{"id":88045,"date":"2020-02-04T12:01:45","date_gmt":"2020-02-04T04:01:45","guid":{"rendered":"http:\/\/4563.org\/?p=88045"},"modified":"2020-02-04T12:01:45","modified_gmt":"2020-02-04T04:01:45","slug":"%e5%a6%82%e4%bd%95%e4%b8%8d%e9%87%8d%e6%96%b0%e5%86%99%e5%85%a5%e9%87%8d%e5%a4%8d%e5%86%85%e5%ae%b9%e8%80%8c%e5%88%a0%e9%99%a4%e4%b8%80%e4%b8%aa%e6%96%87%e4%bb%b6%e6%9c%ab%e5%b0%be%e7%9a%84%e5%86%85","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=88045","title":{"rendered":"\u5982\u4f55\u4e0d\u91cd\u65b0\u5199\u5165\u91cd\u590d\u5185\u5bb9\u800c\u5220\u9664\u4e00\u4e2a\u6587\u4ef6\u672b\u5c3e\u7684\u5185\u5bb9\uff1f"},"content":{"rendered":"
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\u5982\u4f55\u4e0d\u91cd\u65b0\u5199\u5165\u91cd\u590d\u5185\u5bb9\u800c\u5220\u9664\u4e00\u4e2a\u6587\u4ef6\u672b\u5c3e\u7684\u5185\u5bb9\uff1f <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : sxw <\/span> <\/i> 18<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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\u9700\u6c42\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n

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\u6211\u77e5\u9053\u7684\u4e00\u4e2a\u529e\u6cd5\u662f\u91cd\u65b0\u5199\u5165\u4e00\u6b21\uff0c\u4f46\u662f\u8017\u65f6\u5f88\u591a\u3002<\/p>\n

\u8bf7\u95ee\u5e94\u8be5\u600e\u4e48\u64cd\u4f5c\u624d\u80fd\u907f\u514d\u91cd\u5199\u6587\u4ef6\u5462\uff1f<\/p>\n

\u4f7f\u7528 “w” \u6216\u8005 “w+” \u6253\u5f00\u6587\u4ef6\u597d\u50cf\u662f\u76f4\u63a5\u6e05\u7a7a\u6587\u4ef6\uff1f(\u6211\u5c1d\u8bd5\u4f7f\u7528 w+ \u6253\u5f00\uff0cseek \u4ee5\u540e\u5565\u4e5f\u4e0d\u5199\u5165\uff0c\u6587\u4ef6\u88ab\u6e05\u7a7a\uff09<\/p>\n

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\u5b9e\u9a8c\u4ee3\u7801\uff08 python3 \uff09\uff1a<\/p>\n

\"\u5982\u4f55\u4e0d\u91cd\u65b0\u5199\u5165\u91cd\u590d\u5185\u5bb9\u800c\u5220\u9664\u4e00\u4e2a\u6587\u4ef6\u672b\u5c3e\u7684\u5185\u5bb9\uff1f\"<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (5<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : tabris17 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    ftruncate <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : rrfeng <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    seek() <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : sxw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @rrfeng \u8bf7\u95ee seek \u600e\u4e48\u64cd\u4f5c\u5462\uff1f\u7528\u4ec0\u4e48\u65b9\u5f0f\u6253\u5f00\u6587\u4ef6\uff1f\u6211\u5c1d\u8bd5\u7528 ‘w+’ \u548c ‘w’ \u6253\u5f00\u6587\u4ef6 seek \u518d\u5173\u95ed\uff0c\u90fd\u4f1a\u6e05\u7a7a\u6587\u4ef6\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : sxw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @tabris17 \u975e\u5e38\u611f\u8c22\uff0c\u5f04\u597d\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : sxw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6839\u636e @tabris17 \u7684\u65b9\u6cd5\uff0c\u7528 python3 \u5b9e\u73b0\u662f\uff1a<\/p>\n

    “`python
    import os
    f = os.open(‘test_file’, os.O_RDWR|os.O_CREAT)
    os.ftruncate(f, os.path.getsize(‘test_file’) – 2)
    os.close(f)
    “`<\/p>\n

    \u8017\u65f6\u51e0\u6beb\u79d2 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n","protected":false},"excerpt":{"rendered":"

    \u5982\u4f55\u4e0d\u91cd\u65b0\u5199\u5165\u91cd\u590d\u5185\u5bb9\u800c\u5220\u9664\u4e00\u4e2a\u6587…<\/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\/88045"}],"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=88045"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/88045\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=88045"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=88045"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=88045"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}