{"id":91,"date":"2017-11-05T20:39:01","date_gmt":"2017-11-05T12:39:01","guid":{"rendered":"http:\/\/www.wuchangsong.com\/?p=91"},"modified":"2017-11-06T08:04:50","modified_gmt":"2017-11-06T00:04:50","slug":"shell%e7%9a%84%e5%8f%98%e9%87%8f%e5%8a%9f%e8%83%bd%ef%bc%88%e4%b8%80%ef%bc%89","status":"publish","type":"post","link":"http:\/\/www.wuchangsong.com\/?p=91","title":{"rendered":"shell\u7684\u53d8\u91cf\u529f\u80fd\uff08\u4e00\uff09"},"content":{"rendered":"

\u4ec0\u4e48\u662f\u53d8\u91cf\uff1f<\/strong><\/p>\n

\u53d8\u91cf\u662f\u4e00\u4e2a\u5b58\u50a8\u4f4d\u7f6e\u548c\u4e00\u4e2a\u5173\u8054\u7684\u7b26\u53f7\u540d\u5b57\uff0c\u8fd9\u4e2a\u5b58\u50a8\u4f4d\u7f6e\u5305\u542b\u4e86\u4e00\u4e9b\u5df2\u77e5\u6216\u672a\u77e5\u7684\u91cf\u6216\u8005\u4fe1\u606f\uff0c\u5373\u503c\u3002\u5728C\u8bed\u8a00\u91cc\uff0c\u53d8\u91cf\u662f\u5982\u4e0b\u4e09\u65b9\u9762\u7684\u7edf\u4e00\u4f53\uff1a<\/p>\n

    \n
  1. \u540d\u5b57\uff08\u8fd0\u884c\u65f6\u4f1a\u53d8\u6210\u6570\u5b57\u5316\u7684\u540d\u5b57\uff0c\u5185\u5b58\u5730\u5740\uff09<\/li>\n
  2. \u5b58\u50a8\u4f4d\u7f6e\uff08\u67d0\u4e00\u4f4d\u7f6e\u5f00\u59cb\u7684\u4e00\u5b9a\u5927\u5c0f\u7684\u5b58\u50a8\u7a7a\u95f4\uff09<\/li>\n
  3. \u8be5\u5b58\u50a8\u4f4d\u7f6e\u91cc\u5185\u5bb9\u7684\u89e3\u91ca\u65b9\u5f0f\uff08\u5373\u7c7b\u578b\uff0c\u6574\u6570\u3001\u6d6e\u70b9\u6570\u8fd8\u662f\u5b57\u7b26\u4e32\uff1f\uff09<\/li>\n<\/ol>\n

    \u4efb\u610f\u4e00\u90e8\u5206\u5355\u72ec\u90fd\u4e0d\u662f\u53d8\u91cf\u3002\u5f53\u6211\u4eec\u7ed9\u4e00\u4e2a\u53d8\u91cfa\u8d4b\u503c\u53e6\u4e00\u4e2a\u503c\u65f6\uff0c\u6539\u53d8\u7684\u662fa\u5bf9\u5e94\u7684\u5b58\u50a8\u4f4d\u7f6e\u91cc\u7684\u5185\u5bb9\uff0c\u8d4b\u503c\u524d\u540e\u662f\u540c\u4e00\u4e2aa\uff0c\u56e0\u4e3a1\u30012\u30013\u90fd\u6ca1\u6709\u53d8\u3002<\/p>\n

    \u53d8\u91cf\u7684\u663e\u793a<\/strong><\/p>\n

    \u53d8\u91cf\u7684\u8bbe\u7f6e\u89c4\u5219<\/strong><\/p>\n

      \n
    1. \u53d8\u91cf\u4e0e\u53d8\u91cf\u5185\u5bb9\u4ee5\u4e00\u4e2a\u7b49\u53f7\u201c=\u201d\u6765\u8fde\u63a5\uff1b<\/li>\n
    2. \u7b49\u53f7\u4e24\u8fb9\u4e0d\u80fd\u76f4\u63a5\u63a5\u7a7a\u683c\u7b26\uff1b<\/li>\n
    3. shell\u4e2d\u6240\u6709\u53d8\u91cf\u90fd\u5b9a\u4e49\u4e3a\u5b57\u7b26\u4e32\uff0c\u4e14\u53d8\u91cf\u540d\u79f0\u53ea\u80fd\u662f\u82f1\u6587\u5b57\u6bcd\u4e0e\u6570\u5b57\uff0c\u4f46\u662f\u6570\u5b57\u4e0d\u80fd\u662f\u5f00\u5934\u5b57\u7b26\uff1b<\/li>\n
    4. \u82e5\u6709\u7a7a\u683c\u7b26\u53ef\u4ee5\u4f7f\u7528\u53cc\u5f15\u53f7 \u00a0” \u00a0\u6216\u5355\u5f15\u53f7 \u00a0‘ \u00a0\u6765\u5c06\u53d8\u91cf\u5185\u5bb9\u7ed3\u5408\u8d77\u6765\uff0c\u4f46\u987b\u8981\u7279\u522b\u7559\u610f\uff0c \u53cc\u5f15\u53f7\u5185\u7684\u7279\u6b8a\u5b57\u7b26\u53ef\u4ee5\u4fdd\u6709\u53d8\u91cf\u7279\u6027\uff0c\u4f46\u662f\u5355\u5f15\u53f7\u5185\u7684\u7279\u6b8a\u5b57\u7b26\u5219\u4ec5\u4e3a\u4e00\u822c\u5b57\u7b26\uff1b<\/li>\n
    5. \u5fc5\u8981\u65f6\u9700\u8981\u4ee5\u8f6c\u610f\u5b57\u7b26 \u00a0 \\ \u00a0 \u6765\u5c06\u7279\u6b8a\u7b26\u53f7 ( \u5982 Enter, $, \\, \u7a7a\u683c\u7b26, ‘ \u7b49 ) \u53d8\u6210\u4e00\u822c\u7b26\u53f7\uff1b<\/li>\n
    6. \u5728\u4e00\u4e32\u6307\u4ee4\u4e2d\uff0c\u8fd8\u9700\u8981\u501f\u7531 \u5176\u5b83\u7684shell\u6307\u4ee4 \u63d0\u4f9b\u7684\u4fe1\u606f\uff0c\u53ef\u4ee5\u4f7f\u7528 \u00a0 ` command` \u00a0(\u7279\u522b\u7279\u522b\u6ce8\u610f\uff0c\u90a3\u4e2a ` \u662f\u952e\u76d8\u4e0a\u65b9\u7684\u6570\u5b57\u952e 1 \u5de6\u8fb9\u90a3\u4e2a\u6309\u952e\uff0c\u800c\u4e0d\u662f\u5355\u5f15\u53f7\uff01) \u6216\u5219$(\u547d\u4ee4) \u3002<\/li>\n
    7. \u82e5\u8be5\u53d8\u91cf\u9700\u8981\u6269\u589e\u53d8\u91cf\u5185\u5bb9\u65f6\uff0c\u5219\u9700\u4ee5\u53cc\u5f15\u53f7\u53ca $\u53d8\u91cf\u540d\u79f0 \u5982\uff1a “$PATH”:\/home <\/strong>\u00a0\u7ee7\u7eed\u7d2f\u52a0\u5185\u5bb9\uff1b<\/li>\n
    8. \u82e5\u8be5\u53d8\u91cf\u9700\u8981\u5728\u5176\u5b83\u5b50\u7a0b\u5e8f\u6267\u884c\uff0c\u5219\u9700\u8981\u4ee5 \u00a0export \u00a0\u6765\u4f7f\u53d8\u91cf\u53d8\u6210\u73af\u5883\u53d8\u91cf\uff0c\u4f8b\u5982\uff1a<\/li>\n<\/ol>\n

      #export \u00a0PATH<\/p>\n

        \n
      1. \u901a\u5e38\u5927\u5199\u5b57\u7b26\u4e3a\u7cfb\u7edf\u9884\u8bbe\u53d8\u91cf\uff0c\u81ea\u884c\u8bbe\u5b9a\u53d8\u91cf\u53ef\u4ee5\u4f7f\u7528\u5c0f\u5199\u5b57\u7b26\uff0c\u65b9\u4fbf\u5224\u65ad ( \u7eaf\u7cb9\u4f9d\u7167\u4f7f\u7528\u8005\u5174\u8da3\u4e0e\u55dc\u597d ) \u3002<\/li>\n
      2. \u53d6\u6d88\u53d8\u91cf\u7684\u65b9\u6cd5\u4e3a\uff1a unset \u00a0\u53d8\u91cf\u540d\u79f0\u3002\u4f8b\u5982\uff1a<\/li>\n<\/ol>\n

        #unset \u00a0 myname<\/p>\n

        \u73af\u5883\u53d8\u91cf<\/strong><\/p>\n

        \u5728\u6240\u6709 Unix<\/a> \u548c \u7c7bUnix\u7cfb\u7edf<\/a>\u4e2d, \u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u6709\u5176\u5404\u81ea\u7684\u73af\u5883<\/strong>\u53d8\u91cf<\/strong><\/a>\u8bbe\u7f6e<\/strong>\u3002 \u7f3a\u7701\u60c5\u51b5\u4e0b, \u5f53\u4e00\u4e2a\u8fdb\u7a0b\u88ab\u521b\u5efa\u65f6\uff0c \u9664\u4e86\u521b\u5efa\u8fc7\u7a0b\u4e2d\u7684\u660e\u786e\u66f4\u6539\u5916\uff0c\u5b83\u7ee7\u627f\u4e86\u5176\u7236\u8fdb\u7a0b\u7684\u7edd\u5927\u90e8\u5206\u73af\u5883\u8bbe\u7f6e\u3002 \u5728API\u5c42\u7ea7\u4e0a, \u4f7f\u7528fork\u548cexec\u51fd\u6570\u8fdb\u884c\u53d8\u91cf\u8bbe\u7f6e\u3002\u6216\u5229\u7528bash<\/a>shell\u6587\u4ef6, \u4f7f\u7528\u7279\u6b8a\u7684\u547d\u4ee4\u8c03\u7528\u6765\u6539\u53d8\u73af\u5883\u53d8\u91cf\uff1a\u901a\u8fc7env<\/a> \u95f4\u63a5\u66ff\u4ee3\u6216\u8005\u4f7f\u7528ENVIRONMENT_VARIABLE=VALUE <command> \u6807\u8bc6. \u6240\u6709\u7684Unix<\/a>\u64cd\u4f5c\u7cfb\u7edf<\/a> \u4ee5\u53caDOS<\/a> \u548cMicrosoft Windows<\/a> \u90fd\u662f\u7528\u73af\u5883\u53d8\u91cf\uff0c\u4f46\u662f\u5b83\u4eec\u4f7f\u7528\u4e0d\u540c\u7684\u73af\u5883\u53d8\u91cf\u540d\u79f0\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u8fd0\u884c\u7a0b\u5e8f\u6765\u8bbf\u95ee\u73af\u5883\u53d8\u91cf\u7684\u503c\u3002\u73af\u5883\u53d8\u91cf\u7684\u4f8b\u5b50\u5305\u62ec\uff1a<\/p>\n