49\u662f\u5728\u8fdb\u7a0b\u548c\u64cd\u4f5c\u7cfb\u7edf\u4e4b\u95f4\u5efa\u7acb\u4e00\u4e2a\u62bd\u8c61\u5c42\uff0c\u4f7f\u5f97\u8fdb\u7a0b\u53ef\u4ee5\u901a\u8fc7\u6587\u4ef6\u63cf\u8ff0\u7b26\u6765\u8bbf\u95ee\u548c\u64cd\u4f5c\u5404\u79cd I\/O \u8d44\u6e90\uff0c\u5305\u62ec\u6587\u4ef6\u3001\u7ba1\u9053\u3001\u5957\u63a5\u5b57\u7b49\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Linux \u4e2d\uff0c\u6587\u4ef6\u63cf\u8ff0\u7b26\uff08File Descriptors\uff09\u662f\u7528\u6765\u8bbf\u95ee\u6587\u4ef6\u3001\u8bbe\u5907\u6216\u5176\u4ed6 I\/O \u8d44\u6e90\u7684\u62bd [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[105],"tags":[],"class_list":["post-9184","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9184","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=9184"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9184\/revisions"}],"predecessor-version":[{"id":13793,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9184\/revisions\/13793"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=9184"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=9184"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=9184"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}