{"id":52381,"date":"2024-12-03T10:23:14","date_gmt":"2024-12-03T02:23:14","guid":{"rendered":"https:\/\/fwq.ai\/blog\/52381\/"},"modified":"2024-12-03T10:23:14","modified_gmt":"2024-12-03T02:23:14","slug":"linux%e4%b8%adstream%e7%9a%84%e5%90%ab%e4%b9%89%e6%98%af%e4%bb%80%e4%b9%88","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/52381\/","title":{"rendered":"linux\u4e2dstream\u7684\u542b\u4e49\u662f\u4ec0\u4e48"},"content":{"rendered":"

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

linux\u4e2dstream\u7684\u542b\u4e49\u662f\u4ec0\u4e48<\/h1>\n

\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u6211\u4eec\u8981\u52aa\u529b\u5b66\u4e60\u5566\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u300alinux\u4e2dstream\u7684\u542b\u4e49\u662f\u4ec0\u4e48\u300b<\/span>\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4e0b\u6587\u4e2d\u7684\u5185\u5bb9\u6211\u4eec\u4e3b\u8981\u4f1a\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5728\u9605\u8bfb\u672c\u6587\u8fc7\u7a0b\u4e2d\u6709\u9047\u5230\u4e0d\u6e05\u695a\u7684\u5730\u65b9\uff0c\u6b22\u8fce\u7559\u8a00\u5440\uff01\u6211\u4eec\u4e00\u8d77\u8ba8\u8bba\uff0c\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n<\/p>\n

\n

\u5728linux\u4e2d\uff0cstream\u662f\u6570\u636e\u6d41\u7684\u610f\u601d\uff0c\u5c31\u662f\u6309\u4e00\u5b9a\u987a\u5e8f\u8bfb\u53d6\u7684\u4e00\u4e32\u6570\u636e\uff0c\u6240\u4ee5\u6570\u636e\u6d41\u7684\u65b9\u5411\u5c31\u662f\u6570\u636e\u6d41\u7684\u8bfb\u53d6\u987a\u5e8f\u3002Linux\u7cfb\u7edf\u628a\u6570\u636e\u8bfb\u53d6\u540e\u8f93\u51fa\u7684\u7ed3\u679c\u5bfc\u5165\u5230\u5176\u4ed6\u6587\u4ef6\u4e2d\u7684\u8fc7\u7a0b\u79f0\u4e3a\u91cd\u5b9a\u5411\u6570\u636e\u6d41\u3002Linux\u4e0b\u8f93\u5165\u4e00\u6bb5\u547d\u4ee4\u5e76\u8fd0\u884c\u4ee5\u540e\uff0c\u5c4f\u5e55\u91cc\u4f1a\u663e\u793a\u4e24\u79cd\u7ed3\u679c\uff1a\u8fd0\u884c\u6210\u529f\u7ed3\u679c\u5373\u6807\u51c6\u8f93\u51fa\u3001\u8fd0\u884c\u5931\u8d25\u7ed3\u679c\u5373\u6807\u51c6\u9519\u8bef\u8f93\u51fa\uff1b\u5982\u679c\u4e0d\u505a\u5904\u7406\uff0c\u5b83\u4eec\u90fd\u4f1a\u663e\u793a\u5728\u5c4f\u5e55\u4e0a\uff0c\u800c\u901a\u8fc7\u6570\u636e\u6d41\u91cd\u5b9a\u5411\u5c31\u53ef\u5c06\u5176\u50a8\u5b58\u5230\u5176\u4ed6\u7684\u6587\u4ef6\u4e2d\u3002<\/p>\n<\/blockquote>\n

\u5728linux\u4e2d\uff0cstream\u662f\u6570\u636e\u6d41\u7684\u610f\u601d\u3002<\/strong><\/p>\n

stream\uff08\u6570\u636e\u6d41\uff09\u662f\u4ec0\u4e48\u610f\u601d<\/strong><\/h3>\n

stream\uff08\u6570\u636e\u6d41\uff09\u5c31\u662f\u6309\u4e00\u5b9a\u987a\u5e8f\u8bfb\u53d6\u7684\u4e00\u4e32\u6570\u636e\uff0c\u6240\u4ee5\u6570\u636e\u6d41\u7684\u65b9\u5411\u5c31\u662f\u6570\u636e\u6d41\u7684\u8bfb\u53d6\u987a\u5e8f\u3002<\/p>\n

\u6570\u636e\u6d41\u6700\u521d\u662f\u901a\u4fe1\u9886\u57df\u4f7f\u7528\u7684\u6982\u5ff5\uff0c\u4ee3\u8868\u4f20\u8f93\u4e2d\u6240\u4f7f\u7528\u7684\u4fe1\u606f\u7684\u6570\u5b57\u7f16\u7801\u4fe1\u53f7\u5e8f\u5217\u3002\u8fd9\u4e2a\u6982\u5ff5\u6700\u521d\u57281998\u5e74\u7531Henzinger\u5728\u6587\u732e87\u4e2d\u63d0\u51fa\uff0c\u4ed6\u5c06\u6570\u636e\u6d41\u5b9a\u4e49\u4e3a\u201c\u53ea\u80fd\u4ee5\u4e8b\u5148\u89c4\u5b9a\u597d\u7684\u987a\u5e8f\u88ab\u8bfb\u53d6\u4e00\u6b21\u7684\u6570\u636e\u7684\u4e00\u4e2a\u5e8f\u5217\u201d\u3002<\/p>\n

Linux\u7cfb\u7edf\u91cd\u5b9a\u5411\u6570\u636e\u6d41\u5c31\u662f\u628a\u6570\u636e\u8bfb\u53d6\u540e\u8f93\u51fa\u7684\u7ed3\u679c\u5bfc\u5165\u5230\u5176\u4ed6\u6587\u4ef6\u4e2d\u3002<\/p>\n

Linux\u6570\u636e\u6d41\u91cd\u5b9a\u5411<\/strong><\/h3>\n

\u6570\u636e\u6d41\u91cd\u5b9a\u5411\u7b80\u5355\u6765\u8bf4\u5c31\u662f\u5c06\u67d0\u6761\u547d\u4ee4\u7684\u8f93\u5165\u6570\u636e\u6765\u6e90\u6216\u8f93\u51fa\u6570\u636e\u5b9a\u4f4d\u5230\u5176\u4ed6\u7684\u6587\u4ef6\u3002Linux\u4e0b\u4e00\u5207\u7686\u6587\u4ef6\u3002\u8fd9\u91cc\u7684\u6587\u4ef6\u53ef\u4ee5\u662f\u8bbe\u5907\u6587\u4ef6\u3001\u666e\u901a\u6587\u4ef6\u7b49\u3002<\/p>\n

1\u3001stdin stdout stderr<\/strong><\/p>\n

\n

stdin<\/code>:\u6807\u51c6\u8f93\u5165\u3002\u6307\u7684\u662f\u4e3a\u547d\u4ee4\u8fd0\u884c\u6240\u63d0\u4f9b\u7684\u4e00\u4e9b\u4fe1\u606f\u3002
stdout<\/code>:\u6807\u51c6\u8f93\u51fa\u3002\u6307\u7684\u662f\u547d\u4ee4\u6267\u884c\u6240\u8fd4\u56de\u7684\u6b63\u786e\u4fe1\u606f\u3002
stderr<\/code>:\u6807\u51c6\u9519\u8bef\u8f93\u51fa\u3002\u6307\u7684\u662f\u547d\u4ee4\u6267\u884c\u5931\u8d25\u540e\u6240\u8fd4\u56de\u7684\u9519\u8bef\u4fe1\u606f\u3002<\/p>\n<\/blockquote>\n

\u8fd9\u4e09\u8005\u4e0e\u547d\u4ee4\u7684\u5173\u7cfb\u901a\u5e38\u5982\u4e0b\uff1a<\/p>\n

stdin<\/p>\n

stderr<\/p>\n

stdout<\/p>\n

File<\/p>\n

Command<\/p>\n

Screen\/File<\/p>\n

Screen\/File<\/p>\n

\u5728Linux\u73af\u5883\u4e0b\uff0c\u6211\u4eec\u8f93\u5165\u4e00\u6bb5\u547d\u4ee4\u5e76\u8fd0\u884c\u4ee5\u540e\uff0c\u5c4f\u5e55\u91cc\u4f1a\u663e\u793a\u4e24\u79cd\u7ed3\u679c\uff1a\u8fd0\u884c\u6210\u529f\u7ed3\u679c\u5373\u6807\u51c6\u8f93\u51fa\u3001\u8fd0\u884c\u5931\u8d25\u7ed3\u679c\u5373\u6807\u51c6\u9519\u8bef\u8f93\u51fa\u3002<\/p>\n

    \n
  • \n

    \u6807\u51c6\u8f93\u51fa(STDOUT)\uff1a Standard output\uff0c\u6307\u7684\u662f\u547d\u4ee4\u6267\u884c\u6240\u8fd4\u56de\u7684\u6b63\u786e\u4fe1\u606f\u3002<\/p>\n<\/li>\n

  • \n

    \u6807\u51c6\u9519\u8bef\u8f93\u51fa(STDERR)\uff1a Standard error output\uff0c\u6307\u7684\u662f\u547d\u4ee4\u6267\u884c\u6240\u8fd4\u56de\u7684\u9519\u8bef\u4fe1\u606f\u3002<\/p>\n<\/li>\n<\/ul>\n

    \u5982\u679c\u4e0d\u5bf9STDOUT\u548cSTDERR\u505a\u5904\u7406\uff0c\u4ed6\u4eec\u90fd\u4f1a\u663e\u793a\u5728\u5c4f\u5e55\u4e0a\uff0c\u901a\u8fc7\u6570\u636e\u6d41\u91cd\u5b9a\u5411\u5c31\u53ef\u4ee5\u5c06\u5176\u50a8\u5b58\u5230\u5176\u4ed6\u7684\u6587\u4ef6\u4e2d\uff0c\u800c\u5c06\u5176\u50a8\u5b58\u5728\u6587\u4ef6\u4e2d\u7684\u7279\u6b8a\u5b57\u7b26\u6709\uff1a<\/p>\n

      \n
    • \n

      \u6807\u51c6\u8f93\u5165stin\uff1a\u4ee3\u7801\u4e3a0\uff0c\u4f7f\u7528<<\/code>\u6216<<<\/code><\/p>\n<\/li>\n

    • \n

      \u6807\u51c6\u8f93\u51fastout\uff1a\u4ee3\u7801\u4e3a1\uff0c\u4f7f\u7528><\/code>\u6216>><\/code><\/p>\n<\/li>\n

    • \n

      \u6807\u51c6\u9519\u8bef\u8f93\u51fastderr\uff1a\u4ee3\u7801\u4e3a2\uff0c\u4f7f\u75282><\/code>\u62162>><\/code><\/p>\n<\/li>\n<\/ul>\n

      2\u3001\u6570\u636e\u6d41\u91cd\u5b9a\u5411\u7684\u4f7f\u7528<\/strong><\/p>\n

        \n
      • \n

        stdout<\/code>\uff1a\u6807\u51c6\u8f93\u51fa\u91cd\u5b9a\u5411\u3002\u8fd9\u91cc\u91cd\u5b9a\u5411\u7684\u662f\u6b63\u786e\u8f93\u51fa\u3002<\/p>\n<\/li>\n<\/ul>\n

        find \/ -name '.bashrc' > ~\/out_right<\/pre>\n
        \u8be5\u547d\u4ee4\u5c06\u6b63\u786e\u8f93\u51fa\u5b9a\u5411\u8f93\u5165\u5230\u6587\u4ef6~\/out_right<\/code>\u3002\u5982\u679c~\/out_right<\/code>\u4e0d\u5b58\u5728\uff0c\u5219\u81ea\u52a8\u521b\u5efa\u3002\u56e0\u4e3a\u6ca1\u5bf9\u9519\u8bef\u4fe1\u606f\u5904\u7406\uff0c\u9519\u8bef\u8f93\u51fa\u9ed8\u8ba4\u8f93\u51fa\u5230\u5c4f\u5e55\u7ec8\u7aef\u4e0a\uff0c\u6b64\u65f6\u7ec8\u7aef\u53ea\u4f1a\u663e\u793a\u9519\u8bef\u8f93\u51fa\u3002<\/p>\n
          \n
        • \n
          stderr<\/code>\uff1a\u6807\u51c6\u9519\u8bef\u8f93\u51fa\u91cd\u5b9a\u5411\u3002\u8fd9\u91cc\u91cd\u5b9a\u5411\u7684\u662f\u9519\u8bef\u8f93\u51fa\u3002<\/p>\n<\/li>\n<\/ul>\n
          find \/ -name '.bashrc' 2> ~\/out_error<\/pre>\n
          \u8be5\u547d\u4ee4\u5c06\u9519\u8bef\u8f93\u51fa\u5b9a\u5411\u8f93\u5165\u5230\u6587\u4ef6~\/out_error<\/code>\u3002\u5982\u679c~\/out_error<\/code>\u4e0d\u5b58\u5728\uff0c\u5219\u81ea\u52a8\u521b\u5efa\u3002\u56e0\u4e3a\u6ca1\u5bf9\u6b63\u786e\u4fe1\u606f\u5904\u7406\uff0c\u6b63\u786e\u8f93\u51fa\u9ed8\u8ba4\u8f93\u51fa\u5230\u5c4f\u5e55\u7ec8\u7aef\u4e0a\uff0c\u6b64\u65f6\u7ec8\u7aef\u53ea\u4f1a\u663e\u793a\u6b63\u786e\u8f93\u51fa(\u5982\u679c\u6ca1\u627e\u5230\u6307\u5b9a\u6587\u4ef6\uff0c\u5c4f\u5e55\u6ca1\u6709\u8f93\u51fa)\u3002<\/p>\n
            \n
          • \n
            stdin<\/code>\uff1a\u4e00\u822c\u4f7f\u7528\u6807\u51c6\u8f93\u5165\u6765\u66ff\u6362\u952e\u76d8\u8f93\u5165\u3002<\/p>\n<\/li>\n<\/ul>\n
            cat > catfile < ~\/.bashrc<\/pre>\n
            cat<\/code>\u547d\u4ee4\u540e\u4e0d\u63a5\u4efb\u4f55\u53c2\u6570\uff0ccat\u4f1a\u4ece\u952e\u76d8\u8bfb\u53d6\u6570\u636e\u3002\u4f7f\u7528\u6807\u51c6\u8f93\u5165\uff0c\u5c06\u8f93\u5165\u6765\u6e90\u5b9a\u5411\u5230\u6587\u4ef6~\/.bashrc<\/code>\u3002\u7136\u540e\u901a\u8fc7><\/code>\u5c06\u6807\u51c6\u8f93\u51fa\u5b9a\u4f4d\u5230catfile<\/code>\u6587\u4ef6\u3002cat<\/code>\u662f\u67e5\u770b\u6587\u4ef6\u7684\u547d\u4ee4\uff0c\u8fd9\u91cc\u76f4\u63a5\u8bfb\u53d6\u6587\u4ef6~\/.bashrc<\/code>\u7136\u540e\u5c06\u5176\u8f93\u51fa\u5230catfile<\/code>\u3002<\/p>\n
            3\u3001<\/strong>>>,2>>,<<<\/strong><\/code><\/p>\n
              \n
            • \n
              >><\/code>(\u7d2f\u52a0<\/strong>\uff09\uff1a\u9644\u52a0\u6807\u51c6\u8f93\u51fa\u3002cmd > file1<\/code>\uff0c\u547d\u4ee4cmd<\/code>\u5c06stdout<\/code>\u8f93\u51fa\u5230file1<\/code>\u4e2d\uff0c\u5982\u679cfiel1<\/code>\u6b64\u524d\u5b58\u5728\uff0c\u4e14\u6709\u6570\u636e\uff0c\u90a3\u4e48file1<\/code>\u4f1a\u4e8b\u5148\u88ab\u6e05\u7a7a\uff0c\u7136\u540e\u5199\u5165stdout<\/code>\u3002\u800c\u4f7f\u7528\u547d\u4ee4cmd >> file1<\/code>\uff0c\u4e0d\u4f1a\u9884\u5148\u6e05\u7a7afile1<\/code>\u6587\u4ef6\uff0c\u800c\u662f\u76f4\u63a5\u5728\u6587\u4ef6\u672b\u5c3e\u52a0\u4e0a\u8f93\u5165\u7684\u6570\u636e\u3002<\/p>\n<\/li>\n
            • \n
              2>><\/code>\uff08\u7d2f\u52a0<\/strong>\uff09\uff1a\u9644\u52a0\u6807\u51c6\u9519\u8bef\u8f93\u51fa\u3002\u4e0e>><\/code>\u76f8\u4f3c\u3002<\/p>\n<\/li>\n
            • \n
              <<<\/code>\uff08\u6307\u5b9a\u7ed3\u675f\u5173\u952e\u5b57<\/strong>)\uff1a\u540e\u63a5\u7ed3\u675f\u7684\u8f93\u5165\u5b57\u7b26<\/code>\u3002\u5173\u952e\u5b57\u5fc5\u987b\u72ec\u5360\u4e00\u884c\uff0c\u5426\u5219\u65e0\u6548\u3002<\/p>\n<\/li>\n<\/ul>\n
              cat > catfile << \"eof\"  #\u8fd9\u91cc\u5173\u952e\u5b57\u4e3aeof\n> This is a test.\n> Ok now stop\n> eof  #\u8f93\u5165eof(\u5e76\u56de\u8f66)\u7ed3\u675f\u672c\u6b21\u8f93\u5165<\/pre>\n
              4\u3001 <\/strong>stdout<\/code>\u4e0estderr<\/code>\u7edf\u4e00\u5904\u7406<\/strong><\/p>\n
              \u6709\u65f6\uff0c\u6211\u4eec\u9700\u8981\u5c06stdout<\/code>\u4e0estderr<\/code>\u90fd\u4fdd\u5b58\u5728\u540c\u4e00\u4e2a\u6587\u4ef6\u4e2d\u4e00\u904d\u4ee5\u540e\u67e5\u770b\u3002<\/p>\n
              \u57fa\u672c\u601d\u8def\uff1a<\/p>\n
              \n
              \u5c06stderr<\/code>\u91cd\u5b9a\u5411\u4e3astdout<\/code>\uff0c\u7136\u540e\u901a\u8fc7stdout<\/code>\u4e00\u8d77\u91cd\u5b9a\u5411\u3002<\/p>\n<\/blockquote>\n
              \u5982\u4e0b\u6848\u4f8b\uff1a<\/p>\n
              find \/ -name .bashrc > list 2> list #\u8be5\u8bed\u53e5\u9519\u8bef\uff0c\u67e5\u770b\u751f\u6210\u7684list\uff0c\u53d1\u73b0\u4e0d\u662f\u9884\u671f\u7ed3\u679c\nfind \/ -name .bashrc > list 2>&1 #\u6b63\u786e\nfind \/ -name .bashrc &> list #\u6b63\u786e<\/pre>\n
              \u5b9e\u73b0\u65b9\u6cd5\u4e0d\u6b62\u4e00\u79cd\uff0c\u6211\u4eec\u53d6\u8f83\u597d\u7406\u89e3\u7684\u5199\u6cd5find \/ -name .bashrc > list 2>&1<\/code>\u3002\u8fd9\u6bb5\u4ee3\u7801\u4e2d\u76842>&1<\/code>\u53ef\u4ee5\u7406\u89e3\u4e3a\uff0c\u5c06\u6807\u51c6\u9519\u8bef\u8f93\u51fa(\u4ee3\u7801\u4e3a2)\u91cd\u5b9a\u5411\u4e3a\u6807\u51c6\u8f93\u51fa(\u4ee3\u7801\u4e3a1)\u3002\u7136\u540e> list<\/code>\u5c06\u6807\u51c6\u8f93\u51fa\u91cd\u5b9a\u5411\u5230\u6587\u4ef6list<\/code>\u3002\u56e0\u4e3a\u6807\u51c6\u9519\u8bef\u8f93\u51fa\u88ab\u5b9a\u5411\u4e3a\u6807\u51c6\u8f93\u51fa\uff0c\u6240\u4ee5\u6700\u540e\u6240\u6709\u8f93\u51fa\u90fd\u88ab\u5b9a\u5411\u5230\u6587\u4ef6list<\/code>\u4e2d\u3002<\/p>\n
              \u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300alinux\u4e2dstream\u7684\u542b\u4e49\u662f\u4ec0\u4e48\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8eLinux,Stream\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
              linux\u4e2dstream\u7684\u542b\u4e49\u662f\u4ec0\u4e48 \u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u6211\u4eec\u8981\u52aa\u529b\u5b66\u4e60\u5566\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u300alinux\u4e2dstream\u7684\u542b\u4e49\u662f\u4ec0\u4e48\u300b\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4e0b\u6587\u4e2d\u7684\u5185\u5bb9\u6211\u4eec\u4e3b\u8981\u4f1a\u6d89\u53ca\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5728\u9605\u8bfb\u672c\u6587\u8fc7\u7a0b\u4e2d\u6709\u9047\u5230\u4e0d\u6e05\u695a\u7684\u5730\u65b9\uff0c\u6b22\u8fce\u7559\u8a00\u5440\uff01\u6211\u4eec\u4e00\u8d77\u8ba8\u8bba\uff0c\u4e00\u8d77\u5b66\u4e60\uff01 \u5728linux\u4e2d\uff0cstream\u662f\u6570\u636e\u6d41\u7684\u610f\u601d\uff0c\u5c31\u662f\u6309\u4e00\u5b9a\u987a\u5e8f\u8bfb\u53d6\u7684\u4e00\u4e32\u6570\u636e\uff0c\u6240\u4ee5\u6570\u636e\u6d41\u7684\u65b9\u5411\u5c31\u662f\u6570\u636e\u6d41\u7684\u8bfb\u53d6\u987a\u5e8f\u3002Linux\u7cfb\u7edf\u628a\u6570\u636e\u8bfb\u53d6\u540e\u8f93\u51fa\u7684\u7ed3\u679c\u5bfc\u5165\u5230\u5176\u4ed6\u6587\u4ef6\u4e2d\u7684\u8fc7\u7a0b\u79f0\u4e3a\u91cd\u5b9a\u5411\u6570\u636e\u6d41\u3002Linux\u4e0b\u8f93\u5165\u4e00\u6bb5\u547d\u4ee4\u5e76\u8fd0\u884c\u4ee5\u540e\uff0c\u5c4f\u5e55\u91cc\u4f1a\u663e\u793a\u4e24\u79cd\u7ed3\u679c\uff1a\u8fd0\u884c\u6210\u529f\u7ed3\u679c\u5373\u6807\u51c6\u8f93\u51fa\u3001\u8fd0\u884c\u5931\u8d25\u7ed3\u679c\u5373\u6807\u51c6\u9519\u8bef\u8f93\u51fa\uff1b\u5982\u679c\u4e0d\u505a\u5904\u7406\uff0c\u5b83\u4eec\u90fd\u4f1a\u663e\u793a\u5728\u5c4f\u5e55\u4e0a\uff0c\u800c\u901a\u8fc7\u6570\u636e\u6d41\u91cd\u5b9a\u5411\u5c31\u53ef\u5c06\u5176\u50a8\u5b58\u5230\u5176\u4ed6\u7684\u6587\u4ef6\u4e2d\u3002 \u5728linux\u4e2d\uff0cstream\u662f\u6570\u636e\u6d41\u7684\u610f\u601d\u3002 stream\uff08\u6570\u636e\u6d41\uff09\u662f\u4ec0\u4e48\u610f\u601d stream\uff08\u6570\u636e\u6d41\uff09\u5c31\u662f\u6309\u4e00\u5b9a\u987a\u5e8f\u8bfb\u53d6\u7684\u4e00\u4e32\u6570\u636e\uff0c\u6240\u4ee5\u6570\u636e\u6d41\u7684\u65b9\u5411\u5c31\u662f\u6570\u636e\u6d41\u7684\u8bfb\u53d6\u987a\u5e8f\u3002 \u6570\u636e\u6d41\u6700\u521d\u662f\u901a\u4fe1\u9886\u57df\u4f7f\u7528\u7684\u6982\u5ff5\uff0c\u4ee3\u8868\u4f20\u8f93\u4e2d\u6240\u4f7f\u7528\u7684\u4fe1\u606f\u7684\u6570\u5b57\u7f16\u7801\u4fe1\u53f7\u5e8f\u5217\u3002\u8fd9\u4e2a\u6982\u5ff5\u6700\u521d\u57281998\u5e74\u7531Henzinger\u5728\u6587\u732e87\u4e2d\u63d0\u51fa\uff0c\u4ed6\u5c06\u6570\u636e\u6d41\u5b9a\u4e49\u4e3a\u201c\u53ea\u80fd\u4ee5\u4e8b\u5148\u89c4\u5b9a\u597d\u7684\u987a\u5e8f\u88ab\u8bfb\u53d6\u4e00\u6b21\u7684\u6570\u636e\u7684\u4e00\u4e2a\u5e8f\u5217\u201d\u3002 Linux\u7cfb\u7edf\u91cd\u5b9a\u5411\u6570\u636e\u6d41\u5c31\u662f\u628a\u6570\u636e\u8bfb\u53d6\u540e\u8f93\u51fa\u7684\u7ed3\u679c\u5bfc\u5165\u5230\u5176\u4ed6\u6587\u4ef6\u4e2d\u3002 Linux\u6570\u636e\u6d41\u91cd\u5b9a\u5411 \u6570\u636e\u6d41\u91cd\u5b9a\u5411\u7b80\u5355\u6765\u8bf4\u5c31\u662f\u5c06\u67d0\u6761\u547d\u4ee4\u7684\u8f93\u5165\u6570\u636e\u6765\u6e90\u6216\u8f93\u51fa\u6570\u636e\u5b9a\u4f4d\u5230\u5176\u4ed6\u7684\u6587\u4ef6\u3002Linux\u4e0b\u4e00\u5207\u7686\u6587\u4ef6\u3002\u8fd9\u91cc\u7684\u6587\u4ef6\u53ef\u4ee5\u662f\u8bbe\u5907\u6587\u4ef6\u3001\u666e\u901a\u6587\u4ef6\u7b49\u3002 1\u3001stdin stdout stderr stdin:\u6807\u51c6\u8f93\u5165\u3002\u6307\u7684\u662f\u4e3a\u547d\u4ee4\u8fd0\u884c\u6240\u63d0\u4f9b\u7684\u4e00\u4e9b\u4fe1\u606f\u3002stdout:\u6807\u51c6\u8f93\u51fa\u3002\u6307\u7684\u662f\u547d\u4ee4\u6267\u884c\u6240\u8fd4\u56de\u7684\u6b63\u786e\u4fe1\u606f\u3002stderr:\u6807\u51c6\u9519\u8bef\u8f93\u51fa\u3002\u6307\u7684\u662f\u547d\u4ee4\u6267\u884c\u5931\u8d25\u540e\u6240\u8fd4\u56de\u7684\u9519\u8bef\u4fe1\u606f\u3002 \u8fd9\u4e09\u8005\u4e0e\u547d\u4ee4\u7684\u5173\u7cfb\u901a\u5e38\u5982\u4e0b\uff1a stdin stderr stdout File Command Screen\/File Screen\/File \u5728Linux\u73af\u5883\u4e0b\uff0c\u6211\u4eec\u8f93\u5165\u4e00\u6bb5\u547d\u4ee4\u5e76\u8fd0\u884c\u4ee5\u540e\uff0c\u5c4f\u5e55\u91cc\u4f1a\u663e\u793a\u4e24\u79cd\u7ed3\u679c\uff1a\u8fd0\u884c\u6210\u529f\u7ed3\u679c\u5373\u6807\u51c6\u8f93\u51fa\u3001\u8fd0\u884c\u5931\u8d25\u7ed3\u679c\u5373\u6807\u51c6\u9519\u8bef\u8f93\u51fa\u3002 \u6807\u51c6\u8f93\u51fa(STDOUT)\uff1a Standard output\uff0c\u6307\u7684\u662f\u547d\u4ee4\u6267\u884c\u6240\u8fd4\u56de\u7684\u6b63\u786e\u4fe1\u606f\u3002 \u6807\u51c6\u9519\u8bef\u8f93\u51fa(STDERR)\uff1a Standard error output\uff0c\u6307\u7684\u662f\u547d\u4ee4\u6267\u884c\u6240\u8fd4\u56de\u7684\u9519\u8bef\u4fe1\u606f\u3002 \u5982\u679c\u4e0d\u5bf9STDOUT\u548cSTDERR\u505a\u5904\u7406\uff0c\u4ed6\u4eec\u90fd\u4f1a\u663e\u793a\u5728\u5c4f\u5e55\u4e0a\uff0c\u901a\u8fc7\u6570\u636e\u6d41\u91cd\u5b9a\u5411\u5c31\u53ef\u4ee5\u5c06\u5176\u50a8\u5b58\u5230\u5176\u4ed6\u7684\u6587\u4ef6\u4e2d\uff0c\u800c\u5c06\u5176\u50a8\u5b58\u5728\u6587\u4ef6\u4e2d\u7684\u7279\u6b8a\u5b57\u7b26\u6709\uff1a \u6807\u51c6\u8f93\u5165stin\uff1a\u4ee3\u7801\u4e3a0\uff0c\u4f7f\u7528<\u6216<< \u6807\u51c6\u8f93\u51fastout\uff1a\u4ee3\u7801\u4e3a1\uff0c\u4f7f\u7528>\u6216>> \u6807\u51c6\u9519\u8bef\u8f93\u51fastderr\uff1a\u4ee3\u7801\u4e3a2\uff0c\u4f7f\u75282>\u62162>> 2\u3001\u6570\u636e\u6d41\u91cd\u5b9a\u5411\u7684\u4f7f\u7528 stdout\uff1a\u6807\u51c6\u8f93\u51fa\u91cd\u5b9a\u5411\u3002\u8fd9\u91cc\u91cd\u5b9a\u5411\u7684\u662f\u6b63\u786e\u8f93\u51fa\u3002 find \/ -name ‘.bashrc’ > ~\/out_right \u8be5\u547d\u4ee4\u5c06\u6b63\u786e\u8f93\u51fa\u5b9a\u5411\u8f93\u5165\u5230\u6587\u4ef6~\/out_right\u3002\u5982\u679c~\/out_right\u4e0d\u5b58\u5728\uff0c\u5219\u81ea\u52a8\u521b\u5efa\u3002\u56e0\u4e3a\u6ca1\u5bf9\u9519\u8bef\u4fe1\u606f\u5904\u7406\uff0c\u9519\u8bef\u8f93\u51fa\u9ed8\u8ba4\u8f93\u51fa\u5230\u5c4f\u5e55\u7ec8\u7aef\u4e0a\uff0c\u6b64\u65f6\u7ec8\u7aef\u53ea\u4f1a\u663e\u793a\u9519\u8bef\u8f93\u51fa\u3002 stderr\uff1a\u6807\u51c6\u9519\u8bef\u8f93\u51fa\u91cd\u5b9a\u5411\u3002\u8fd9\u91cc\u91cd\u5b9a\u5411\u7684\u662f\u9519\u8bef\u8f93\u51fa\u3002 find \/ -name ‘.bashrc’ 2> ~\/out_error \u8be5\u547d\u4ee4\u5c06\u9519\u8bef\u8f93\u51fa\u5b9a\u5411\u8f93\u5165\u5230\u6587\u4ef6~\/out_error\u3002\u5982\u679c~\/out_error\u4e0d\u5b58\u5728\uff0c\u5219\u81ea\u52a8\u521b\u5efa\u3002\u56e0\u4e3a\u6ca1\u5bf9\u6b63\u786e\u4fe1\u606f\u5904\u7406\uff0c\u6b63\u786e\u8f93\u51fa\u9ed8\u8ba4\u8f93\u51fa\u5230\u5c4f\u5e55\u7ec8\u7aef\u4e0a\uff0c\u6b64\u65f6\u7ec8\u7aef\u53ea\u4f1a\u663e\u793a\u6b63\u786e\u8f93\u51fa(\u5982\u679c\u6ca1\u627e\u5230\u6307\u5b9a\u6587\u4ef6\uff0c\u5c4f\u5e55\u6ca1\u6709\u8f93\u51fa)\u3002 stdin\uff1a\u4e00\u822c\u4f7f\u7528\u6807\u51c6\u8f93\u5165\u6765\u66ff\u6362\u952e\u76d8\u8f93\u5165\u3002 cat > catfile < ~\/.bashrc cat\u547d\u4ee4\u540e\u4e0d\u63a5\u4efb\u4f55\u53c2\u6570\uff0ccat\u4f1a\u4ece\u952e\u76d8\u8bfb\u53d6\u6570\u636e\u3002\u4f7f\u7528\u6807\u51c6\u8f93\u5165\uff0c\u5c06\u8f93\u5165\u6765\u6e90\u5b9a\u5411\u5230\u6587\u4ef6~\/.bashrc\u3002\u7136\u540e\u901a\u8fc7>\u5c06\u6807\u51c6\u8f93\u51fa\u5b9a\u4f4d\u5230catfile\u6587\u4ef6\u3002cat\u662f\u67e5\u770b\u6587\u4ef6\u7684\u547d\u4ee4\uff0c\u8fd9\u91cc\u76f4\u63a5\u8bfb\u53d6\u6587\u4ef6~\/.bashrc\u7136\u540e\u5c06\u5176\u8f93\u51fa\u5230catfile\u3002 3\u3001>>,2>>,<< >>(\u7d2f\u52a0\uff09\uff1a\u9644\u52a0\u6807\u51c6\u8f93\u51fa\u3002cmd > file1\uff0c\u547d\u4ee4cmd\u5c06stdout\u8f93\u51fa\u5230file1\u4e2d\uff0c\u5982\u679cfiel1\u6b64\u524d\u5b58\u5728\uff0c\u4e14\u6709\u6570\u636e\uff0c\u90a3\u4e48file1\u4f1a\u4e8b\u5148\u88ab\u6e05\u7a7a\uff0c\u7136\u540e\u5199\u5165stdout\u3002\u800c\u4f7f\u7528\u547d\u4ee4cmd >> file1\uff0c\u4e0d\u4f1a\u9884\u5148\u6e05\u7a7afile1\u6587\u4ef6\uff0c\u800c\u662f\u76f4\u63a5\u5728\u6587\u4ef6\u672b\u5c3e\u52a0\u4e0a\u8f93\u5165\u7684\u6570\u636e\u3002 2>>\uff08\u7d2f\u52a0\uff09\uff1a\u9644\u52a0\u6807\u51c6\u9519\u8bef\u8f93\u51fa\u3002\u4e0e>>\u76f8\u4f3c\u3002 <<\uff08\u6307\u5b9a\u7ed3\u675f\u5173\u952e\u5b57)\uff1a\u540e\u63a5\u7ed3\u675f\u7684\u8f93\u5165\u5b57\u7b26\u3002\u5173\u952e\u5b57\u5fc5\u987b\u72ec\u5360\u4e00\u884c\uff0c\u5426\u5219\u65e0\u6548\u3002 cat > catfile << “eof”  #\u8fd9\u91cc\u5173\u952e\u5b57\u4e3aeof > This is a test. > Ok now stop […]<\/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-52381","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/52381","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=52381"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/52381\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=52381"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=52381"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=52381"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}