{"id":2563,"date":"2021-02-23T09:55:54","date_gmt":"2021-02-23T01:55:54","guid":{"rendered":"https:\/\/nj.transwarp.cn:8180\/?p=2563"},"modified":"2021-02-23T09:56:36","modified_gmt":"2021-02-23T01:56:36","slug":"hadoop-%e7%9a%84%e5%b8%b8%e7%94%a8%e6%96%87%e4%bb%b6%e7%b3%bb%e7%bb%9fshell","status":"publish","type":"post","link":"https:\/\/kbwp.transwarp.cn\/?p=2563","title":{"rendered":"hadoop \u7684\u5e38\u7528\u6587\u4ef6\u7cfb\u7edfshell"},"content":{"rendered":"<h3>\u6982\u8981\u8bf4\u660e<\/h3>\n<hr \/>\n<p>\u6587\u4ef6\u7cfb\u7edf\uff08FS\uff09shell\uff08\u4ee5\u4e0b\u7b80\u79f0\u4e3a FS Shell\uff09\u5305\u542b\u5404\u79cd\u7c7b\u4f3c\u4e8e shell \u7684\u547d\u4ee4\uff0cFS Shell\u4e2d\u7684\u5927\u591a\u6570\u547d\u4ee4\u7684\u884c\u4e3a\u7c7b\u4f3c\u4e8e\u76f8\u5e94\u7684 Unix \u547d\u4ee4\u3002\u9519\u8bef\u4fe1\u606f\u5c06\u53d1\u9001\u5230stderr\uff0c\u6807\u51c6\u8f93\u51fa\u5c06\u53d1\u9001\u5230stdout\u3002\u8fd9\u4e9b\u547d\u4ee4\u53ef\u76f4\u63a5\u4e0eHadoop\u5206\u5e03\u5f0f\u6587\u4ef6\u7cfb\u7edf\uff08HDFS\uff09\u4ee5\u53caHadoop\u652f\u6301\u7684\u5176\u4ed6\u6587\u4ef6\u7cfb\u7edf\uff08\u4f8b\u5982\u672c\u5730FS\uff0cWebHDFS\uff0cS3 FS\u7b49\uff09\u8fdb\u884c\u4ea4\u4e92\u3002\u672c\u6587\u7b80\u5355\u4ecb\u7ecd\u51e0\u79cd\u5e38\u7528\u7684FS shell\u3002<br \/>\nFS shell \u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u8c03\u7528\uff1a<\/p>\n<pre><code class=\"language-shell\">bin\/hadoop fs <args>\n# bin\u8def\u5f84\u4f4d\u4e8e\u5ba2\u6237\u7aef\u7684 hadoop \u76ee\u5f55\u4e0b\uff0c\u5728TDH \u4e2d\u4f7f\u7528\u65f6\u53ef\u4ee5\u53c2\u8003 [\u51c6\u5907TDH\u5ba2\u6237\u7aef\u73af\u5883](https:\/\/nj.transwarp.cn:8180\/?p=1105 \"\u51c6\u5907TDH\u5ba2\u6237\u7aef\u73af\u5883\")\n# \u7531\u4e8e TDH \u4f7f\u7528\u7684\u662f HDFS \u6587\u4ef6\u7cfb\u7edf\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528 bin\/hdfs dfs \u8c03\u7528\uff1b<\/code><\/pre>\n<p>\u6240\u6709\u7684 FS Shell \u90fd\u9700\u8981\u5e26\u6587\u4ef6\u7cfb\u7edf\u8def\u5f84 URI \u53c2\u6570\uff0cURI\u7684\u683c\u5f0f\u4e00\u822c\u662fscheme\/\/authority\/path\uff0c\u5bf9\u4e8e HDFS\uff0c\u683c\u5f0f\u4e00\u822c\u662f hdfs:\/\/nameservice1\/inceptor1\/\uff0c\u5176\u4e2d schema \u548c authority \u662f\u53ef\u9009\u7684\uff0c\u5982\u679c\u4e0d\u6307\u5b9a\uff0c\u5219\u4f7f\u7528\u914d\u7f6e\u4e2d\u9ed8\u8ba4\u7684\u53c2\u6570\u3002\u6587\u4ef6\u7cfb\u7edf\u8def\u5f84\u53c2\u6570\u53ef\u4ee5\u6307\u5b9a\u4e3a hdfs:\/\/nameservice1\/inceptor1\/\uff0c\u4e5f\u53ef\u4ee5\u7b80\u5355\u7684\u6307\u5b9a\u4e3a \/incpeotr1\/\u3002<br \/>\n\u6587\u4ef6\u7cfb\u7edf\u8def\u5f84\u53c2\u6570\u4e00\u822c\u5efa\u8bae\u4f7f\u7528\u7edd\u5bf9\u8def\u5f84\uff0c\u5f53\u7136\u4e5f\u53ef\u4ee5\u4f7f\u7528\u76f8\u5bf9\u8def\u5f84\uff0c\u76f8\u5bf9\u8def\u5f84\u662f\u5f53\u524d hadoop \u7528\u6237\u7684\u4e3b\u76ee\u5f55\u3002\u6bd4\u5982\u4ee5\u4e0b\u6848\u4f8b\uff1a\u5f53\u524d\u7528\u6237\u662f hdfs\uff0c\u8bbf\u95ee\u7684\u65f6\u5019\u53ef\u4ee5\u76f4\u63a5\u770b\u5230\u5f53\u524d\u7528\u6237\u7684\u4e3b\u76ee\u5f55\u3002<\/p>\n<pre><code class=\"language-shell\">$ echo $HADOOP_USER_NAME\nhdfs\n$ hdfs dfs -ls\n2020-03-04 14:48:56,023 INFO util.KerberosUtil: Using principal pattern: HTTP\/_HOST\nFound 1 items\ndrwx------   - tableau hadoop          0 2020-03-04 10:10 .Trash<\/code><\/pre>\n<h3>\u8be6\u7ec6\u8bf4\u660e<\/h3>\n<hr \/>\n<h4>appendToFile<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -appendToFile <localsrc> &#8230; <dst><br \/>\n\u8bf4\u660e\uff1a\u5c06\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u672c\u5730\u6587\u4ef6\u8ffd\u52a0\u5230\u76ee\u6807\u6587\u4ef6\u7cfb\u7edf\uff0c\u4e5f\u53ef\u4ee5\u5c06\u6807\u51c6\u8f93\u5165\u8ffd\u52a0\u5230\u76ee\u6807\u6587\u4ef6\u7cfb\u7edf\uff1b<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1a<strong><code>$ hadoop fs -appendToFile srcfile.txt \/fsshell\/dstfile.txt<\/code><\/strong><br \/>\n\u5c06\u672c\u5730\u7684 srcfile.txt \u7684\u5185\u5bb9\uff0c\u8ffd\u52a0\u5230 hdfs \u7684 \/fsshell\/dstfile.txt \u6587\u4ef6\u4e2d<\/li>\n<li>\u6848\u4f8b2\uff1a<strong><code>$ hadoop fs -appendToFile - \/fsshell\/dstfile.txt<\/code><\/strong><br \/>\n\u5c06\u7ec8\u7aef\u6807\u51c6\u8f93\u5165\u7684\u5185\u5bb9\uff0c\u8ffd\u52a0\u5230 hdfs \u7684 \/fsshell\/dstfile.txt \u6587\u4ef6\u4e2d<\/li>\n<\/ul>\n<h4>cat<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -cat [-ignoreCrc] URI [URI &#8230;]<br \/>\n\u8bf4\u660e\uff1a\u5c06\u6587\u4ef6\u7cfb\u7edf\u7684\u6587\u4ef6\u590d\u5236\u5230\u6807\u51c6\u8f93\u51fa\uff0c\u4e5f\u5c31\u662f\u67e5\u770b\u6587\u4ef6\u5185\u5bb9\u3002\u5176\u4e2d-ignoreCrc\u9009\u9879\u662f\u7981\u7528checkshum\u9a8c\u8bc1\uff0c\u53ef\u9009\u53c2\u6570\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -cat \/fsshell\/dstfile.txt<br \/>\n\u5c06\u6587\u4ef6\u7cfb\u7edf\u7684dstfile.txt\u7684\u5185\u5bb9\u8f93\u51fa\u5230\u6807\u51c6\u8f93\u51fa\uff0c\u4e5f\u5373\u662f\u67e5\u770b\u6587\u4ef6\u7cfb\u7edf\u7684 dstfile.txt \u7684\u5185\u5bb9<\/li>\n<\/ul>\n<h4>checksum<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -checksum URI<br \/>\n\u8bf4\u660e\uff1a\u8fd4\u56de\u6587\u4ef6\u7684\u6821\u9a8c\u548c\u4fe1\u606f<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -checksum \/fsshell\/dstfile.txt<br \/>\n\u8ba1\u7b97\u6587\u4ef6\u7cfb\u7edf dstfile.txt \u7684 checksum \u7ed3\u679c<\/li>\n<\/ul>\n<h4>chgrp<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -chgrp [-R] GROUP URI [URI &#8230;]<br \/>\n\u8bf4\u660e\uff1a\u66f4\u6539\u6587\u4ef6\u7684\u7ec4\u5173\u8054\u3002\u7528\u6237\u5fc5\u987b\u662f\u6587\u4ef6\u7684\u6240\u6709\u8005\uff0c\u6216\u8005\u662f\u8d85\u7ea7\u7528\u6237\u3002-R\u9009\u9879\u662f\u5c06\u901a\u8fc7\u76ee\u5f55\u7ed3\u6784\u9012\u5f52\u4fee\u6539\u7ec4\u5173\u8054\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -chgrp hbase \/fsshell\/dstfile.txt<br \/>\n\u5c06\u6587\u4ef6\u7cfb\u7edf\u7684 dstfile.txt \u7684\u6240\u5c5e\u7ec4\u4fee\u6539\u4e3a hbase \u7ec4\u3002<\/li>\n<\/ul>\n<h4>chmod<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -chmod [-R] &lt;MODE [\uff0cMODE] &#8230; | OCTALMODE&gt; URI [URI &#8230;]<br \/>\n\u8bf4\u660e\uff1a\u66f4\u6539\u6587\u4ef6\u7684\u6743\u9650\uff0c\u7528\u6237\u5fc5\u987b\u662f\u6587\u4ef6\u7684\u6240\u6709\u8005\uff0c\u6216\u8005\u662f\u8d85\u7ea7\u7528\u6237\u3002-R\u9009\u9879\u662f\u5c06\u901a\u8fc7\u76ee\u5f55\u7ed3\u6784\u9012\u5f52\u4fee\u6539\u6743\u9650\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -chmod 755 \/fsshell\/dstfile.txt<br \/>\n\u4fee\u6539\u6587\u4ef6\u7cfb\u7edf\u7684 \/fsshelld\/stfile.txt \u7684 \u6743\u9650\u4fee\u6539\u4e3a755<\/li>\n<\/ul>\n<h4>chown<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -chown [-R] [OWNER] [\uff1a[GROUP]] URI [URI]<br \/>\n\u8bf4\u660e\uff1a\u66f4\u6539\u6587\u4ef6\u7684\u6240\u6709\u8005\uff0c\u6267\u884c\u7528\u6237\u5fc5\u987b\u662f\u6587\u4ef6\u7684\u6240\u6709\u8005\uff0c\u6216\u8005\u662f\u8d85\u7ea7\u7528\u6237\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -chown tableau:hbase \/fsshell\/dstfile.txt<br \/>\n\u4fee\u6539\u6587\u4ef6\u7cfb\u7edf\u7684 \/fsshelld\/stfile.txt \u7684\u6240\u6709\u8005\u4e3a tableau\uff0c\u6240\u5c5e\u7ec4\u4e3a hbase<\/li>\n<\/ul>\n<h4>copyFromLocal<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -copyFromLocal <localsrc> URI<br \/>\n\u8bf4\u660e\uff1a\u4e0efs -put\u547d\u4ee4\u7c7b\u4f3c\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\u6e90\u6587\u4ef6\u4ec5\u9650\u4e8e\u672c\u5730\u6587\u4ef6\u5f15\u7528\u3002\u800c put \u53ef\u4ee5\u662fhdfs\u4e0a\u7684\u6587\u4ef6\uff0c\u5e76\u4e14\u4f18\u5148\u68c0\u6d4b hdfs \u6587\u4ef6.<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -copyFromLocal \/root\/copyfile.txt \/fsshell\/<br \/>\n\u5c06\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\u7684 copyfile.txt copy \u5230 fsshell \u7cfb\u7edf\u7684<br \/>\n-p\uff1a\u4fdd\u7559\u8bbf\u95ee\u548c\u4fee\u6539\u65f6\u95f4\uff0c\u6240\u6709\u6743\u548c\u6743\u9650\u3002\uff08\u5047\u8bbe\u6743\u9650\u53ef\u4ee5\u5728\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\u548c hdfs \u4e4b\u95f4\u4f20\u64ad\uff09<br \/>\n-f\uff1a\u5982\u679c\u76ee\u7684\u5730\u5df2\u7ecf\u5b58\u5728\uff0c\u5219\u5c06\u5176\u8986\u76d6\u3002<br \/>\n-l\uff1a\u5141\u8bb8DataNode\u5c06\u6587\u4ef6\u5ef6\u8fdf\u4fdd\u5b58\u5230\u78c1\u76d8\uff0c\u5c06\u590d\u5236\u56e0\u5b50\u5f3a\u5236\u4e3a1\u3002\u6b64\u6807\u5fd7\u5c06\u5bfc\u81f4\u6301\u4e45\u6027\u964d\u4f4e\u3002\u8c28\u614e\u4f7f\u7528\u3002<br \/>\n-d\uff1a\u8df3\u8fc7\u540e\u7f00\u4e3a._COPYING_\u7684\u4e34\u65f6\u6587\u4ef6\u7684\u521b\u5efa\u3002<\/li>\n<\/ul>\n<h4>copyToLocal<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -copyToLocal [-ignorecrc] [-crc] URI <localdst><br \/>\n\u8bf4\u660e\uff1a\u4e0eget\u547d\u4ee4\u7c7b\u4f3c\uff0ccopyToLocal\u76ee\u6807\u4ec5\u9650\u4e8e\u672c\u5730\u6587\u4ef6\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -copyToLocal \/fsshell\/copyfile.txt \/tmp\/<br \/>\n\u5c06\/fsshell\/copyfile.txt \u6587\u4ef6 copy \u5230\u672c\u5730\u7684 \/tmp\/\u76ee\u5f55\u4e0b<\/li>\n<\/ul>\n<h4>count<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -count [-q] [-h]  [-t [<storage type>]] [-e] <paths>\n\u8bf4\u660e\uff1a\u8ba1\u7b97\u4e0e\u6307\u5b9a\u6587\u4ef6\u6a21\u5f0f\u5339\u914d\u7684\u8def\u5f84\u4e0b\u7684\u76ee\u5f55\uff0c\u6587\u4ef6\u548c\u5b57\u8282\u6570\u3002\u83b7\u53d6\u914d\u989d\u548c\u4f7f\u7528\u60c5\u51b5\u3002\u5177\u6709-count\u7684\u8f93\u51fa\u5217\u662f\uff1aDIR_COUNT\uff0cFILE_COUNT\uff0cCONTENT_SIZE\uff0cPATHNAME\uff1b<br \/>\n\u5e38\u7528\u53c2\u6570\uff1a<br \/>\n-q\u8868\u793a\u663e\u793a\u914d\u989d\uff0c<br \/>\n-h\u9009\u9879\u4ee5\u4eba\u6027\u5316\u53ef\u8bfb\u7684\u683c\u5f0f\u663e\u793a\u5927\u5c0f\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -count \/eastmoney\/<br \/>\n\u7edf\u8ba1\u6587\u4ef6\u7cfb\u7edf \/eastmoney\/ \u4e0b\u7684DIR_COUNT\uff0cFILE_COUNT\uff0cCONTENT_SIZE\uff0cPATHNAME<\/li>\n<\/ul>\n<h4>cp<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -cp [-f] [-p | -p [topax]] URI [URI &#8230;] &lt;\u76ee\u6807&gt;<br \/>\n\u8bf4\u660e\uff1a\u5c06\u6587\u4ef6\u4ece\u6e90\u590d\u5236\u5230\u76ee\u6807\u3002\u6b64\u547d\u4ee4\u4e5f\u5141\u8bb8\u591a\u4e2a\u6e90\uff0c\u5728\u591a\u4e2a\u6e90\u7684\u60c5\u51b5\u4e0b\uff0c\u76ee\u6807\u5fc5\u987b\u662f\u76ee\u5f55\u3002\u5e38\u7528\u53c2\u6570\uff1a\u5982\u679c\u76ee\u6807\u5df2\u7ecf\u5b58\u5728\uff0c\u5219-f\u9009\u9879\u5c06\u8986\u76d6\u8be5\u76ee\u6807\u3002<br \/>\n-p\u9009\u9879\u5c06\u4fdd\u7559\u6587\u4ef6\u5c5e\u6027[topax]\uff08\u65f6\u95f4\u6233\uff0c\u6240\u6709\u6743\uff0c\u6743\u9650\uff0cACL\uff0cXAttr\uff09\u3002\u5982\u679c-p\u4e0d\u5e26arg\uff0c\u5219\u4fdd\u7559\u65f6\u95f4\u6233\uff0c\u6240\u6709\u6743\uff0c\u6743\u9650\u3002\u5982\u679c\u6307\u5b9a\u4e86-pa\uff0c\u5219\u8fd8\u5c06\u4fdd\u7559\u6743\u9650\uff0c\u56e0\u4e3aACL\u662f\u6743\u9650\u7684\u8d85\u96c6\u3002\u786e\u5b9a\u662f\u5426\u4fdd\u7559\u539f\u59cb\u540d\u79f0\u7a7a\u95f4\u6269\u5c55\u5c5e\u6027\u4e0e-p\u6807\u5fd7\u65e0\u5173\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -cp \/fsshell\/copyfile.txt \/fsshell\/dstfile.txt \/eastmoney\/<br \/>\n\u5c06\u6587\u4ef6\u7cfb\u7edf\u7684 \/fsshell\/copyfile.txt \u548c\/fsshell\/dstfile.txt copy \u5230 hdfs \u7684\/eastmoney\/\u8def\u5f84\u4e0b\u3002<\/li>\n<\/ul>\n<h4>createSnapshot<\/h4>\n<p>\u7528\u6cd5\uff1a\u53c2\u8003<a href=\"https:\/\/nj.transwarp.cn:8180\/?p=2579\" title=\"HDFS Snapshot \u4f7f\u7528\u6307\u5357\">HDFS Snapshot \u4f7f\u7528\u6307\u5357<\/a><\/p>\n<h4>deleteSnapshot<\/h4>\n<p>\u7528\u6cd5\uff1a\u53c2\u8003<a href=\"https:\/\/nj.transwarp.cn:8180\/?p=2579\" title=\"HDFS Snapshot \u4f7f\u7528\u6307\u5357\">HDFS Snapshot \u4f7f\u7528\u6307\u5357<\/a><\/p>\n<h4>df<\/h4>\n<p>\u7528\u6cd5\uff1a hadoop fs -df [-h] URI [URI &#8230;]<br \/>\n\u8bf4\u660e\uff1a\u663e\u793a\u6587\u4ef6\u7cfb\u7edf\u53ef\u7528\u7a7a\u95f4\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -df \/fsshell\/<br \/>\n\u663e\u793a\u6587\u4ef6\u7cfb\u7edf \/fsshell\/ \u7684\u53ef\u7528\u7a7a\u95f4<\/li>\n<\/ul>\n<h4>du<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -du [-s] [-h]  URI [URI &#8230;]<br \/>\n\u8bf4\u660e\uff1a\u663e\u793a\u7ed9\u5b9a\u76ee\u5f55\u4e2d\u5305\u542b\u7684\u6587\u4ef6\u548c\u76ee\u5f55\u7684\u5927\u5c0f\uff0c\u6216\u4ec5\u5728\u6587\u4ef6\u7684\u60c5\u51b5\u4e0b\u663e\u793a\u6587\u4ef6\u7684\u5927\u5c0f\u3002<br \/>\n\u5e38\u7528\u53c2\u6570\uff1a<br \/>\n-s\u9009\u9879\u5c06\u5bfc\u81f4\u663e\u793a\u6587\u4ef6\u5927\u5c0f\u7684\u6c47\u603b\u7ed3\u679c\uff0c\u800c\u4e0d\u662f\u5355\u4e2a\u6587\u4ef6\u7684\u7ed3\u679c\u3002\u5982\u679c\u6ca1\u6709-s\u9009\u9879\uff0c\u5219\u901a\u8fc7\u4ece\u7ed9\u5b9a\u8def\u5f84\u6df1\u51651\u7ea7\u6765\u5b8c\u6210\u8ba1\u7b97\u3002<br \/>\n-h\u9009\u9879\u5c06\u4ee5\u4eba\u6027\u5316\u7684\u65b9\u5f0f\u663e\u793a\u6587\u4ef6\u5927\u5c0f\uff08\u4f8b\u598264.0m\u800c\u4e0d\u662f67108864\uff09<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -du -h -s \/fsshell\/<br \/>\n\u6c47\u603b\u5c55\u793a \/fsshell\/ \u6587\u4ef6\u7cfb\u7edf\u4e0b\u6587\u4ef6\u4ee5\u53ca\u76ee\u5f55\u7684\u5927\u5c0f\u7ed3\u679c\u3002<\/li>\n<\/ul>\n<h4>expunge<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -expunge<br \/>\n\u8bf4\u660e\uff1a\u6c38\u4e45\u5220\u9664\u5783\u573e\u7bb1\u76ee\u5f55\u4e2d\u65e9\u4e8e\u4fdd\u7559\u9608\u503c\u7684\u68c0\u67e5\u70b9\u4e2d\u7684\u6587\u4ef6\uff0c\u5e76\u521b\u5efa\u65b0\u7684\u68c0\u67e5\u70b9\u3002\u7528\u6237\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6efs.trash.checkpoint.interval\uff08\u5728core-site.xml\u4e2d\uff09\u7684\u53c2\u6570\u6765\u5b9a\u671f\u521b\u5efa\u548c\u5220\u9664\u68c0\u67e5\u70b9\u3002\u8be5\u503c\u5e94\u5c0f\u4e8e\u6216\u7b49\u4e8efs.trash.interval\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -expunge<br \/>\n\u624b\u52a8\u89e6\u53d1\u4e00\u6b21\u6c38\u4e45\u5220\u9664\u5783\u573e\u7bb1\u76ee\u5f55\u4e2d\u65e9\u4e8e\u4fdd\u7559\u9608\u503c\u7684\u68c0\u67e5\u70b9\u4e2d\u7684\u6587\u4ef6\uff0c\u5e76\u521b\u5efa\u65b0\u7684\u68c0\u67e5\u70b9\u7684\u884c\u4e3a\u3002<\/li>\n<\/ul>\n<h4>find<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -find <path> &#8230; <expression> &#8230;<br \/>\n\u8bf4\u660e\uff1a\u67e5\u627e\u4e0e\u6307\u5b9a\u8868\u8fbe\u5f0f\u5339\u914d\u7684\u6240\u6709\u6587\u4ef6\uff0c\u5e76\u5bf9\u5b83\u4eec\u5e94\u7528\u9009\u5b9a\u7684\u64cd\u4f5c\u3002\u5982\u679c\u672a\u6307\u5b9a\u8def\u5f84\uff0c\u5219\u9ed8\u8ba4\u4e3a\u5f53\u524d\u5de5\u4f5c\u76ee\u5f55\u3002\u5982\u679c\u672a\u6307\u5b9a\u8868\u8fbe\u5f0f\uff0c\u5219\u9ed8\u8ba4\u4e3a-print\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -find \/fsshell\/ -name copyfile.txt<br \/>\n\u67e5\u627e\u6587\u4ef6\u7cfb\u7edf fsshell \u4e0b\u7684\u540d\u4e3a copyfile \u7684\u6587\u4ef6\u3002<\/li>\n<\/ul>\n<h4>get<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -get [-ignorecrc] [-crc] [-p] [-f] <src> <localdst><br \/>\n\u8bf4\u660e\uff1a\u5c06\u6587\u4ef6\u590d\u5236\u5230\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\u3002\u672a\u901a\u8fc7CRC\u68c0\u67e5\u7684\u6587\u4ef6\u53ef\u4ee5\u4f7f\u7528-ignorecrc\u9009\u9879\u8fdb\u884c\u590d\u5236\u3002\u53ef\u4ee5\u4f7f\u7528-crc\u9009\u9879\u590d\u5236\u6587\u4ef6\u548cCRC\u3002<br \/>\n\u5e38\u7528\u53c2\u6570\uff1a<br \/>\n-p\uff1a\u4fdd\u7559\u8bbf\u95ee\u548c\u4fee\u6539\u65f6\u95f4\uff0c\u6240\u6709\u6743\u548c\u6743\u9650\u3002\uff08\u5047\u8bbe\u6743\u9650\u53ef\u4ee5\u5728\u6587\u4ef6\u7cfb\u7edf\u4e4b\u95f4\u4f20\u64ad\uff09<br \/>\n-f\uff1a\u5982\u679c\u76ee\u7684\u5730\u5df2\u7ecf\u5b58\u5728\uff0c\u5219\u5c06\u5176\u8986\u76d6\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -get -f \/fsshell\/copyfile.txt<br \/>\n\u5c06\u6587\u4ef6\u7cfb\u7edf\u7684copyfile.txt \u6587\u4ef6copy\u5230\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\uff0c\u5982\u679c\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\u5df2\u5b58\u5728\u5219\u8986\u76d6\u3002<\/li>\n<\/ul>\n<h4>getfacl<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -getfacl [-R] &lt;\u8def\u5f84&gt;<br \/>\n\u8bf4\u660e\uff1a\u663e\u793a\u6587\u4ef6\u548c\u76ee\u5f55\u7684\u8bbf\u95ee\u63a7\u5236\u5217\u8868\uff08ACL\uff09\u3002\u5982\u679c\u76ee\u5f55\u5177\u6709\u9ed8\u8ba4ACL\uff0c\u5219getfacl\u8fd8\u5c06\u663e\u793a\u9ed8\u8ba4ACL\u3002-R\uff1a\u9012\u5f52\u5217\u51fa\u6240\u6709\u6587\u4ef6\u548c\u76ee\u5f55\u7684ACL\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -getfacl -R \/fsshell\/<br \/>\n\u9012\u5f52\u663e\u793a\u6587\u4ef6\u7cfb\u7edf \/fsshell\/ \u4e0b\u7684\u6240\u6709\u6587\u4ef6\u6216\u8005\u76ee\u5f55\u7684\u8bbf\u95ee\u6743\u9650<\/li>\n<\/ul>\n<h4>getfattr<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -getfattr [-R] -n\u540d\u79f0| -d [-e en] &lt;\u8def\u5f84&gt;<br \/>\n\u8bf4\u660e\uff1a\u663e\u793a\u6587\u4ef6\u6216\u76ee\u5f55\u7684\u6269\u5c55\u5c5e\u6027\u540d\u79f0\u548c\u503c\uff08\u5982\u679c\u6709\uff09\u3002<br \/>\n\u5e38\u7528\u53c2\u6570\uff1a<br \/>\n-R\uff1a\u9012\u5f52\u5217\u51fa\u6240\u6709\u6587\u4ef6\u548c\u76ee\u5f55\u7684\u5c5e\u6027\u3002<br \/>\n-n name\uff1a\u8f6c\u50a8\u547d\u540d\u6269\u5c55\u5c5e\u6027\u503c\u3002<br \/>\n-d\uff1a\u8f6c\u50a8\u4e0e\u8def\u5f84\u540d\u5173\u8054\u7684\u6240\u6709\u6269\u5c55\u5c5e\u6027\u503c\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -getfattr -R -d \/fsshell\/<br \/>\n\u663e\u793a \/fsshell\/ \u8def\u5f84\u4e0b\u6240\u6709\u7684\u6587\u4ef6\u548c\u76ee\u5f55\u7684\u6269\u5c55\u5c5e\u6027\u3002<\/li>\n<\/ul>\n<h4>getmerge<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -getmerge [-nl] <src> <localdst><br \/>\n\u8bf4\u660e\uff1a\u5c06\u6e90\u76ee\u5f55\u548c\u76ee\u6807\u6587\u4ef6\u4f5c\u4e3a\u8f93\u5165\uff0c\u5e76\u5c06src\u4e2d\u7684\u6587\u4ef6\u4e32\u8054\u5230\u76ee\u6807\u672c\u5730\u6587\u4ef6\u4e2d\u3002\u53ef\u4ee5\u9009\u62e9\u5c06-nl\u8bbe\u7f6e\u4e3a\u5141\u8bb8\u5728\u6bcf\u4e2a\u6587\u4ef6\u7684\u672b\u5c3e\u6dfb\u52a0\u6362\u884c\u7b26\uff08LF\uff09\u3002-skip-empty-file\u53ef\u4ee5\u7528\u4e8e\u5728\u6587\u4ef6\u4e3a\u7a7a\u7684\u60c5\u51b5\u4e0b\u907f\u514d\u4e0d\u9700\u8981\u7684\u6362\u884c\u7b26\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -getmerge -nl \/fsshell\/copyfile.txt \/fsshell\/dstfile.txt \/tmp\/merge.txt<br \/>\n\u5c06\u6587\u4ef6\u7cfb\u7edf copyfile.txt dstfile.txt \u7684\u5185\u5bb9merge \u5230\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\u7684\/tmp\/merge.txt\u4e2d\uff0c\u4e24\u4e2a\u6587\u4ef6\u5185\u5bb9\u672b\u5c3e\u6dfb\u52a0\u6362\u884c\u7b26\u3002<\/li>\n<\/ul>\n<h4>head<\/h4>\n<p><strong>TDH \u96c6\u7fa4\u6682\u65f6\u4e0d\u652f\u6301\u8be5\u547d\u4ee4<\/strong><br \/>\n\u7528\u6cd5\uff1ahadoop fs -head URI<br \/>\n\u8bf4\u660e\uff1a\u663e\u793a\u6587\u4ef6\u7684\u524d1000\u5b57\u8282\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -head \/fsshell\/copyfile.txt<br \/>\n\u663e\u793a\u6587\u4ef6\u7cfb\u7edf \/fsshell\/copyfile.txt \u7684\u524d1000\u5b57\u8282\u3002<\/li>\n<\/ul>\n<h4>help<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -help<br \/>\n\u8bf4\u660e\uff1a\u8f93\u51fahadoop fs \u7684\u5177\u4f53\u7528\u6cd5<\/p>\n<h4>ls<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -ls [-C] [-d] [-h] [-q] [-R] [-t] [-S] [-r] [-u] [-e] <args><br \/>\n\u8bf4\u660e\uff1a\u5217\u51fa\u76ee\u5f55\u7684\u5185\u5bb9\uff0c\u6216\u8005\u6587\u4ef6\u7684\u63cf\u8ff0\u4fe1\u606f<br \/>\n\u5e38\u7528\u53c2\u6570\uff1a<br \/>\n-C\uff1a\u4ec5\u663e\u793a\u6587\u4ef6\u548c\u76ee\u5f55\u7684\u8def\u5f84\u3002<br \/>\n-d\uff1a\u76ee\u5f55\u88ab\u5217\u4e3a\u7eaf\u6587\u4ef6\u3002<br \/>\n-h\uff1a\u4ee5\u4eba\u7c7b\u53ef\u8bfb\u7684\u683c\u5f0f\u8bbe\u7f6e\u6587\u4ef6\u5927\u5c0f\uff08\u4f8b\u598264.0m\u800c\u4e0d\u662f67108864\uff09\u3002<br \/>\n-q\uff1a\u6253\u5370\uff1f\u800c\u4e0d\u662f\u4e0d\u53ef\u6253\u5370\u7684\u5b57\u7b26\u3002<br \/>\n-R\uff1a\u9012\u5f52\u5217\u51fa\u9047\u5230\u7684\u5b50\u76ee\u5f55\u3002<br \/>\n-t\uff1a\u6309\u4fee\u6539\u65f6\u95f4\u5bf9\u8f93\u51fa\u8fdb\u884c\u6392\u5e8f\uff08\u6700\u65b0\u7684\u4f18\u5148\uff09\u3002<br \/>\n-S\uff1a\u6309\u6587\u4ef6\u5927\u5c0f\u6392\u5e8f\u8f93\u51fa\u3002<br \/>\n-r\uff1a\u53cd\u8f6c\u6392\u5e8f\u987a\u5e8f\u3002<br \/>\n-u\uff1a\u4f7f\u7528\u8bbf\u95ee\u65f6\u95f4\u800c\u4e0d\u662f\u4fee\u6539\u65f6\u95f4\u6765\u8fdb\u884c\u663e\u793a\u548c\u6392\u5e8f\u3002<br \/>\n-e\uff1a\u4ec5\u663e\u793a\u6587\u4ef6\u548c\u76ee\u5f55\u7684\u64e6\u9664\u7f16\u7801\u7b56\u7565\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -ls \/fsshell\/<br \/>\n\u5217\u51fa\u6587\u4ef6\u7cfb\u7edf\/fsshell\/\u4e0b\u7684\u76ee\u5f55\u7684\u5185\u5bb9\u3002<\/li>\n<\/ul>\n<h4>lsr<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -lsr <args><br \/>\n\u8bf4\u660e\uff1als\u7684\u9012\u5f52\u7248\u672c\u3002\u4e0d\u63a8\u8350\u4f7f\u7528\u6b64\u547d\u4ee4\u3002\u800c\u662f\u4f7f\u7528hadoop fs -ls -R<\/p>\n<h4>mkdir<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -mkdir [-p] &lt;\u8def\u5f84&gt;<br \/>\n\u8bf4\u660e\uff1a\u5c06\u8def\u5f84uri\u7528\u4f5c\u53c2\u6570\u5e76\u521b\u5efa\u76ee\u5f55\u3002-p\u9009\u9879\u7684\u884c\u4e3a\u4e0eUnix mkdir -p\u975e\u5e38\u76f8\u4f3c\uff0c\u5b83\u4f1a\u6309\u7167\u8def\u5f84\u521b\u5efa\u7236\u76ee\u5f55\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -mkdir -p \/fsshell\/childdir\/<br \/>\n\u6309\u7167\u8def\u5f84\u5728\u6587\u4ef6\u7cfb\u7edf\u4e0a\u521b\u5efa\/fsshell\/childdir\/\u76ee\u5f55\uff0c\u5982\u679c\u7236\u76ee\u5f55\u4e0d\u5b58\u5728\u5219\u521b\u5efa\u7236\u76ee\u5f55\u3002<\/li>\n<\/ul>\n<h4>moveFromLocal<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -moveFromLocal localsrc dst<br \/>\n\u8bf4\u660e\uff1a\u4e0eput\u547d\u4ee4\u7c7b\u4f3c\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\u590d\u5236\u540e\u5c06\u6e90localsrc\u5220\u9664\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -moveFromLocal \/fsshell\/dstfile.txt<br \/>\n\u5c06\u6587\u4ef6\u7cfb\u7edf dstfile.txt move \u5230hadoop\u6587\u4ef6\u7cfb\u7edf\uff0c\u5e76\u5220\u9664\u672c\u5730\u6e90\u6587\u4ef6\u3002<\/li>\n<\/ul>\n<h4>moveToLocal<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -moveToLocal [-crc] src dst<br \/>\n\u8bf4\u660e\uff1a\u5c1a\u672a\u5b9e\u73b0\u7684\u529f\u80fd<\/p>\n<h4>mv<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -mv URI [URI &#8230;] dest<br \/>\n\u8bf4\u660e\uff1a\u5c06\u6587\u4ef6\u4ece\u6e90\u79fb\u52a8\u5230\u76ee\u6807\u3002\u6b64\u547d\u4ee4\u4e5f\u5141\u8bb8\u591a\u4e2a\u6e90\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u76ee\u6807\u4f4d\u7f6e\u5fc5\u987b\u662f\u76ee\u5f55\u3002\u4e0d\u5141\u8bb8\u8de8\u6587\u4ef6\u7cfb\u7edf\u79fb\u52a8\u6587\u4ef6\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -mv \/fsshell\/copyfile.txt \/eastmoney\/copyfile2.txt<br \/>\n\u5c06\u6587\u4ef6\u7cfb\u7edf copyfile.txt move \u5230\/eastmoney\/\u4e0b\uff0c\u5e76\u547d\u540d\u4e3acopyfile2.txt\u3002<\/li>\n<\/ul>\n<h4>put<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -put localsrc dst<br \/>\n\u8bf4\u660e\uff1a\u5c06\u4e00\u4e2a\u6216\u591a\u4e2a\u672c\u5730\u6587\u4ef6 copy \u5230\u76ee\u6807\u3002\u6b64\u547d\u4ee4\u4e5f\u5141\u8bb8\u591a\u4e2a\u6e90\uff0c\u5728\u591a\u4e2a\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\u7684\u60c5\u51b5\u4e0b\uff0c\u76ee\u6807\u4f4d\u7f6e\u5fc5\u987b\u662f\u76ee\u5f55\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -put localfile \/hadoop\/hadoopfile<br \/>\n\u5c06\u6587\u4ef6\u7cfb\u7edf localfile copy \u5230 \/eastmoney\/ \u4e0b\uff0c\u5e76\u547d\u540d\u4e3ahadoopfile\u3002<\/li>\n<li>\u6848\u4f8b2\uff1ahadoop fs -put localfile1 localfile2 \/user\/hadoop\/hadoopdir<\/li>\n<li>\u6848\u4f8b3\uff1ahadoop fs -put &#8211; \/hadoop\/hadoopfile\uff0c\u4ece\u6807\u51c6\u8f93\u5165\u8bfb\u53d6\u5e76\u5199\u5165\u76ee\u6807\u6587\u4ef6<\/li>\n<\/ul>\n<h4>renameSnapshot<\/h4>\n<p>\u7528\u6cd5\uff1a\u53c2\u8003<a href=\"https:\/\/nj.transwarp.cn:8180\/?p=2579\" title=\"HDFS Snapshot \u4f7f\u7528\u6307\u5357\">HDFS Snapshot \u4f7f\u7528\u6307\u5357<\/a><\/p>\n<h4>rm<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -rm [-f] [-r |-R] [-skipTrash] URI [URI &#8230;]<br \/>\n\u8bf4\u660e\uff1a\u6839\u636e\u53c2\u6570\u5220\u9664\u6587\u4ef6\u6216\u8005\u76ee\u5f55<br \/>\n\u5e38\u7528\u53c2\u6570\uff1a<br \/>\n-f\uff1a\u5982\u679c\u6587\u4ef6\u4e0d\u5b58\u5728\uff0c\u4e0d\u663e\u793a\u9519\u8bef\u4fe1\u606f\uff1b<br \/>\n-r\/R\uff1a\u9012\u5f52\u7684\u65b9\u5f0f\u5220\u9664\u6587\u4ef6\u4ee5\u53ca\u76ee\u5f55\uff1b<br \/>\n-skipTrash\uff1a\u7ed5\u8fc7\u56de\u6536\u7ad9\u76f4\u63a5\u5220\u9664\uff0c\u8c28\u614e\u4f7f\u7528\uff1b<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -rm \/eastmoney\/hadoopfile<\/li>\n<\/ul>\n<h4>rmdir<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -rmdir [&#8211;ignore-fail-on-non-empty] URI [URI &#8230;]<br \/>\n\u8bf4\u660e\uff1a\u6839\u636e\u53c2\u6570\u5220\u9664\u76ee\u5f55<br \/>\n\u5e38\u7528\u53c2\u6570\uff1a<br \/>\n&#8211;ignore-fail-on-non-empty\uff1a\u901a\u914d\u7b26\u65f6\uff0c\u975e\u7a7a\u76ee\u5f55\u5ffd\u7565\u5931\u8d25\uff1b<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -rmdir \/eastmoney\/dir1<\/li>\n<\/ul>\n<h4>rmr<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -rmr \u7b49\u540c\u4e8e \u7528\u6cd5\uff1ahadoop fs -rm -r \u7684\u4f7f\u7528\uff0c\u6b64\u5904\u4e0d\u518d\u8d58\u8ff0\uff1b<\/p>\n<h4>setfacl<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -setfacl [-R] [-b | -k -m | -x <acl_spec> <path>] | [-set <acl_spec> <path>]]<br \/>\n\u8bf4\u660e\uff1a\u8bbe\u7f6e\u6587\u4ef6\u548c\u76ee\u5f55\u7684\u8bbf\u95ee\u63a7\u5236\u5217\u8868\uff08ACL\uff09\u3002TDH \u5728\u5f00\u542f\u5b89\u5168\u7684\u60c5\u51b5\u4e0b\uff0c\u4e0d\u63a8\u8350\u4f7f\u7528\u8fd9\u79cd\u65b9\u6cd5\u8d4b\u6743\uff1b\u4ec5\u4f5c\u4e3a\u4e86\u89e3<\/p>\n<h4>setfattr<\/h4>\n<p>TDH \u5728\u5f00\u542f\u5b89\u5168\u7684\u60c5\u51b5\u4e0b\uff0c\u4e0d\u63a8\u8350\u4f7f\u7528\u8fd9\u79cd\u65b9\u6cd5\u7ba1\u7406\u6269\u5c55\u5c5e\u6027\uff1b<\/p>\n<h4>setrep<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -setrep [-w] [-R] num \u8def\u5f84\u540d\/\u6587\u4ef6\u540d<br \/>\n\u8bf4\u660e\uff1a\u5c06\u8def\u5f84uri\u7528\u4f5c\u53c2\u6570\uff0c\u4fee\u6539\u8be5\u8def\u5f84\u4e0b\u7684\u6587\u4ef6\u526f\u672c\u6570\u4e3anum\u3002-w\u9009\u9879\u662f\u7b49\u5f85\u4fee\u6539\u5b8c\u6210\u8fd4\u56de\u7ed3\u679c\uff1b-R \u662f\u5411\u524d\u517c\u5bb9\uff0c\u53ef\u52a0\u53ef\u4e0d\u52a0\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -setrep 2 \/fsshell\/copyfile.txt<br \/>\n\u5c06\/fsshell\/copyfile.txt\u6587\u4ef6\u7684\u526f\u672c\u6570\u6539\u62102\u526f\u672c\u3002<\/li>\n<\/ul>\n<h4>stat<\/h4>\n<p>\u8fd4\u56de\u8def\u5f84\u4e0a\u7684\u7edf\u8ba1\u4fe1\u606f\u3002<br \/>\n\u5176\u4e2d\u53ef\u9009\u7684format\u88ab\u5b98\u65b9\u6587\u6863\u9057\u6f0f\u4e86\u3002\u4e0b\u9762\u5217\u51fa\u4e86format\u7684\u5f62\u5f0f\uff1a<br \/>\n%b\uff1a\u6253\u5370\u6587\u4ef6\u5927\u5c0f\uff08\u76ee\u5f55\u4e3a0\uff09<br \/>\n%n\uff1a\u6253\u5370\u6587\u4ef6\u540d<br \/>\n%o\uff1a\u6253\u5370block size \uff08\u6211\u4eec\u8981\u7684\u503c\uff09<br \/>\n%r\uff1a\u6253\u5370\u5907\u4efd\u6570<br \/>\n%y\uff1a\u6253\u5370UTC\u65e5\u671f yyyy-MM-dd HH:mm:ss<br \/>\n%Y\uff1a\u6253\u5370\u81ea1970\u5e741\u67081\u65e5\u4ee5\u6765\u7684UTC\u5fae\u79d2\u6570<br \/>\n%F\uff1a\u76ee\u5f55\u6253\u5370directory, \u6587\u4ef6\u6253\u5370regular file<br \/>\n\u5f53\u4f7f\u7528-stat\u9009\u9879\u4f46\u4e0d\u6307\u5b9aformat\u65f6\u5019\uff0c\u53ea\u6253\u5370\u6587\u4ef6\u521b\u5efa\u65e5\u671f\uff0c\u76f8\u5f53\u4e8e%y\uff1a<\/p>\n<h4>tail<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -tail [-f] URI<br \/>\n\u8bf4\u660e\uff1a\u663e\u793a\u6587\u4ef6\u7684\u6700\u540e\u51e0\u884c\u6570\u636e\u3002-f \u9009\u9879\u662f\u8ddf\u968f\u6587\u4ef6\u589e\u957f\u663e\u793a\u9644\u52a0\u7684\u5185\u5bb9\u3002\u548c linux \u4f7f\u7528\u65b9\u6cd5\u4e00\u81f4<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -tail -f \/fsshell\/copyfile.txt<br \/>\n\u5b9e\u65f6\u67e5\u770b copyfile.txt \u6587\u4ef6\u7684\u6570\u636e\u53d8\u5316\u3002<\/li>\n<\/ul>\n<h4>test<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -test [defsz] URI<br \/>\n\u8bf4\u660e\uff1a\u6839\u636e\u53c2\u6570\u6d4b\u8bd5\u8def\u5f84\/\u6587\u4ef6\u5c5e\u6027\u3002-d \u9009\u9879\u662f\u6d4b\u8bd5\u8def\u5f84\u662f\u5426\u76ee\u5f55\uff1b-e \u8def\u5f84\u662f\u5426\u5b58\u5728\uff1b-f \u8def\u5f84\u662f\u5426\u6587\u4ef6\uff1b-s \u8def\u5f84\u662f\u5426\u4e3a\u7a7a\uff1b-z \u6587\u4ef6\u957f\u5ea6\u662f\u5426\u4e3a\u7a7a\uff1b<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -test -f \/fsshell\/copyfile<br \/>\n\u67e5\u770b \/fsshell\/copyfile \u662f\u5426\u4e3a\u6587\u4ef6\uff0c\u8fd4\u56de 0 \u4e3a\u6587\u4ef6\uff1b<\/li>\n<\/ul>\n<h4>text<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -text src<br \/>\n\u8bf4\u660e\uff1a\u4ee5 text \u683c\u5f0f\u83b7\u53d6\u6e90\u6587\u4ef6\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1ahadoop fs -text \/fsshell\/copyfile<\/li>\n<\/ul>\n<h4>touch<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -touch URI [URI &#8230;]<br \/>\n\u521b\u5efa\u4e00\u4e2a\u7a7a\u6587\u4ef6\u3002<\/p>\n<ul>\n<li>\u6848\u4f8b1\uff1a<strong><code>hadoop fs -touch \/fsshell\/emptyfile<\/code><\/strong><\/li>\n<\/ul>\n<h4>touchz<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -touchz \u7b49\u540c\u4e8e \u7528\u6cd5\uff1ahadoop fs -touch \u7684\u4f7f\u7528\uff0c\u6b64\u5904\u4e0d\u518d\u8d58\u8ff0\uff1b<\/p>\n<h4>truncate<\/h4>\n<p>\u7528\u6cd5\uff1ahadoop fs -truncate [-w] &lt;\u957f\u5ea6&gt; &lt;\u8def\u5f84&gt;<br \/>\n\u8bf4\u660e\uff1a\u5c06\u6307\u5b9a\u6587\u4ef6\u6a21\u5f0f\u5339\u914d\u7684\u6240\u6709\u6587\u4ef6\u622a\u65ad\u4e3a\u6307\u5b9a\u957f\u5ea6\u3002-w \u53c2\u6570\u5728\u6267\u884c\u9636\u6bb5\u6587\u4ef6\u4e0d\u53ef\u5199\u72b6\u6001\uff1b<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981\u8bf4\u660e \u6587\u4ef6\u7cfb\u7edf\uff08FS\uff09shell\uff08\u4ee5\u4e0b\u7b80\u79f0\u4e3a FS Shell\uff09\u5305\u542b\u5404\u79cd\u7c7b\u4f3c\u4e8e shell \u7684\u547d\u4ee4\uff0cFS  ..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/kbwp.transwarp.cn\/?p=2563\" title=\"read more...\">Read more<\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[99,185],"class_list":["post-2563","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-hdfs","tag-185"],"acf":[],"_links":{"self":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/2563","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2563"}],"version-history":[{"count":0,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/2563\/revisions"}],"wp:attachment":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2563"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2563"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2563"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}