{"id":741,"date":"2016-04-07T16:02:13","date_gmt":"2016-04-07T08:02:13","guid":{"rendered":"https:\/\/yanjingang.com\/blog\/?p=741"},"modified":"2016-04-07T16:02:13","modified_gmt":"2016-04-07T08:02:13","slug":"hadoop-shell%e5%91%bd%e4%bb%a4","status":"publish","type":"post","link":"https:\/\/yanjingang.com\/blog\/?p=741","title":{"rendered":"Hadoop Shell\u547d\u4ee4"},"content":{"rendered":"<h2 class=\"h3\">FS Shell<\/h2>\n<div class=\"section\">\n<p>\u8c03\u7528\u6587\u4ef6\u7cfb\u7edf(FS)Shell\u547d\u4ee4\u5e94\u4f7f\u7528 <span class=\"codefrag\">bin\/hadoop fs &lt;args&gt;<\/span>\u7684\u5f62\u5f0f\u3002 \u6240\u6709\u7684\u7684FS shell\u547d\u4ee4\u4f7f\u7528URI\u8def\u5f84\u4f5c\u4e3a\u53c2\u6570\u3002URI\u683c\u5f0f\u662f<em>scheme:\/\/authority\/path<\/em>\u3002\u5bf9HDFS\u6587\u4ef6\u7cfb\u7edf\uff0cscheme\u662f<em>hdfs<\/em>\uff0c\u5bf9\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\uff0cscheme\u662f<em>file<\/em>\u3002\u5176\u4e2dscheme\u548cauthority\u53c2\u6570\u90fd\u662f\u53ef\u9009\u7684\uff0c\u5982\u679c\u672a\u52a0\u6307\u5b9a\uff0c\u5c31\u4f1a\u4f7f\u7528\u914d\u7f6e\u4e2d\u6307\u5b9a\u7684\u9ed8\u8ba4scheme\u3002\u4e00\u4e2aHDFS\u6587\u4ef6\u6216\u76ee\u5f55\u6bd4\u5982<em>\/parent\/child<\/em>\u53ef\u4ee5\u8868\u793a\u6210<em>hdfs:\/\/namenode:namenodeport\/parent\/child<\/em>\uff0c\u6216\u8005\u66f4\u7b80\u5355\u7684<em>\/parent\/child<\/em>\uff08\u5047\u8bbe\u4f60\u914d\u7f6e\u6587\u4ef6\u4e2d\u7684\u9ed8\u8ba4\u503c\u662f<em>namenode:namenodeport<\/em>\uff09\u3002\u5927\u591a\u6570FS Shell\u547d\u4ee4\u7684\u884c\u4e3a\u548c\u5bf9\u5e94\u7684Unix Shell\u547d\u4ee4\u7c7b\u4f3c\uff0c\u4e0d\u540c\u4e4b\u5904\u4f1a\u5728\u4e0b\u9762\u4ecb\u7ecd\u5404\u547d\u4ee4\u4f7f\u7528\u8be6\u60c5\u65f6\u6307\u51fa\u3002\u51fa\u9519\u4fe1\u606f\u4f1a\u8f93\u51fa\u5230<em>stderr<\/em>\uff0c\u5176\u4ed6\u4fe1\u606f\u8f93\u51fa\u5230<em>stdout<\/em>\u3002<\/p>\n<h3 class=\"h4\">cat<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -cat URI [URI \u2026]<\/span><\/p>\n<p>\u5c06\u8def\u5f84\u6307\u5b9a\u6587\u4ef6\u7684\u5185\u5bb9\u8f93\u51fa\u5230<em>stdout<\/em>\u3002<\/p>\n<p>\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li><span class=\"codefrag\">hadoop fs -cat hdfs:\/\/host1:port1\/file1 hdfs:\/\/host2:port2\/file2<\/span><\/li>\n<li><span class=\"codefrag\">hadoop fs -cat file:\/\/\/file3 \/user\/hadoop\/file4<\/span><\/li>\n<\/ul>\n<p>\u8fd4\u56de\u503c\uff1a<br \/>\n<span class=\"codefrag\">\u6210\u529f\u8fd4\u56de0\uff0c\u5931\u8d25\u8fd4\u56de-1\u3002<\/span><\/p>\n<h3 class=\"h4\">chgrp<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -chgrp [-R] GROUP URI [URI \u2026]<\/span> Change group association of files. With <span class=\"codefrag\">-R<\/span>, make the change recursively through the directory structure. The user must be the owner of files, or else a super-user. Additional information is in the <a href=\"http:\/\/hadoop.apache.org\/docs\/r1.0.4\/cn\/hdfs_permissions_guide.html\">Permissions User Guide<\/a>. &#8211;&gt;<\/p>\n<p>\u6539\u53d8\u6587\u4ef6\u6240\u5c5e\u7684\u7ec4\u3002\u4f7f\u7528<span class=\"codefrag\">-R<\/span>\u5c06\u4f7f\u6539\u53d8\u5728\u76ee\u5f55\u7ed3\u6784\u4e0b\u9012\u5f52\u8fdb\u884c\u3002\u547d\u4ee4\u7684\u4f7f\u7528\u8005\u5fc5\u987b\u662f\u6587\u4ef6\u7684\u6240\u6709\u8005\u6216\u8005\u8d85\u7ea7\u7528\u6237\u3002\u66f4\u591a\u7684\u4fe1\u606f\u8bf7\u53c2\u89c1<a href=\"http:\/\/hadoop.apache.org\/docs\/r1.0.4\/cn\/hdfs_permissions_guide.html\">HDFS\u6743\u9650\u7528\u6237\u6307\u5357<\/a>\u3002<\/p>\n<h3 class=\"h4\">chmod<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -chmod [-R] &lt;MODE[,MODE]&#8230; | OCTALMODE&gt; URI [URI \u2026]<\/span><\/p>\n<p>\u6539\u53d8\u6587\u4ef6\u7684\u6743\u9650\u3002\u4f7f\u7528<span class=\"codefrag\">-R<\/span>\u5c06\u4f7f\u6539\u53d8\u5728\u76ee\u5f55\u7ed3\u6784\u4e0b\u9012\u5f52\u8fdb\u884c\u3002\u547d\u4ee4\u7684\u4f7f\u7528\u8005\u5fc5\u987b\u662f\u6587\u4ef6\u7684\u6240\u6709\u8005\u6216\u8005\u8d85\u7ea7\u7528\u6237\u3002\u66f4\u591a\u7684\u4fe1\u606f\u8bf7\u53c2\u89c1<a href=\"http:\/\/hadoop.apache.org\/docs\/r1.0.4\/cn\/hdfs_permissions_guide.html\">HDFS\u6743\u9650\u7528\u6237\u6307\u5357<\/a>\u3002<\/p>\n<h3 class=\"h4\">chown<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -chown [-R] [OWNER][:[GROUP]] URI [URI ]<\/span><\/p>\n<p>\u6539\u53d8\u6587\u4ef6\u7684\u62e5\u6709\u8005\u3002\u4f7f\u7528<span class=\"codefrag\">-R<\/span>\u5c06\u4f7f\u6539\u53d8\u5728\u76ee\u5f55\u7ed3\u6784\u4e0b\u9012\u5f52\u8fdb\u884c\u3002\u547d\u4ee4\u7684\u4f7f\u7528\u8005\u5fc5\u987b\u662f\u8d85\u7ea7\u7528\u6237\u3002\u66f4\u591a\u7684\u4fe1\u606f\u8bf7\u53c2\u89c1<a href=\"http:\/\/hadoop.apache.org\/docs\/r1.0.4\/cn\/hdfs_permissions_guide.html\">HDFS\u6743\u9650\u7528\u6237\u6307\u5357<\/a>\u3002<\/p>\n<h3 class=\"h4\">copyFromLocal<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -copyFromLocal &lt;localsrc&gt; URI<\/span><\/p>\n<p>\u9664\u4e86\u9650\u5b9a\u6e90\u8def\u5f84\u662f\u4e00\u4e2a\u672c\u5730\u6587\u4ef6\u5916\uff0c\u548c<a href=\"http:\/\/hadoop.apache.org\/docs\/r1.0.4\/cn\/hdfs_shell.html#putlink\"><strong>put<\/strong><\/a>\u547d\u4ee4\u76f8\u4f3c\u3002<\/p>\n<h3 class=\"h4\">copyToLocal<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -copyToLocal [-ignorecrc] [-crc] URI &lt;localdst&gt;<\/span><\/p>\n<p>\u9664\u4e86\u9650\u5b9a\u76ee\u6807\u8def\u5f84\u662f\u4e00\u4e2a\u672c\u5730\u6587\u4ef6\u5916\uff0c\u548c<a href=\"http:\/\/hadoop.apache.org\/docs\/r1.0.4\/cn\/hdfs_shell.html#getlink\"><strong>get<\/strong><\/a>\u547d\u4ee4\u7c7b\u4f3c\u3002<\/p>\n<h3 class=\"h4\">cp<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -cp URI [URI \u2026] &lt;dest&gt;<\/span><\/p>\n<p>\u5c06\u6587\u4ef6\u4ece\u6e90\u8def\u5f84\u590d\u5236\u5230\u76ee\u6807\u8def\u5f84\u3002\u8fd9\u4e2a\u547d\u4ee4\u5141\u8bb8\u6709\u591a\u4e2a\u6e90\u8def\u5f84\uff0c\u6b64\u65f6\u76ee\u6807\u8def\u5f84\u5fc5\u987b\u662f\u4e00\u4e2a\u76ee\u5f55\u3002<br \/>\n\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li><span class=\"codefrag\">hadoop fs -cp \/user\/hadoop\/file1 \/user\/hadoop\/file2<\/span><\/li>\n<li><span class=\"codefrag\">hadoop fs -cp \/user\/hadoop\/file1 \/user\/hadoop\/file2 \/user\/hadoop\/dir<\/span><\/li>\n<\/ul>\n<p>\u8fd4\u56de\u503c\uff1a<\/p>\n<p><span class=\"codefrag\">\u6210\u529f\u8fd4\u56de0\uff0c\u5931\u8d25\u8fd4\u56de-1\u3002<\/span><\/p>\n<h3 class=\"h4\">du<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -du URI [URI \u2026]<\/span><\/p>\n<p>\u663e\u793a\u76ee\u5f55\u4e2d\u6240\u6709\u6587\u4ef6\u7684\u5927\u5c0f\uff0c\u6216\u8005\u5f53\u53ea\u6307\u5b9a\u4e00\u4e2a\u6587\u4ef6\u65f6\uff0c\u663e\u793a\u6b64\u6587\u4ef6\u7684\u5927\u5c0f\u3002<br \/>\n\u793a\u4f8b\uff1a<br \/>\n<span class=\"codefrag\">hadoop fs -du \/user\/hadoop\/dir1 \/user\/hadoop\/file1 hdfs:\/\/host:port\/user\/hadoop\/dir1<\/span><br \/>\n\u8fd4\u56de\u503c\uff1a<br \/>\n<span class=\"codefrag\">\u6210\u529f\u8fd4\u56de0\uff0c\u5931\u8d25\u8fd4\u56de-1\u3002<\/span><\/p>\n<h3 class=\"h4\">dus<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -dus &lt;args&gt;<\/span><\/p>\n<p>\u663e\u793a\u6587\u4ef6\u7684\u5927\u5c0f\u3002<\/p>\n<h3 class=\"h4\">expunge<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -expunge<\/span><\/p>\n<p>\u6e05\u7a7a\u56de\u6536\u7ad9\u3002\u8bf7\u53c2\u8003<a href=\"http:\/\/hadoop.apache.org\/docs\/r1.0.4\/cn\/hdfs_design.html\">HDFS\u8bbe\u8ba1<\/a>\u6587\u6863\u4ee5\u83b7\u53d6\u66f4\u591a\u5173\u4e8e\u56de\u6536\u7ad9\u7279\u6027\u7684\u4fe1\u606f\u3002<\/p>\n<h3 class=\"h4\">get<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -get [-ignorecrc] [-crc] &lt;src&gt; &lt;localdst&gt;<\/span><\/p>\n<p>\u590d\u5236\u6587\u4ef6\u5230\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\u3002\u53ef\u7528<span class=\"codefrag\">-ignorecrc<\/span>\u9009\u9879\u590d\u5236CRC\u6821\u9a8c\u5931\u8d25\u7684\u6587\u4ef6\u3002\u4f7f\u7528<span class=\"codefrag\">-crc<\/span>\u9009\u9879\u590d\u5236\u6587\u4ef6\u4ee5\u53caCRC\u4fe1\u606f\u3002<\/p>\n<p>\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li><span class=\"codefrag\">hadoop fs -get \/user\/hadoop\/file localfile<\/span><\/li>\n<li><span class=\"codefrag\">hadoop fs -get hdfs:\/\/host:port\/user\/hadoop\/file localfile<\/span><\/li>\n<\/ul>\n<p>\u8fd4\u56de\u503c\uff1a<\/p>\n<p><span class=\"codefrag\">\u6210\u529f\u8fd4\u56de0\uff0c\u5931\u8d25\u8fd4\u56de-1\u3002<\/span><\/p>\n<h3 class=\"h4\">getmerge<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -getmerge &lt;src&gt; &lt;localdst&gt; [addnl]<\/span><\/p>\n<p>\u63a5\u53d7\u4e00\u4e2a\u6e90\u76ee\u5f55\u548c\u4e00\u4e2a\u76ee\u6807\u6587\u4ef6\u4f5c\u4e3a\u8f93\u5165\uff0c\u5e76\u4e14\u5c06\u6e90\u76ee\u5f55\u4e2d\u6240\u6709\u7684\u6587\u4ef6\u8fde\u63a5\u6210\u672c\u5730\u76ee\u6807\u6587\u4ef6\u3002<span class=\"codefrag\">addnl<\/span>\u662f\u53ef\u9009\u7684\uff0c\u7528\u4e8e\u6307\u5b9a\u5728\u6bcf\u4e2a\u6587\u4ef6\u7ed3\u5c3e\u6dfb\u52a0\u4e00\u4e2a\u6362\u884c\u7b26\u3002<\/p>\n<h3 class=\"h4\">ls<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -ls &lt;args&gt;<\/span><\/p>\n<p>\u5982\u679c\u662f\u6587\u4ef6\uff0c\u5219\u6309\u7167\u5982\u4e0b\u683c\u5f0f\u8fd4\u56de\u6587\u4ef6\u4fe1\u606f\uff1a<br \/>\n<span class=\"codefrag\">\u6587\u4ef6\u540d &lt;\u526f\u672c\u6570&gt; \u6587\u4ef6\u5927\u5c0f \u4fee\u6539\u65e5\u671f \u4fee\u6539\u65f6\u95f4 \u6743\u9650 \u7528\u6237ID \u7ec4ID<\/span><br \/>\n\u5982\u679c\u662f\u76ee\u5f55\uff0c\u5219\u8fd4\u56de\u5b83\u76f4\u63a5\u5b50\u6587\u4ef6\u7684\u4e00\u4e2a\u5217\u8868\uff0c\u5c31\u50cf\u5728Unix\u4e2d\u4e00\u6837\u3002\u76ee\u5f55\u8fd4\u56de\u5217\u8868\u7684\u4fe1\u606f\u5982\u4e0b\uff1a<br \/>\n<span class=\"codefrag\">\u76ee\u5f55\u540d &lt;dir&gt; \u4fee\u6539\u65e5\u671f \u4fee\u6539\u65f6\u95f4 \u6743\u9650 \u7528\u6237ID \u7ec4ID<\/span><br \/>\n\u793a\u4f8b\uff1a<br \/>\n<span class=\"codefrag\">hadoop fs -ls \/user\/hadoop\/file1 \/user\/hadoop\/file2 hdfs:\/\/host:port\/user\/hadoop\/dir1 \/nonexistentfile<\/span><br \/>\n\u8fd4\u56de\u503c\uff1a<br \/>\n<span class=\"codefrag\">\u6210\u529f\u8fd4\u56de0\uff0c\u5931\u8d25\u8fd4\u56de-1\u3002<\/span><\/p>\n<h3 class=\"h4\">lsr<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -lsr &lt;args&gt;<\/span><br \/>\n<span class=\"codefrag\">ls<\/span>\u547d\u4ee4\u7684\u9012\u5f52\u7248\u672c\u3002\u7c7b\u4f3c\u4e8eUnix\u4e2d\u7684<span class=\"codefrag\">ls -R<\/span>\u3002<\/p>\n<h3 class=\"h4\">mkdir<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -mkdir &lt;paths&gt;<\/span><\/p>\n<p>\u63a5\u53d7\u8def\u5f84\u6307\u5b9a\u7684uri\u4f5c\u4e3a\u53c2\u6570\uff0c\u521b\u5efa\u8fd9\u4e9b\u76ee\u5f55\u3002\u5176\u884c\u4e3a\u7c7b\u4f3c\u4e8eUnix\u7684mkdir -p\uff0c\u5b83\u4f1a\u521b\u5efa\u8def\u5f84\u4e2d\u7684\u5404\u7ea7\u7236\u76ee\u5f55\u3002<\/p>\n<p>\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li><span class=\"codefrag\">hadoop fs -mkdir \/user\/hadoop\/dir1 \/user\/hadoop\/dir2<\/span><\/li>\n<li><span class=\"codefrag\">hadoop fs -mkdir hdfs:\/\/host1:port1\/user\/hadoop\/dir hdfs:\/\/host2:port2\/user\/hadoop\/dir<\/span><\/li>\n<\/ul>\n<p>\u8fd4\u56de\u503c\uff1a<\/p>\n<p><span class=\"codefrag\">\u6210\u529f\u8fd4\u56de0\uff0c\u5931\u8d25\u8fd4\u56de-1\u3002<\/span><\/p>\n<h3 class=\"h4\">movefromLocal<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1adfs -moveFromLocal &lt;src&gt; &lt;dst&gt;<\/span><\/p>\n<p>\u8f93\u51fa\u4e00\u4e2a\u201dnot implemented\u201c\u4fe1\u606f\u3002<\/p>\n<h3 class=\"h4\">mv<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -mv URI [URI \u2026] &lt;dest&gt;<\/span><\/p>\n<p>\u5c06\u6587\u4ef6\u4ece\u6e90\u8def\u5f84\u79fb\u52a8\u5230\u76ee\u6807\u8def\u5f84\u3002\u8fd9\u4e2a\u547d\u4ee4\u5141\u8bb8\u6709\u591a\u4e2a\u6e90\u8def\u5f84\uff0c\u6b64\u65f6\u76ee\u6807\u8def\u5f84\u5fc5\u987b\u662f\u4e00\u4e2a\u76ee\u5f55\u3002\u4e0d\u5141\u8bb8\u5728\u4e0d\u540c\u7684\u6587\u4ef6\u7cfb\u7edf\u95f4\u79fb\u52a8\u6587\u4ef6\u3002<br \/>\n\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li><span class=\"codefrag\">hadoop fs -mv \/user\/hadoop\/file1 \/user\/hadoop\/file2<\/span><\/li>\n<li><span class=\"codefrag\">hadoop fs -mv hdfs:\/\/host:port\/file1 hdfs:\/\/host:port\/file2 hdfs:\/\/host:port\/file3 hdfs:\/\/host:port\/dir1<\/span><\/li>\n<\/ul>\n<p>\u8fd4\u56de\u503c\uff1a<\/p>\n<p><span class=\"codefrag\">\u6210\u529f\u8fd4\u56de0\uff0c\u5931\u8d25\u8fd4\u56de-1\u3002<\/span><\/p>\n<h3 class=\"h4\">put<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -put &lt;localsrc&gt; &#8230; &lt;dst&gt;<\/span><\/p>\n<p>\u4ece\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\u4e2d\u590d\u5236\u5355\u4e2a\u6216\u591a\u4e2a\u6e90\u8def\u5f84\u5230\u76ee\u6807\u6587\u4ef6\u7cfb\u7edf\u3002\u4e5f\u652f\u6301\u4ece\u6807\u51c6\u8f93\u5165\u4e2d\u8bfb\u53d6\u8f93\u5165\u5199\u5165\u76ee\u6807\u6587\u4ef6\u7cfb\u7edf\u3002<\/p>\n<ul>\n<li><span class=\"codefrag\">hadoop fs -put localfile \/user\/hadoop\/hadoopfile<\/span><\/li>\n<li><span class=\"codefrag\">hadoop fs -put localfile1 localfile2 \/user\/hadoop\/hadoopdir<\/span><\/li>\n<li><span class=\"codefrag\">hadoop fs -put localfile hdfs:\/\/host:port\/hadoop\/hadoopfile<\/span><\/li>\n<li><span class=\"codefrag\">hadoop fs -put &#8211; hdfs:\/\/host:port\/hadoop\/hadoopfile<\/span><br \/>\n\u4ece\u6807\u51c6\u8f93\u5165\u4e2d\u8bfb\u53d6\u8f93\u5165\u3002<\/li>\n<\/ul>\n<p>\u8fd4\u56de\u503c\uff1a<\/p>\n<p><span class=\"codefrag\">\u6210\u529f\u8fd4\u56de0\uff0c\u5931\u8d25\u8fd4\u56de-1\u3002<\/span><\/p>\n<h3 class=\"h4\">rm<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -rm URI [URI \u2026]<\/span><\/p>\n<p>\u5220\u9664\u6307\u5b9a\u7684\u6587\u4ef6\u3002\u53ea\u5220\u9664\u975e\u7a7a\u76ee\u5f55\u548c\u6587\u4ef6\u3002\u8bf7\u53c2\u8003rmr\u547d\u4ee4\u4e86\u89e3\u9012\u5f52\u5220\u9664\u3002<br \/>\n\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li><span class=\"codefrag\">hadoop fs -rm hdfs:\/\/host:port\/file \/user\/hadoop\/emptydir<\/span><\/li>\n<\/ul>\n<p>\u8fd4\u56de\u503c\uff1a<\/p>\n<p><span class=\"codefrag\">\u6210\u529f\u8fd4\u56de0\uff0c\u5931\u8d25\u8fd4\u56de-1\u3002<\/span><\/p>\n<h3 class=\"h4\">rmr<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -rmr URI [URI \u2026]<\/span><\/p>\n<p>delete\u7684\u9012\u5f52\u7248\u672c\u3002<br \/>\n\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li><span class=\"codefrag\">hadoop fs -rmr \/user\/hadoop\/dir<\/span><\/li>\n<li><span class=\"codefrag\">hadoop fs -rmr hdfs:\/\/host:port\/user\/hadoop\/dir<\/span><\/li>\n<\/ul>\n<p>\u8fd4\u56de\u503c\uff1a<\/p>\n<p><span class=\"codefrag\">\u6210\u529f\u8fd4\u56de0\uff0c\u5931\u8d25\u8fd4\u56de-1\u3002<\/span><\/p>\n<h3 class=\"h4\">setrep<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -setrep [-R] &lt;path&gt;<\/span><\/p>\n<p>\u6539\u53d8\u4e00\u4e2a\u6587\u4ef6\u7684\u526f\u672c\u7cfb\u6570\u3002-R\u9009\u9879\u7528\u4e8e\u9012\u5f52\u6539\u53d8\u76ee\u5f55\u4e0b\u6240\u6709\u6587\u4ef6\u7684\u526f\u672c\u7cfb\u6570\u3002<\/p>\n<p>\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li><span class=\"codefrag\">hadoop fs -setrep -w 3 -R \/user\/hadoop\/dir1<\/span><\/li>\n<\/ul>\n<p>\u8fd4\u56de\u503c\uff1a<\/p>\n<p><span class=\"codefrag\">\u6210\u529f\u8fd4\u56de0\uff0c\u5931\u8d25\u8fd4\u56de-1\u3002<\/span><\/p>\n<h3 class=\"h4\">stat<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -stat URI [URI \u2026]<\/span><\/p>\n<p>\u8fd4\u56de\u6307\u5b9a\u8def\u5f84\u7684\u7edf\u8ba1\u4fe1\u606f\u3002<\/p>\n<p>\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li><span class=\"codefrag\">hadoop fs -stat path<\/span><\/li>\n<\/ul>\n<p>\u8fd4\u56de\u503c\uff1a<br \/>\n<span class=\"codefrag\">\u6210\u529f\u8fd4\u56de0\uff0c\u5931\u8d25\u8fd4\u56de-1\u3002<\/span><\/p>\n<h3 class=\"h4\">tail<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -tail [-f] URI<\/span><\/p>\n<p>\u5c06\u6587\u4ef6\u5c3e\u90e81K\u5b57\u8282\u7684\u5185\u5bb9\u8f93\u51fa\u5230stdout\u3002\u652f\u6301-f\u9009\u9879\uff0c\u884c\u4e3a\u548cUnix\u4e2d\u4e00\u81f4\u3002<\/p>\n<p>\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li><span class=\"codefrag\">hadoop fs -tail pathname<\/span><\/li>\n<\/ul>\n<p>\u8fd4\u56de\u503c\uff1a<br \/>\n<span class=\"codefrag\">\u6210\u529f\u8fd4\u56de0\uff0c\u5931\u8d25\u8fd4\u56de-1\u3002<\/span><\/p>\n<h3 class=\"h4\">test<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -test -[ezd] URI<\/span><\/p>\n<p>\u9009\u9879\uff1a<br \/>\n-e \u68c0\u67e5\u6587\u4ef6\u662f\u5426\u5b58\u5728\u3002\u5982\u679c\u5b58\u5728\u5219\u8fd4\u56de0\u3002<br \/>\n-z \u68c0\u67e5\u6587\u4ef6\u662f\u5426\u662f0\u5b57\u8282\u3002\u5982\u679c\u662f\u5219\u8fd4\u56de0\u3002<br \/>\n-d \u5982\u679c\u8def\u5f84\u662f\u4e2a\u76ee\u5f55\uff0c\u5219\u8fd4\u56de1\uff0c\u5426\u5219\u8fd4\u56de0\u3002<\/p>\n<p>\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li><span class=\"codefrag\">hadoop fs -test -e filename<\/span><\/li>\n<\/ul>\n<h3 class=\"h4\">text<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -text &lt;src&gt;<\/span><\/p>\n<p>\u5c06\u6e90\u6587\u4ef6\u8f93\u51fa\u4e3a\u6587\u672c\u683c\u5f0f\u3002\u5141\u8bb8\u7684\u683c\u5f0f\u662fzip\u548cTextRecordInputStream\u3002<\/p>\n<h3 class=\"h4\">touchz<\/h3>\n<p><span class=\"codefrag\">\u4f7f\u7528\u65b9\u6cd5\uff1ahadoop fs -touchz URI [URI \u2026]<\/span><\/p>\n<p>\u521b\u5efa\u4e00\u4e2a0\u5b57\u8282\u7684\u7a7a\u6587\u4ef6\u3002<\/p>\n<p>\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li><span class=\"codefrag\">hadoop -touchz pathname<\/span><\/li>\n<\/ul>\n<p>\u8fd4\u56de\u503c\uff1a<br \/>\n<span class=\"codefrag\">\u6210\u529f\u8fd4\u56de0\uff0c\u5931\u8d25\u8fd4\u56de-1\u3002<\/span><\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<p>\u6458\u81ea\uff1ahttp:\/\/hadoop.apache.org\/docs\/r1.0.4\/cn\/hdfs_shell.html<\/p>\n","protected":false},"excerpt":{"rendered":"<p>FS Shell \u8c03\u7528\u6587\u4ef6\u7cfb\u7edf(FS)Shell\u547d\u4ee4\u5e94\u4f7f\u7528 bin\/hadoop fs &lt;args&#038;gt [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[230],"tags":[362,231,65],"_links":{"self":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/741"}],"collection":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=741"}],"version-history":[{"count":0,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/741\/revisions"}],"wp:attachment":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=741"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=741"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=741"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}