{"id":206789,"date":"2025-06-12T11:32:43","date_gmt":"2025-06-12T03:32:43","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206789\/"},"modified":"2025-06-12T11:32:43","modified_gmt":"2025-06-12T03:32:43","slug":"go-%e5%91%bd%e4%bb%a4%e8%a1%8c%e5%b7%a5%e5%85%b7%ef%bc%9a%e7%ae%a1%e9%81%93%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206789\/","title":{"rendered":"Go \u547d\u4ee4\u884c\u5de5\u5177\uff1a\u7ba1\u9053\u6570\u636e"},"content":{"rendered":"

\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587
\n\u300aGo \u547d\u4ee4\u884c\u5de5\u5177\uff1a\u7ba1\u9053\u6570\u636e\u300b<\/span>\u7684\u5185\u5bb9\u4e2d\u5c06\u4f1a\u6d89\u53ca\u5230
\n<\/span>\u7b49\u7b49\u3002\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60
\nGOLANG<\/span>\u76f8\u5173\u77e5\u8bc6\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4ee5\u540e\u4f1a\u7ed9\u5927\u5bb6\u5e26\u6765\u66f4\u591a
\nGOLANG<\/span>\u76f8\u5173\u6587\u7ae0\uff0c\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u8fdb\u6b65\uff01\u4e0b\u9762\u5c31\u5f00\u59cb\u672c\u6587\u7684\u6b63\u5f0f\u5185\u5bb9~,
\n,unix \u56e0\u5021\u5bfc\u547d\u4ee4\u5e94\u8be5\u505a\u4e00\u4ef6\u4e8b\u5e76\u505a\u597d\u5b83\u7684\u7406\u5ff5\u800c\u95fb\u540d\u3002,\u590d\u6742\u7684\u6570\u636e\u5904\u7406\u548c\u8f6c\u6362\u64cd\u4f5c\u901a\u5e38\u53ef\u4ee5\u4f7f\u7528 shell \u7ba1\u9053\u8fd0\u7b97\u7b26\u5c06\u547d\u4ee4\u94fe\u63a5\u5728\u4e00\u8d77\u6765\u6267\u884c\uff0c\u4ee5\u4fbf\u4e00\u4e2a\u547d\u4ee4\u7684\u8f93\u51fa\u6210\u4e3a\u53e6\u4e00\u4e2a\u547d\u4ee4\u7684\u8f93\u5165\uff0c\u64cd\u4f5c\u548c\u8f6c\u6362\u6570\u636e\u4ee5\u5b9e\u73b0\u6240\u9700\u7684\u7ed3\u679c\u3002,\u4f8b\u5982\uff1a
\n
,\u4f7f\u7528 go\uff0c\u7a0b\u5e8f\u5458\u53ef\u4ee5\u521b\u5efa\u9ad8\u6548\u4e14\u9ad8\u6027\u80fd\u7684\u547d\u4ee4\u6765\u5904\u7406\u6570\u636e\u3002\u6211\u4eec\u5c06\u901a\u8fc7\u4ee5\u4e0b\u7247\u6bb5\u6765\u8ba8\u8bba\u8fd9\u4e00\u70b9\u3002,\u53ef\u7528\u4e8e\u7ba1\u9053\u64cd\u4f5c\u7684\u547d\u4ee4\u7684\u672c\u8d28\u662f\u4ece stdin \u8bfb\u53d6\u5e76\u5199\u5165 stdout\u3002,add-line-numbers.go
\n
,\u6b64\u793a\u4f8b\u4ece stdin \u4e00\u6b21\u8bfb\u53d6\u4e00\u884c\uff0c\u5e76\u5c06\u5176\u5199\u56de\u5230 stdout\uff0c\u6bcf\u884c\u90fd\u4ee5\u884c\u53f7\u4e3a\u524d\u7f00\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u4f7f\u7528\u7a0b\u5e8f\u6587\u4ef6\u672c\u8eab\u4f5c\u4e3a\u8f93\u5165\u6765\u751f\u6210\u7f16\u53f7\u7684\u8f93\u51fa\u3002
\n
,\u6b64\u793a\u4f8b\u4ece stdin \u4e00\u6b21\u8bfb\u53d6\u4e00\u884c\uff0cbase64 \u5bf9\u5176\u8fdb\u884c\u7f16\u7801\uff0c\u7136\u540e\u5c06\u5176\u5199\u56de\u5230 stdout\u3002
\n
,\u7531\u4e8e\u626b\u63cf\u5668\u4f1a\u5206\u5272\u6362\u884c\u7b26 (n) \u800c\u4e0d\u8fd4\u56de\u5b83\u4eec\uff0c\u56e0\u6b64\u6709\u5fc5\u8981\u5728\u5199\u5165\u6bcf\u4e00\u884c\u540e\u663e\u5f0f\u5199\u5165\u6362\u884c\u7b26\u3002
\n
,\u60a8\u53ef\u4ee5\u901a\u8fc7\u5c06\u7f16\u7801\u7ed3\u679c\u4f20\u8f93\u5230\u7cfb\u7edf base64 \u547d\u4ee4\uff08linux \u548c macos\uff09\u8fdb\u884c\u89e3\u7801\u6765\u786e\u8ba4\u6587\u672c\u662f\u5426\u6b63\u786e\u7f16\u7801\uff1a
\n
,\u8fd9\u7bc7\u6587\u7ae0\u6458\u5f55\u81ea\u6211\u7f16\u5199\u7684\u5173\u4e8e go \u6807\u51c6\u5e93\u529f\u80fd\u7684\u7b80\u77ed\u4ecb\u7ecd\u6027\u6307\u5357\uff0c\u8fd9\u4e9b\u529f\u80fd\u5bf9\u4e8e\u521b\u5efa\u547d\u4ee4\u884c\u5de5\u5177\u975e\u5e38\u6709\u7528\uff1ago for cli \u5e94\u7528\u7a0b\u5e8f\u548c\u5de5\u5177\u3002,\u4eca\u5929\u5173\u4e8e\u300aGo \u547d\u4ee4\u884c\u5de5\u5177\uff1a\u7ba1\u9053\u6570\u636e\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\u5728GOLANG\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,\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587
\n\u300aGo \u547d\u4ee4\u884c\u5de5\u5177\uff1a\u7ba1\u9053\u6570\u636e\u300b<\/span>\u7684\u5185\u5bb9\u4e2d\u5c06\u4f1a\u6d89\u53ca\u5230
\n<\/span>\u7b49\u7b49\u3002\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60
\nGOLANG<\/span>\u76f8\u5173\u77e5\u8bc6\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4ee5\u540e\u4f1a\u7ed9\u5927\u5bb6\u5e26\u6765\u66f4\u591a
\nGOLANG<\/span>\u76f8\u5173\u6587\u7ae0\uff0c\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u8fdb\u6b65\uff01\u4e0b\u9762\u5c31\u5f00\u59cb\u672c\u6587\u7684\u6b63\u5f0f\u5185\u5bb9~,
\n<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> Go \u547d\u4ee4\u884c\u5de5\u5177\uff1a\u7ba1\u9053\u6570\u636e<\/span><\/p>\n

Go \u547d\u4ee4\u884c\u5de5\u5177\uff1a\u7ba1\u9053\u6570\u636e<\/h1>\n

\u6765\u6e90\uff1adev.to<\/span>
\n2024-11-23 16:30:52<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587\u300aGo \u547d\u4ee4\u884c\u5de5\u5177\uff1a\u7ba1\u9053\u6570\u636e\u300b<\/span>\u7684\u5185\u5bb9\u4e2d\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u3002\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60GOLANG<\/span>\u76f8\u5173\u77e5\u8bc6\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4ee5\u540e\u4f1a\u7ed9\u5927\u5bb6\u5e26\u6765\u66f4\u591aGOLANG<\/span>\u76f8\u5173\u6587\u7ae0\uff0c\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u8fdb\u6b65\uff01\u4e0b\u9762\u5c31\u5f00\u59cb\u672c\u6587\u7684\u6b63\u5f0f\u5185\u5bb9~<\/p>\n

<\/p>\n

unix \u56e0\u5021\u5bfc\u547d\u4ee4\u5e94\u8be5\u505a\u4e00\u4ef6\u4e8b\u5e76\u505a\u597d\u5b83\u7684\u7406\u5ff5\u800c\u95fb\u540d\u3002<\/p>\n

\u590d\u6742\u7684\u6570\u636e\u5904\u7406\u548c\u8f6c\u6362\u64cd\u4f5c\u901a\u5e38\u53ef\u4ee5\u4f7f\u7528 shell \u7ba1\u9053\u8fd0\u7b97\u7b26\u5c06\u547d\u4ee4\u94fe\u63a5\u5728\u4e00\u8d77\u6765\u6267\u884c\uff0c\u4ee5\u4fbf\u4e00\u4e2a\u547d\u4ee4\u7684\u8f93\u51fa\u6210\u4e3a\u53e6\u4e00\u4e2a\u547d\u4ee4\u7684\u8f93\u5165\uff0c\u64cd\u4f5c\u548c\u8f6c\u6362\u6570\u636e\u4ee5\u5b9e\u73b0\u6240\u9700\u7684\u7ed3\u679c\u3002<\/p>\n

\u4f8b\u5982\uff1a<\/p>\n

# sort file names.\nls | sort\n\n# count files.\nls -l | count -l\n\n# print out unique file extensions.\n#  1. list all files that have extensions\n#  2. transform the data (discard everything but extensions)\n#  3. sort the list (data must be sorted to identify duplicates)\n#  4. filter out duplicates\n#  5. browse the results\nls *.* | sed 's\/.*\\.\/\/' | sort | uniq | less\n<\/pre>\n
\u4f7f\u7528 go\uff0c\u7a0b\u5e8f\u5458\u53ef\u4ee5\u521b\u5efa\u9ad8\u6548\u4e14\u9ad8\u6027\u80fd\u7684\u547d\u4ee4\u6765\u5904\u7406\u6570\u636e\u3002\u6211\u4eec\u5c06\u901a\u8fc7\u4ee5\u4e0b\u7247\u6bb5\u6765\u8ba8\u8bba\u8fd9\u4e00\u70b9\u3002<\/p>\n
 \u6dfb\u52a0\u884c\u53f7\u5230\u8f93\u51fa <\/h2>\n
\u53ef\u7528\u4e8e\u7ba1\u9053\u64cd\u4f5c\u7684\u547d\u4ee4\u7684\u672c\u8d28\u662f\u4ece stdin \u8bfb\u53d6\u5e76\u5199\u5165 stdout\u3002<\/p>\n
add-line-numbers.go<\/p>\n
package main\n\nimport (\n    \"bufio\"\n    \"fmt\"\n    \"os\"\n)\n\nfunc main() {\n\n    \/\/ buffered input that splits input on lines.\n    input := bufio.newscanner(os.stdin)\n\n    \/\/ buffered output.\n    output := bufio.newwriter(os.stdout)\n\n    lineno := 0\n\n    \/\/ scan until eof (no more input).\n    for input.scan() {\n        text := input.text()\n        lineno++\n        s := fmt.sprintf(\"%03d %s\\n\", lineno, text)\n\n        \/\/ it would be simpler to just use fmt.println,\n        \/\/ but want to emphasize piping stdin to stdout\n        \/\/ explicitly.\n        \/\/ intentionally ignoring return values.\n        _, _ = output.writestring(s)\n\n    }\n\n    \/\/ always explicitly flush remaining buffered output.\n    _ = output.flush()\n}\n<\/pre>\n
\u6b64\u793a\u4f8b\u4ece stdin \u4e00\u6b21\u8bfb\u53d6\u4e00\u884c\uff0c\u5e76\u5c06\u5176\u5199\u56de\u5230 stdout\uff0c\u6bcf\u884c\u90fd\u4ee5\u884c\u53f7\u4e3a\u524d\u7f00\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u4f7f\u7528\u7a0b\u5e8f\u6587\u4ef6\u672c\u8eab\u4f5c\u4e3a\u8f93\u5165\u6765\u751f\u6210\u7f16\u53f7\u7684\u8f93\u51fa\u3002<\/p>\n
$ cat add-line-numbers.go | go run add-line-numbers.go\n001 package main\n002 \n003 import (\n004     \"bufio\"\n005     \"fmt\"\n006     \"os\"\n007 )\n008 \n009 func main() {\n010 \n011     \/\/ buffered input that splits input on lines.\n012     input := bufio.newscanner(os.stdin)\n013 \n014     \/\/ buffered output.\n015     output := bufio.newwriter(os.stdout)\n016 \n017     lineno := 0\n018 \n019     \/\/ scan until eof (no more input).\n020     for input.scan() {\n021         text := input.text()\n022         lineno++\n023         s := fmt.sprintf(\"%03d %s\\n\", lineno, text)\n024 \n025         \/\/ it would be simpler to just use fmt.println,\n026         \/\/ but want to emphasize piping stdin to stdout\n027         \/\/ explicitly.\n028         \/\/ intentionally ignoring return values.\n029         _, _ = output.writestring(s)\n030 \n031     }\n032 \n033     \/\/ always explicitly flush remaining buffered output.\n034     _ = output.flush()\n035 \n036 }\n<\/pre>\n
 base64\u7f16\u7801\u8f93\u5165 <\/h2>\n
\u6b64\u793a\u4f8b\u4ece stdin \u4e00\u6b21\u8bfb\u53d6\u4e00\u884c\uff0cbase64 \u5bf9\u5176\u8fdb\u884c\u7f16\u7801\uff0c\u7136\u540e\u5c06\u5176\u5199\u56de\u5230 stdout\u3002<\/p>\n
package main\n\nimport (\n    \"bufio\"\n    \"encoding\/base64\"\n    \"os\"\n)\n\nfunc main() {\n\n    \/\/ buffered input that splits input on lines.\n    input := bufio.newscanner(os.stdin)\n\n    \/\/ base64 encoder\/writer.\n    encoder := base64.newencoder(\n        base64.stdencoding,\n        os.stdout)\n\n    \/\/ scan until eof (no more input).\n    for input.scan() {\n        bytes := input.bytes()\n        _, _ = encoder.write(bytes)\n        _, _ = encoder.write([]byte{'\\n'})\n    }\n\n    \/\/ close the encoder and ensure it flushes remaining output\n    _ = encoder.close()\n}\n<\/pre>\n
\u7531\u4e8e\u626b\u63cf\u5668\u4f1a\u5206\u5272\u6362\u884c\u7b26 (n) \u800c\u4e0d\u8fd4\u56de\u5b83\u4eec\uff0c\u56e0\u6b64\u6709\u5fc5\u8981\u5728\u5199\u5165\u6bcf\u4e00\u884c\u540e\u663e\u5f0f\u5199\u5165\u6362\u884c\u7b26\u3002<\/p>\n
$ cat base64-encode.go | go run base64-encode.go\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\n<\/pre>\n
\u60a8\u53ef\u4ee5\u901a\u8fc7\u5c06\u7f16\u7801\u7ed3\u679c\u4f20\u8f93\u5230\u7cfb\u7edf base64 \u547d\u4ee4\uff08linux \u548c macos\uff09\u8fdb\u884c\u89e3\u7801\u6765\u786e\u8ba4\u6587\u672c\u662f\u5426\u6b63\u786e\u7f16\u7801\uff1a<\/p>\n
$ cat base64-encode.go | go run base64-encode.go | base64 -D\npackage main\n\nimport (\n    \"bufio\"\n    \"encoding\/base64\"\n    \"os\"\n)\n\nfunc main() {\n\n    \/\/ Buffered input that splits input on lines.\n    input := bufio.NewScanner(os.Stdin)\n\n    \/\/ Base64 Encoder\/writer.\n    encoder := base64.NewEncoder(\n        base64.StdEncoding,\n        os.Stdout)\n\n    \/\/ Scan until EOF (no more input).\n    for input.Scan() {\n        bytes := input.Bytes()\n        _, _ = encoder.Write(bytes)\n        _, _ = encoder.Write([]byte{'\\n'})\n    }\n\n    \/\/ Close the encoder and ensure it flushes remaining output\n    _ = encoder.Close()\n}\n<\/pre>\n
\u8fd9\u7bc7\u6587\u7ae0\u6458\u5f55\u81ea\u6211\u7f16\u5199\u7684\u5173\u4e8e go \u6807\u51c6\u5e93\u529f\u80fd\u7684\u7b80\u77ed\u4ecb\u7ecd\u6027\u6307\u5357\uff0c\u8fd9\u4e9b\u529f\u80fd\u5bf9\u4e8e\u521b\u5efa\u547d\u4ee4\u884c\u5de5\u5177\u975e\u5e38\u6709\u7528\uff1ago for cli \u5e94\u7528\u7a0b\u5e8f\u548c\u5de5\u5177\u3002<\/p>\n
\u4eca\u5929\u5173\u4e8e\u300aGo \u547d\u4ee4\u884c\u5de5\u5177\uff1a\u7ba1\u9053\u6570\u636e\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\u5728GOLANG\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
 \u7248\u672c\u58f0\u660e \u672c\u6587\u8f6c\u8f7d\u4e8e\uff1adev.to \u5982\u6709\u4fb5\u72af\uff0c\u8bf7\u8054\u7cfb \u5220\u9664  <\/p>\n
\n
\n <\/dt>\n
\n   win10\u5783\u573e\u8f6f\u4ef6\u600e\u4e48\u963b\u6b62\u5b89\u88c5 win10\u7cfb\u7edf\u963b\u6b62\u5783\u573e\u8f6f\u4ef6\u5b89\u88c5\u6559\u7a0b\n <\/dd>\n<\/dl>\n
\n
\n <\/dt>\n
\n   Go \u5207\u7247\u64cd\u4f5c\u7b26 [:5:5] \u7684\u542b\u4e49\u662f\u4ec0\u4e48\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587 \u300a...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-206789","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206789","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=206789"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206789\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}