{"id":2531,"date":"2017-07-30T21:04:57","date_gmt":"2017-07-30T13:04:57","guid":{"rendered":"http:\/\/cn.hostease.com\/xueyuan\/?p=2531"},"modified":"2017-07-30T21:04:57","modified_gmt":"2017-07-30T13:04:57","slug":"linux%e5%b7%a5%e5%85%b7%e4%b9%8bbc%e8%ae%a1%e7%ae%97%e5%99%a8%e8%bf%9b%e5%88%b6%e7%9a%84%e8%bd%ac%e6%8d%a2","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/xueyuan\/jishu\/linux\/linux%e5%b7%a5%e5%85%b7%e4%b9%8bbc%e8%ae%a1%e7%ae%97%e5%99%a8%e8%bf%9b%e5%88%b6%e7%9a%84%e8%bd%ac%e6%8d%a2\/","title":{"rendered":"Linux\u5de5\u5177\u4e4bbc\u8ba1\u7b97\u5668\u8fdb\u5236\u7684\u8f6c\u6362"},"content":{"rendered":"

bc\u662fLinux\u4e0b\u7684\u547d\u4ee4\u884c\u5f0f\u7684\u8ba1\u7b97\u5668\u3002\u00a0\u9898\u76ee\u867d\u7136\u53eb\u4efb\u610f\u8fdb\u5236\uff0c\u4f46\u662f\u56e0\u4e3abc\u7684\u9650\u5236\uff0c\u8f93\u5165\u8fdb\u5236\u662f2~16\u8303\u56f4\uff1b\u8f93\u51fa\u8fdb\u5236\u662f2~999\u8303\u56f4\u3002\u8fd9\u4e0e\u5e38\u89c1\u8ba1\u7b97\u5668\u7684\u8fdb\u5236\u8303\u56f4\u662f\u4e00\u81f4\u7684\uff0c\u6bd4\u5982windows\u8ba1\u7b97\u5668\u6700\u9ad8\u4e5f\u53ea\u80fd\u5904\u740616\u8fdb\u5236\u8f93\u5165\u6570\u636e\u3002<\/p>\n

\u4e00\u3001bc\u8ba1\u7b97\u5668\u7684\u4f7f\u7528<\/h2>\n
    \n
  1. bc\u8ba1\u7b97\u5668\u9ed8\u8ba4\u8f93\u5165\u3001\u8f93\u51fa\u90fd\u4e3a10\u8fdb\u5236\u3002\n
    [root@CentOS<\/a>6 ~]# bc                                  #\u6253\u5f00bc\u8ba1\u7b97\u5668<\/span>\r\nbc 1.06<\/span>.95<\/span>\r\nCopyright 2006<\/span> Free Software Foundation, Inc.\r\nThis is<\/span> free software with<\/span> ABSOLUTELY NO WARRANTY.\r\nFor<\/span> details type `warranty'. <\/span>\r\n88<\/span>*123<\/span>                                                #\u8ba1\u7b97 88*123<\/span>\r\n10824<\/span>                                                 #\u8ba1\u7b97\u5668\u8f93\u51fa\u7ed3\u679c<\/span>\r\n#<\/span>\r\n#<\/span>\r\n123<\/span>+65<\/span>*2<\/span>-100<\/span>                                          #\u8ba1\u7b97123+65*2-100<\/span>\r\n153<\/span>                                                   #\u8ba1\u7b97\u5668\u8f93\u51fa\u7ed3\u679c<\/span><\/code><\/pre>\n<\/li>\n
  2. bc\u8ba1\u7b97\u5668\u8fdb\u5236\u8f6c\u6362\n
    [root@centos6 ~]# bc<\/span>\r\nobase=16<\/span>                                        #\u8bbe\u7f6e\u8f93\u51fa\u4e3a16\u8fdb\u5236<\/span>\r\nibase=2<\/span>                                         #\u8bbe\u7f6e\u8f93\u5165\u4e3a2\u8fdb\u5236<\/span>\r\n1111111111111100011010<\/span>                          #\u8f93\u51652\u8fdb\u5236\u6570<\/span>\r\n3<\/span>FFF1A                                          #\u8f6c\u6362\u4e3a16\u8fdb\u5236<\/span><\/code><\/pre>\n<\/li>\n<\/ol>\n
    \u4e8c\u3001\u901a\u8fc7\u7ba1\u9053\u8fd0\u7b97\u4e0e\u8fdb\u5236\u8f6c\u6362<\/h2>\n
      \n
    1. \u8fd9\u91cc\u4f7f\u7528\u7684\u7ba1\u9053\u53ef\u4ee5\u7b80\u5355\u7684\u7406\u89e3\u4e3a\u5c06echo \"1+2\"<\/code>\u53d1\u9001\u7ed9 bc\u8ba1\u7b97\u5668\n
      [root@centos6 ~]# echo \"1+1\" | bc               #\u5c061+1\u53d1\u9001\u7ed9bc\u8ba1\u7b97\u5668<\/span>\r\n2<\/span>\r\n[root@centos6 ~]#<\/span>\r\n[root@centos6 ~]# echo \"5*10-1\" | bc            #\u5c065*10-1\u53d1\u9001\u7ed9bc\u8ba1\u7b97\u5668<\/span>\r\n49<\/span><\/code><\/pre>\n<\/li>\n
    2. \u53cc\u5f15\u53f7\u3001\u5355\u5f15\u53f7\u3001\u53cd\u5355\u5f15\u53f7\u7684\u4f7f\u7528\n
      [root@centos6 ~]# echo \"123+123\" | bc<\/span>\r\n246<\/span>\r\n[root@centos6 ~]# echo '111+111'<\/span>\r\n111<\/span>+111<\/span>\r\n[root@centos6 ~]# echo '111+111' | bc<\/span>\r\n222<\/span>\r\n[root@centos6 ~]# echo `111+111` | bc   <\/span>\r\n-bash: 111<\/span>+111<\/span>: command not<\/span> found\r\n[root@centos6 ~]# echo \"`echo 123`+10\" | bc<\/span>\r\n133<\/span><\/code><\/pre>\n<\/li>\n<\/ol>\n
      \u4e09\u3001\u4f7f\u7528\u4e2d\u9047\u5230\u7684\u95ee\u9898<\/h2>\n
        \n
      1. \u5148\u8bbe\u7f6eobase\u5728\u8bbe\u7f6eibase\uff0c\u8ba1\u7b97\u5668\u6b63\u5e38\u3002\n
        [root@centos6 ~]# bc<\/span>\r\nbc 1.06<\/span>.95<\/span>\r\nCopyright 2006<\/span> Free Software Foundation,\r\nThis is<\/span> free software with<\/span> ABSOLUTELY NO WARRANTY.\r\nFor<\/span> details type `warranty'. <\/span>\r\nobase=16<\/span>\r\nibase=2<\/span>\r\n1111111111111100011010<\/span>\r\n3<\/span>FFF1A<\/code><\/pre>\n<\/li>\n
      2. \u5148\u8bbe\u7f6eibase\u5728\u8bbe\u7f6eobase\uff0c\u8ba1\u7b97\u5668\u8f93\u51fa\u4e0d\u6b63\u5e38\u3002\n
        [root@centos6 ~]# bc<\/span>\r\nbc 1.06<\/span>.95<\/span>\r\nCopyright  2006<\/span> Free Software Foundation, Inc.\r\nThis is<\/span> free software with<\/span> ABSOLUTELY NO WARRANTY.\r\nFor<\/span> details type `warranty'. <\/span>\r\nibase=2<\/span>\r\nobase=16<\/span>\r\n1111111111111100011010<\/span>\r\n21220002012002<\/span><\/code><\/pre>\n<\/li>\n
      3. \u5148\u8bbe\u7f6eobase\u5728\u8bbe\u7f6eibase\uff0c\u8ba1\u7b97\u8f93\u51fa\u6b63\u5e38
        \n\u4fee\u6539obase\u540e\u8ba1\u7b97\u8f93\u51fa\u4e0d\u6b63\u5e38<\/p>\n
        [root@centos6 ~]# bc<\/span>\r\nbc 1.06<\/span>.95<\/span>\r\nCopyright  2006<\/span> Free Software Foundation, Inc.\r\nThis is<\/span> free software with<\/span> ABSOLUTELY NO WARRANTY.\r\nFor<\/span> details type `warranty'. <\/span>\r\nobase=16<\/span>\r\nibase=2<\/span>\r\n1111111111111100011010<\/span>\r\n3<\/span>FFF1A\r\nobase=10<\/span>\r\n1111111111111100011010<\/span>\r\n1111111111111100011010<\/span><\/code><\/pre>\n<\/li>\n
      4. \u5148\u8bbe\u7f6eobase\u5728\u8bbe\u7f6eibase\u6b63\u5e38\uff0cibase\u4e0eobase\u4e92\u6362\u8f93\u51fa\u4e0d\u6b63\u5e38\u3002\n
        [root@centos6 ~]# bc<\/span>\r\nbc 1.06.95\r\nCopyright  2006 Free Software Foundation, Inc.\r\nThis is free software with ABSOLUTELY NO WARRANTY.\r\nFor details type `warranty'. \r\nobase=16\r\nibase=2\r\n1111111111111100011010\r\n3FFF1A\r\nobase=2\r\nibase=16\r\n3FFF1A\r\n1011010101<\/code><\/pre>\n<\/li>\n
      5. \u4f7f\u7528\u7ba1\u9053\u65f6\u540c\u6837\u53ea\u80fd\u5148\u7ed9obase\u8d4b\u503c\n
        [root@centos6 ~]# echo \"ibase=2;obase=16;11101\"<\/span> | bc<\/span>\r\n1002<\/span>\r\n[root@centos6 ~]# echo \"obase=16;ibase=2;11101\"<\/span> | bc<\/span>\r\n1<\/span>D<\/code><\/pre>\n<\/li>\n<\/ol>\n
        \u7ed3\u8bba\uff1f\uff1f\uff1f\uff1f\uff1f<\/h2>\n
        \u5728bc\u8ba1\u7b97\u5668\u4e2d\uff0cobase\u4e0eibase\u7684\u8d4b\u503c\u6709\u5148\u540e\u987a\u5e8f\u3002
        \n\u4e14\u5728\u8ba1\u7b97\u8fc7\u7a0b\u4e2dibase\u4e0eobase\u53ea\u80fd\u8d4b\u503c\u4e00\u6b21\u3002<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"
        bc\u662fLinux\u4e0b\u7684\u547d\u4ee4\u884c\u5f0f\u7684\u8ba1\u7b97\u5668\u3002\u00a0\u9898\u76ee\u867d\u7136\u53eb\u4efb\u610f\u8fdb\u5236\uff0c\u4f46\u662f\u56e0\u4e3abc\u7684\u9650\u5236\uff0c\u8f93\u5165\u8fdb\u5236\u662f2~16\u8303\u56f4\uff1b\u8f93\u51fa\u8fdb … \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[49],"tags":[],"class_list":["post-2531","post","type-post","status-publish","format-standard","hentry","category-linux"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/2531","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/comments?post=2531"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/2531\/revisions"}],"predecessor-version":[{"id":2532,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/2531\/revisions\/2532"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/media?parent=2531"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/categories?post=2531"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/tags?post=2531"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}