好程序員大數據教程分享HadoopHDFS操做命令總結

  好程序員大數據教程分享HadoopHDFS操做命令總結程序員

 

  1.列出根目錄下全部的目錄或文件windows

 

  hadoopfs-ls/app

 

  2.列出/logs目錄下的全部目錄和文件oop

 

  hadoopfs-ls/logs大數據

 

  3.列出/user目錄及其子目錄下的全部文件(謹慎使用)教程

 

  hadoopfs-ls-R/userhadoop

 

  4.建立/soft目錄input

 

  hadoopfs-mkdir/soft文件上傳

 

  5.建立多級目錄集羣

 

  hadoopfs-mkdir-p/apps/windows/2017/01/01

 

  6.將本地的wordcount.jar文件上傳到/wordcount目錄下

 

  hadoopfs-putwordcount.jar/wordcount

 

  7.將/stu/students.txt文件拷貝到本地

 

  hadoopfs-copyToLocal/stu/students.txt

 

  8.將word.txt文件拷貝到/wordcount/input/目錄

 

  hadoopfs-copyFromLocalword.txt/wordcount/input

 

  9.將word.txt文件從本地移動到/wordcount/input/目錄下

 

  hadoopfs-moveFromLocalword.txt/wordcount/input/

 

  10.將/stu/students.txt拷貝一份爲/stu/students.txt.bak

 

  hadoopfs-cp/stu/students.txt/stu/students.txt.bak

 

  11.將/flume/tailout/目錄下的子目錄或文件都拷貝到/logs目錄(若是此目錄不存在會建立)下

 

  hadoopfs-cp/flume/tailout//logs

 

  12.將/word.txt文件重命名爲/words.txt

 

  hadoopfs-mv/word.txt/words.txt

 

  13.將/words.txt文件移動到/wordcount/input/目錄下

 

  hadoopfs-mv/words.txt/wordcount/input/

 

  14.將/ws目錄以及子目錄和文件都刪除(謹慎使用)

 

  hadoopfs-rm-r/ws

 

  15.將/wordcount/output2/目錄下的a.txt文件刪除

 

  hadoopfs-rm/wordcount/output2/a.txt

 

  16.將/wordcount/input/目錄下面的全部文件都刪除

 

  hadoopfs-rm/wordcount/input/*

 

  17.查看HDFS集羣的磁盤空間使用狀況

 

  hadoopfs-df-h

 

  18.查看/word.txt文件的內容

 

  hadoopfs-cat/word.txt

 

  19.將name.txt文件中的內容添加到/wordcount/input/words.txt文件中

 

  hadoopfs-appendToFilename.txt/wordcount/words.txt

 

  20.動態查看/wordcount/input/words.txt文件的內容

 

  hadoopfs-tail-f/wordcount/words.txt

 

  21.統計/flume目錄總大小

 

  hadoopfs-du-s-h/flume

 

  22.分別統計/flume目錄下各個子目錄(或文件)大小

 

  hadoopfs-du-s-h/flume/*

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