{"id":7309,"date":"2023-03-22T15:09:57","date_gmt":"2023-03-22T07:09:57","guid":{"rendered":"http:\/\/www.5x44.cn\/?p=7309"},"modified":"2023-03-22T15:09:57","modified_gmt":"2023-03-22T07:09:57","slug":"shell%e8%84%9a%e6%9c%ac%e4%b9%8b%e8%8a%b1%e6%8b%ac%e5%8f%b7%e5%b1%95%e5%bc%80%e5%ba%8f%e5%88%97","status":"publish","type":"post","link":"https:\/\/www.5x44.cn\/?p=7309","title":{"rendered":"shell\u811a\u672c\u4e4b\u82b1\u62ec\u53f7\u5c55\u5f00\u5e8f\u5217"},"content":{"rendered":"\n<p>{1..3}\u53ef\u4ee5\u5c55\u5f00\u62101 2 3\uff0c\u90a3\u4e48\u60f3\u52a8\u6001\u5c55\u5f00\u8981\u600e\u4e48\u505a\u5462\uff1f<\/p>\n\n\n\n<p>\u6bd4\u5982\u60f3\u5c55\u5f00i=1, j=4{$i..$j}\uff0c\u8fd9\u5c31\u8981\u7528\u5230eval\u624d\u53ef\u4ee5\uff0c\u4e0d\u7136\u65e0\u6cd5\u5c55\u5f00\u62101 2 3 4\u8fd9\u79cd\u5e8f\u5217\u3002<\/p>\n\n\n\n<p>\u5177\u4f53\u65b9\u6cd5\u662f\uff1a<\/p>\n\n\n\n<p>eval echo {$i..$j}  \u6216\u8005 eval &#8220;echo {$i..$j}&#8221;<\/p>\n\n\n\n<p>\u4e24\u79cd\u5f62\u5f0f\u6839\u636e\u60c5\u51b5\u4f7f\u7528\uff0c\u4f46\u4ece\u8fd9\u4e24\u53e5\u6765\u8bf4\u7b2c\u4e8c\u79cd\u66f4\u76f4\u89c2\u4e00\u4e9b\uff0c\u56e0\u4e3a\u53cc\u5f15\u53f7\u8bf4\u660e\u201cecho {$i..$j}\u201d\u662feval\u7684\u53c2\u6570\u3002eval\u7684\u529f\u80fd\u5c31\u662f\u5c06\u5176\u53c2\u6570\u5c55\u5f00\u6210shell\u53ef\u6267\u884c\u7684\u4ee3\u7801\u3002\u6240\u4ee5\u7ecf\u8fc7\u5c55\u5f00\u5176\u53d8\u6210<code>echo {1..4}<\/code> ,\u8fd9\u79cd\u5f62\u5f0f\u662f\u53ef\u4ee5\u5728shell\u4e2d\u6267\u884c\u7684\uff0c\u8fd9\u79cd\u82b1\u62ec\u53f7\u5c55\u5f00\u662f\u4ecebash4.0\u5f00\u59cb\u52a0\u5165\u7684\u3002<\/p>\n\n\n\n<p>eval echo {&#8220;1&#8221;..&#8221;4&#8243;}\u540c\u6837\u53ef\u4ee5\u5c55\u5f00\u62101 2 3 4\u7684\u5e8f\u5217\uff0c\u4f46\u662fecho {&#8220;1&#8221;..&#8221;4&#8243;}\u53ea\u80fd\u5c55\u5f00\u6210{1..4}\u3002<\/p>\n\n\n\n<p>PS:\u5982\u679c\u4f60\u60f3\u901a\u8fc7\u8fd9\u4e2a\u4f8b\u5b50\u8003\u9a8c\u4e00\u4e0bAI\u4e5f\u53ef\u4ee5\uff0c\u95eeAI\u5982\u4f55\u5728shell\u7684\u82b1\u62ec\u53f7\u5c55\u5f00\u4e2d\u4f7f\u7528\u53d8\u91cf\uff0c\u4f8b\u5982{$i..$j}\u8fd9\u79cd\u5f62\u5f0f\u30022023\u5e743\u670821\u65e5\u6211\u627e\u51e0\u4e2a\u80fd\u8bbf\u95eeGPT\u7684\u670b\u53cb\u8bd5\u4e86\u4e00\u4e0b\uff0c\u53ea\u6709GPT4.0\u53ef\u4ee5\u5feb\u901f\u7684\u7ed9\u51fa\u7b54\u6848\uff0cGPT3.5\u8981\u901a\u8fc7\u4e8c\u6b21\u5f15\u5bfc\u624d\u53ef\u4ee5\uff0cnew bing\u901a\u8fc7\u53cd\u590d\u5f15\u5bfc\u4e5f\u65e0\u6cd5\u7ed9\u51fa\u7b54\u6848\u3002\u5176\u5b83AI\u751a\u81f3\u8ba9\u6211\u5c06bash\u4ece4.2\u5347\u7ea7\u52304.0\uff0c\u56e0\u4e3a\u82b1\u62ec\u53f7\u6269\u5c55\u662f4.0\u624d\u6709\u7684\u7279\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>{1..3}\u53ef\u4ee5\u5c55\u5f00\u62101 2 3\uff0c\u90a3\u4e48\u60f3\u52a8\u6001\u5c55\u5f00\u8981\u600e\u4e48\u505a\u5462\uff1f \u6bd4\u5982\u60f3\u5c55\u5f00i=1, j=4{$i..$j}\uff0c\u8fd9\u5c31\u8981\u7528\u5230eval\u624d\u53ef\u4ee5\uff0c\u4e0d\u7136\u65e0\u6cd5\u5c55\u5f00\u62101 2 3 4&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"https:\/\/www.5x44.cn\/?p=7309\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-7309","post","type-post","status-publish","format-standard","hentry","category-it"],"_links":{"self":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/7309","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7309"}],"version-history":[{"count":1,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/7309\/revisions"}],"predecessor-version":[{"id":7310,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/7309\/revisions\/7310"}],"wp:attachment":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7309"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7309"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7309"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}