{"id":153873,"date":"2020-09-10T04:10:27","date_gmt":"2020-09-09T20:10:27","guid":{"rendered":"http:\/\/4563.org\/?p=153873"},"modified":"2020-09-10T04:10:27","modified_gmt":"2020-09-09T20:10:27","slug":"%e6%80%8e%e4%b9%88%e7%94%a8-sed-%e5%ae%9e%e7%8e%b0%e6%9b%bf%e6%8d%a2%e5%8f%98%e4%b8%ba0%ef%bc%8c%e5%8d%b3%e7%b1%bb%e4%bc%bc-tr-0-%e7%9a%84%e6%95%88%e6%9e%9c%e5%91%a2","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=153873","title":{"rendered":"\u600e\u4e48\u7528 sed \u5b9e\u73b0\u66ff\u6362’:’\u53d8\u4e3a’\u0000’\uff0c\u5373\u7c7b\u4f3c tr ‘:’ ‘\u0000’ \u7684\u6548\u679c\u5462"},"content":{"rendered":"
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\u600e\u4e48\u7528 sed \u5b9e\u73b0\u66ff\u6362’:’\u53d8\u4e3a’\u0000’\uff0c\u5373\u7c7b\u4f3c tr ‘:’ ‘\u0000’ \u7684\u6548\u679c\u5462 <\/h1>\n

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\u8cc7\u6df1\u5927\u4f6c : ticotic <\/span> <\/i> 1<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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\u66ff\u6362\u6210\u7279\u6b8a\u5b57\u7b26’t’\u53ef\u4ee5\u6b63\u5e38\u8f93\u51fa<\/p>\n

echo \"\/usr\/local\/sbin:\/usr\/local\/bin:\/usr\/sbin:\/usr\/bin:\/sbin:\/bin:\/usr\/games\" | sed -n 's\/:\/t\/gp'  # \u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a\/usr\/local\/sbin \/usr\/local\/bin \/usr\/sbin \/usr\/bin \/sbin \/bin \/usr\/games <\/code><\/pre>\n
\u4f46\u662f\u5bf9\u4e8e’\u0000’\uff0c\u5374\u6ca1\u6709\u66ff\u6362”:”\u4e3a”\u0000”<\/p>\n
echo \"\/usr\/local\/sbin:\/usr\/local\/bin:\/usr\/sbin:\/usr\/bin:\/sbin:\/bin:\/usr\/games\" | sed -n 's\/:\/\u0000\/gp'  # \u8f93\u51fa\u7684\u7ed3\u679c\u4e3a\uff1a\/usr\/local\/sbin:\/usr\/local\/bin:\/usr\/sbin:\/usr\/bin:\/sbin:\/bin:\/usr\/games <\/code><\/pre>\n
\u521d\u5b66 shell\uff0cgoogle \u4e86\u4e0b\u6ca1\u627e\u5230\u60f3\u8981\u7684\u7b54\u6848\uff0c\u60f3\u8bf7\u6559\u4e00\u4e0b \u539f\u56e0 \u4ee5\u53ca \u4f7f\u7528 sed \u66ff\u6362\u7684\u6b63\u786e\u5199\u6cd5\uff0c\u591a\u8c22\uff01<\/p>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (8<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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  • \n
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     \u8cc7\u6df1\u5927\u4f6c : thedrwu <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u624b\u673a\u4e0a\u6ca1\u6cd5\u6d4b\u8bd5\uff0c\u731c\u6d4b\u9700\u8981\u5199\u6210x0 \u8fd8\u662fu0 \u4e4b\u7c7b\u7684\uff0c\u4e0d\u4e00\u5b9a\u4f1a\u517c\u5bb9 POSIX \u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : toaruScar <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5bf9\u4e8e sed \u6765\u8bf4\uff0cs\/regexp\/replacement\/flags \u8fd9\u4e2a\u547d\u4ee4\u91cc\uff0creplacement \u4e2d\u7684”\u0000”\u6307\u4ee3\u7684\u662f\u6574\u4e2a regex match \u5230\u7684\u90e8\u5206\uff0c\u6240\u4ee5\u76f8\u5f53\u4e8e\u4f60\u544a\u8bc9 sed \u628a\u627e\u5230\u7684\u201c:\u201d\u7528\u201c:\u201d\u66ff\u6362\u4e00\u904d\uff0c\u6240\u4ee5\u539f\u5c01\u4e0d\u52a8\u7684\u7ed9\u4f60\u9001\u51fa\u6765\u4e86\u3002
    \u5982\u679c\u8981\u6307\u4ee3 null byte\uff0c\u4f60\u53ef\u4ee5\u7528”x0″\uff0c\u6216\u8005”x0″\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : toaruScar <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 *\u53ef\u4ee5\u7528”x0″\uff0c\u6216\u8005”o0″                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : virtuemartx <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 tr ‘:’ ‘\u0000’
    tr ‘:’ ‘\\0’                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : lazyzhang <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 sed -n ‘s\/:\/\\0\/gp’                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : kokutou <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 https:\/\/i.loli.net\/2020\/09\/09\/lxKWwTfYt85JzOp.png<\/p>\n
    \u4f60 Google \u5173\u952e\u5b57\u4e0d\u5bf9\u5427
    \u5f00\u5934 3 \u4e2a\u7b54\u6848, \u5c31\u662f 3 \u4e2a\u4e0d\u540c\u7684\u9700\u6c42, \u5168\u7ed9\u4f60\u89e3\u51b3\u4e86…                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : ticotic <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @thedrwu \u8bd5\u4e86\u4e0b\u66ff\u6362\u6210x0 \u6216\u8005u0 \u90fd\u53ef\uff0c\u8c22\u5566\uff01
    @toaruScar \u8bd5\u4e86\u4e0b\u5b9e\u73b0\u6548\u679c\u4e86\uff0c\u591a\u8c22\uff01
    @kokutou emmm \u5f53\u65f6\u4e5f\u770b\u5230\u4e86\u8fd9\u51e0\u4e2a\u7b54\u6848\uff0c\u4f30\u8ba1\u662f\u7c97\u5fc3\u8f93\u9519\u547d\u4ee4\u53d1\u73b0\u6548\u679c\u4e0d\u5bf9\uff0c\u6240\u4ee5\u6765\u95ee\uff0c\u73b0\u5728\u91cd\u65b0\u770b\u4e86\u4e0b\u518d\u6b21\u8bd5\u9a8c\u4e86\u4e0b\u786e\u5b9e\u6ca1\u9519\uff0c\u611f\u8c22\u56de\u7b54\uff01                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : ticotic <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 u0 -> o0                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    \u600e\u4e48\u7528 sed \u5b9e\u73b0\u66ff\u6362&#821…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/153873"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=153873"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/153873\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=153873"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=153873"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=153873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}