{"id":51391,"date":"2024-12-03T12:53:36","date_gmt":"2024-12-03T04:53:36","guid":{"rendered":"https:\/\/fwq.ai\/blog\/51391\/"},"modified":"2024-12-03T12:53:36","modified_gmt":"2024-12-03T04:53:36","slug":"%e5%9c%a8linux%e4%b8%ad%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8read%e5%91%bd%e4%bb%a4%e8%af%bb%e5%8f%96%e6%96%87%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/51391\/","title":{"rendered":"\u5728Linux\u4e2d\u5982\u4f55\u4f7f\u7528read\u547d\u4ee4\u8bfb\u53d6\u6587\u4ef6"},"content":{"rendered":"

<\/b> <\/p>\n

\u5728Linux\u4e2d\u5982\u4f55\u4f7f\u7528read\u547d\u4ee4\u8bfb\u53d6\u6587\u4ef6<\/h1>\n

\u6b22\u8fce\u5404\u4f4d\u5c0f\u4f19\u4f34\u6765\u5230\u7c73\u4e91\uff0c\u76f8\u805a\u4e8e\u6b64\u90fd\u662f\u7f18\u54c8\u54c8\u54c8\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\uff0c\u5982\u679c\u4f60\u5bf9\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\u975e\u5e38\u611f\u5174\u8da3\u6216\u8005\u6b63\u5728\u81ea\u5b66\uff0c\u90fd\u53ef\u4ee5\u5173\u6ce8\u6211\uff0c\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\uff01\u5f53\u7136\uff0c\u6709\u4ec0\u4e48\u5efa\u8bae\u4e5f\u6b22\u8fce\u5728\u8bc4\u8bba\u7559\u8a00\u63d0\u51fa\uff01\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n

\u3010\u5982\u4f55\u4f7f\u7528Linux read\u547d\u4ee4\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u3011<\/p>\n

\u5728Linux\u7cfb\u7edf\u4e2d\uff0cread\u662f\u4e00\u4e2a\u7528\u4e8e\u4ece\u6807\u51c6\u8f93\u5165\u6216\u8005\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6570\u636e\u7684\u547d\u4ee4\u3002\u4f7f\u7528read\u547d\u4ee4\u53ef\u4ee5\u5e2e\u52a9\u7528\u6237\u5feb\u901f\u83b7\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u5e76\u8fdb\u884c\u540e\u7eed\u7684\u5904\u7406\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Linux read\u547d\u4ee4\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u5305\u62ec\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

    \n
  1. \u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9<\/li>\n<\/ol>\n

    \u8981\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u9996\u5148\u9700\u8981\u6253\u5f00\u7ec8\u7aef\uff0c\u5e76\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u683c\u5f0f\u6765\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff1a<\/p>\n

    read [-options] [variable]<\/pre>\n
    \u5176\u4e2d\uff0c-options<\/code>\u4ee3\u8868\u5404\u79cd\u9009\u9879\uff0cvariable<\/code>\u4ee3\u8868\u53d8\u91cf\u540d\u79f0\uff0c\u7528\u4e8e\u5b58\u50a8\u8bfb\u53d6\u7684\u6570\u636e\u3002<\/p>\n
      \n
    1. \u4ee3\u7801\u793a\u4f8b<\/li>\n<\/ol>\n
      \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3aexample.txt<\/code>\u7684\u6587\u672c\u6587\u4ef6\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n
      Hello, this is an example file.\nWelcome to the world of Linux.<\/pre>\n
      \u73b0\u5728\u6211\u4eec\u5c06\u4f7f\u7528read\u547d\u4ee4\u6765\u8bfb\u53d6\u8fd9\u4e2a\u6587\u4ef6\u7684\u5185\u5bb9\uff0c\u5e76\u5b58\u50a8\u5230\u53d8\u91cf\u4e2d\u3002\u5728\u7ec8\u7aef\u4e2d\u8f93\u5165\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
      while IFS= read -r line; do\n    echo \"$line\"\ndone < example.txt<\/pre>\n
      \u6267\u884c\u4ee5\u4e0a\u547d\u4ee4\u540e\uff0c\u7ec8\u7aef\u4f1a\u8f93\u51fa\u6587\u4ef6example.txt<\/code>\u7684\u5185\u5bb9\uff1a<\/p>\n
      Hello, this is an example file.\nWelcome to the world of Linux.<\/pre>\n
      \u4e0a\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u4e2d\uff0cwhile<\/code>\u5faa\u73af\u7528\u4e8e\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0cIFS=<\/code>\u7528\u4e8e\u9632\u6b62read\u547d\u4ee4\u53bb\u9664\u884c\u4e2d\u7684\u7a7a\u683c\uff0c-r<\/code>\u9009\u9879\u7528\u4e8e\u4fdd\u7559\u53cd\u659c\u6760\u5b57\u7b26\u7684\u539f\u59cb\u5f62\u5f0f\u3002<\/p>\n
        \n
      1. \u8bfb\u53d6\u6307\u5b9a\u884c<\/li>\n<\/ol>\n
        \u6709\u65f6\u5019\u6211\u4eec\u53ea\u60f3\u8bfb\u53d6\u6587\u4ef6\u4e2d\u7684\u7279\u5b9a\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
        read -r line_num < example.txt\nsed -n \"${line_num}p\" example.txt<\/pre>\n
        \u4ee5\u4e0a\u4ee3\u7801\u4f1a\u9996\u5148\u8bfb\u53d6\u6587\u4ef6\u4e2d\u6307\u5b9a\u884c\u7684\u5185\u5bb9\uff0c\u7136\u540e\u4f7f\u7528sed\u547d\u4ee4\u6765\u8f93\u51fa\u8be5\u884c\u5185\u5bb9\u3002<\/p>\n
          \n
        1. \u5176\u4ed6\u9009\u9879<\/li>\n<\/ol>\n
          \u9664\u4e86\u793a\u4f8b\u4e2d\u63d0\u5230\u7684\u65b9\u5f0f\u5916\uff0cread\u547d\u4ee4\u8fd8\u6709\u4e00\u4e9b\u5176\u4ed6\u5e38\u7528\u7684\u9009\u9879\uff0c\u6bd4\u5982-t<\/code>\u7528\u4e8e\u8bbe\u7f6e\u8d85\u65f6\u65f6\u95f4\uff0c-s<\/code>\u7528\u4e8e\u4fdd\u5bc6\u8f93\u5165\uff0c-n<\/code>\u7528\u4e8e\u9650\u5236\u8bfb\u5165\u7684\u5b57\u7b26\u6570\u7b49\u3002<\/p>\n
            \n
          1. \u7ed3\u8bed<\/li>\n<\/ol>\n
            \u901a\u8fc7\u4ee5\u4e0a\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u7075\u6d3b\u5730\u4f7f\u7528Linux read\u547d\u4ee4\u6765\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u5728\u8fdb\u884c\u6587\u672c\u5904\u7406\u3001\u6570\u636e\u5206\u6790\u7b49\u4efb\u52a1\u65f6\u975e\u5e38\u6709\u7528\u3002\u5e0c\u671b\u672c\u6587\u80fd\u5e2e\u52a9\u60a8\u66f4\u597d\u5730\u4e86\u89e3\u548c\u5e94\u7528read\u547d\u4ee4\u3002<\/p>\n
            \u4eca\u5929\u5173\u4e8e\u300a\u5728Linux\u4e2d\u5982\u4f55\u4f7f\u7528read\u547d\u4ee4\u8bfb\u53d6\u6587\u4ef6\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u7c73\u4e91\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n
            \n
            <\/dt>\n
            \n   Golang \u4e2d\u5982\u4f55\u786e\u4fdd\u7cbe\u5ea6\u51c6\u786e\u6027\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
            \u5728Linux\u4e2d\u5982\u4f55\u4f7f\u7528read\u547d\u4ee4\u8bfb\u53d6\u6587\u4ef6 \u6b22\u8fce\u5404\u4f4d\u5c0f\u4f19\u4f34\u6765\u5230\u7c73\u4e91\uff0c\u76f8\u805a\u4e8e\u6b64\u90fd\u662f\u7f18\u54c8\u54c8\u54c8\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u8bb2\u5230\u7b49\u7b49\u77e5\u8bc6\uff0c\u5982\u679c\u4f60\u5bf9\u6587\u7ae0\u76f8\u5173\u7684\u77e5\u8bc6\u975e\u5e38\u611f\u5174\u8da3\u6216\u8005\u6b63\u5728\u81ea\u5b66\uff0c\u90fd\u53ef\u4ee5\u5173\u6ce8\u6211\uff0c\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\uff01\u5f53\u7136\uff0c\u6709\u4ec0\u4e48\u5efa\u8bae\u4e5f\u6b22\u8fce\u5728\u8bc4\u8bba\u7559\u8a00\u63d0\u51fa\uff01\u4e00\u8d77\u5b66\u4e60\uff01 \u3010\u5982\u4f55\u4f7f\u7528Linux read\u547d\u4ee4\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u3011 \u5728Linux\u7cfb\u7edf\u4e2d\uff0cread\u662f\u4e00\u4e2a\u7528\u4e8e\u4ece\u6807\u51c6\u8f93\u5165\u6216\u8005\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6570\u636e\u7684\u547d\u4ee4\u3002\u4f7f\u7528read\u547d\u4ee4\u53ef\u4ee5\u5e2e\u52a9\u7528\u6237\u5feb\u901f\u83b7\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u5e76\u8fdb\u884c\u540e\u7eed\u7684\u5904\u7406\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Linux read\u547d\u4ee4\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u5305\u62ec\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002 \u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9 \u8981\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u9996\u5148\u9700\u8981\u6253\u5f00\u7ec8\u7aef\uff0c\u5e76\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u683c\u5f0f\u6765\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff1a read [-options] [variable] \u5176\u4e2d\uff0c-options\u4ee3\u8868\u5404\u79cd\u9009\u9879\uff0cvariable\u4ee3\u8868\u53d8\u91cf\u540d\u79f0\uff0c\u7528\u4e8e\u5b58\u50a8\u8bfb\u53d6\u7684\u6570\u636e\u3002 \u4ee3\u7801\u793a\u4f8b \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3aexample.txt\u7684\u6587\u672c\u6587\u4ef6\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a Hello, this is an example file. Welcome to the world of Linux. \u73b0\u5728\u6211\u4eec\u5c06\u4f7f\u7528read\u547d\u4ee4\u6765\u8bfb\u53d6\u8fd9\u4e2a\u6587\u4ef6\u7684\u5185\u5bb9\uff0c\u5e76\u5b58\u50a8\u5230\u53d8\u91cf\u4e2d\u3002\u5728\u7ec8\u7aef\u4e2d\u8f93\u5165\u4ee5\u4e0b\u547d\u4ee4\uff1a while IFS= read -r line; do echo “$line” done < example.txt \u6267\u884c\u4ee5\u4e0a\u547d\u4ee4\u540e\uff0c\u7ec8\u7aef\u4f1a\u8f93\u51fa\u6587\u4ef6example.txt\u7684\u5185\u5bb9\uff1a Hello, this is an example file. Welcome to the world of Linux. \u4e0a\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u4e2d\uff0cwhile\u5faa\u73af\u7528\u4e8e\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0cIFS=\u7528\u4e8e\u9632\u6b62read\u547d\u4ee4\u53bb\u9664\u884c\u4e2d\u7684\u7a7a\u683c\uff0c-r\u9009\u9879\u7528\u4e8e\u4fdd\u7559\u53cd\u659c\u6760\u5b57\u7b26\u7684\u539f\u59cb\u5f62\u5f0f\u3002 \u8bfb\u53d6\u6307\u5b9a\u884c \u6709\u65f6\u5019\u6211\u4eec\u53ea\u60f3\u8bfb\u53d6\u6587\u4ef6\u4e2d\u7684\u7279\u5b9a\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a read […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-51391","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/51391","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=51391"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/51391\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=51391"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=51391"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=51391"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}