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HDFS Shell 常用命令
命令格式
hadoop fs -cmd [-opt] arg1 arg2 …
关于path:
hdfs: hdfs://namenodehost + absolutePath 简写 absolutePath
本地:file:// + absolutePath 简写 absolutePath 或者相对路径 relatePath
常用命令
hadoop fs -mkdir -p /user/master
hadoop fs -touchz /user/master/test.txt
hadoop fs -put localfile1 localfile2 /user/master
hadoop fs -get /user/master/test1 /user/master/test2 .
hadoop fs -copyFromLocal [-f] localfile1 /user/master/file1
hadoop fs -appendToFile localfile1 localfile2 /user/master/test
hadoop fs -ls [-R] [-h] [-S] [-r] /user
hadoop fs -cat /user/master/test.txt
hadoop fs -text /user/master/test
hadoop fs -tail /user/master/log
hadoop fs -tail -f /user/master/log
hadoop fs -rm [-R] /user/master/test.txt
hadoop fs -test -e PATH
hadoop fs -test -d PATH
hadoop fs -test -f PATH
hadoop fs -test -s PATH
hadoop fs -test -z PATH
hadoop fs -count [-h]
hadoop fs -df [-h] /user/master
hadoop fs -du [-s] [-h] /user
hadoop fs -chgrp [-R] /user/master
hadoop fs -chmod [-R] 777 /user/master
hadoop fs -chown [-R] own[:grp] /user/master
hadoop fs -help ls