![\"hdfs](\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2020\/02\/hadoop-hdfs-commands.jpg\")
<\/a><\/h3>\n1. moveFromLocal<\/h3>\n
HDFS moveFromLocal Command Usage:<\/b><\/p>\n HDFS moveFromLocal Command Example:<\/b><\/p>\n Here we are trying to move the file \u2018test1\u2019 from the local filesystem to the Hadoop filesystem.<\/p>\n The file from the local gets deleted.<\/span><\/p>\n HDFS moveFromLocal Command Description:<\/b><\/p>\n The Hadoop fs shell command moveFromLocal<\/strong> moves the file or directory from the local filesystem to the destination in Hadoop HDFS.<\/p>\n HDFS moveToLocal Command Usage:<\/b><\/p>\n HDFS moveToLocal Command Example:<\/b><\/p>\n This command is not yet implemented.<\/span><\/p>\n HDFS moveToLocal Command Description:<\/b><\/p>\n The Hadoop fs shell command moveToLocal<\/strong> moves the file or directory from the Hadoop filesystem to the destination in the local filesystem.<\/p>\n HDFS tail Command Usage:<\/b><\/p>\n HDFS tail Command Example:<\/b><\/p>\n Here using the tail<\/strong> command, we are trying to display the 1KB of file \u2018test\u2019 present in the dataflair directory on the HDFS filesystem.<\/p>\n HDFS tail Commnad Description:<\/b><\/p>\n The Hadoop fs shell tail<\/strong> command shows the last 1KB of a file on console or stdout.<\/p>\n The -f<\/strong> shows the append data as the file grows.<\/p>\n If you missed\u00a0Top 10 Hadoop Hdfs Commands<\/a><\/strong>\u00a0in Part-II then practice them as well.<\/p>\n HDFS rm Command Usage:<\/b><\/p>\n HDFS rm Command Example:<\/b><\/p>\n The below example deletes the file \u2018new\u2019 using rm<\/strong> command.<\/p>\n Here in the below example we are recursively deleting the DataFlair directory using -r with rm command.<\/p>\n HDFS rm Command Description:<\/b><\/p>\n The<\/span> rm<\/b> command removes the file present in the specified path.<\/span><\/p>\n HDFS rm Command Example:<\/b><\/p>\n Here in the below example we are recursively deleting the DataFlair directory using -r with rm command.<\/p>\n HDFS rm Command Description:<\/b> HDFS expunge Command Usage:<\/b> HDFS expunge Command Example:<\/b> HDFS expunge Command Description:<\/b> Learn few more frequently used\u00a0Hadoop Commands with Examples and Usage<\/a>\u00a0<\/strong>in\u00a0Part-III.<\/p>\n HDFS chown Command Usage:<\/b><\/p>\n HDFS chown Command Example:<\/b> HDFS chown Command Description:<\/b><\/p>\n The Hadoop fs shell command chown<\/strong> changes the owner of the file.<\/p>\n The -R<\/strong> option recursively changes files permissions through the directory structure. The user must be the owner of the file or superuser.<\/p>\n To learn more about the world’s most reliable storage layer follow this HDFS introductory guide<\/a><\/strong>.<\/p>\n HDFS chgrp Command Usage:<\/b><\/p>\n HDFS chgrp Command Example:<\/b><\/p>\n In the below example, we are changing the group of \u2018sample.zip\u2019 file of the HDFS file system.<\/p>\n Use -R<\/strong> option to change recursively through the directory structure.<\/p>\n Here we are trying to change the group of all files present in the DataFlair directory on the HDFS filesystem.<\/p>\n HDFS chgrp Description:<\/b><\/p>\n The Hadoop fs shell command chgrp<\/strong> changes the group of the file specified in the path.<\/p>\n The user must be the owner of the file or superuser.<\/p>\n HDFS setrep Command Usage:<\/b><\/p>\n HDFS setrep Command Example:<\/b><\/p>\n Here we are trying to change the replication factor of the \u2018sample\u2019 file present in newDataFlair directory on the HDFS filesystem.<\/p>\n Here we are trying to change the replication factor of all files residing in the newDataFlair directory.<\/p>\n HDFS setrep Command Description:<\/b><\/p>\n setrep<\/strong> command changes the replication factor to a specific count instead of the default replication factor for the file specified in the path. If used for a directory, then it will recursively change the replication factor for all the files residing in the directory.<\/p>\n HDFS du Command Usage:<\/b><\/p>\n HDFS du Command Example:<\/b><\/p>\n Here we are checking the size of file \u2018file1\u2019 in newDataFlair directory of HDFS.<\/p>\n HDFS du Description:<\/b><\/p>\n This Hadoop fs shell command du<\/a> prints a summary of the amount of disk usage of all files\/directories in the path.<\/p>\n HDFS df Command Usage:<\/b><\/p>\n HDFS df Command Example:<\/b> HDFS df Command Description:<\/b><\/p>\n The Hadoop fs shell command df<\/strong> shows the capacity, size, and free space available on the HDFS file system.<\/p>\n The -h<\/strong> option formats the file size in the human-readable format.<\/p>\n HDFS\u00a0fsck<\/strong> Command Usage:<\/b><\/p>\n HDFS\u00a0fsck<\/strong> Command Example:<\/b><\/p>\n In this example, we are trying to check the health of the files in \u2018dataflair\u2019 directory present in HDFS using the fsck command.<\/p>\nhadoop fs -moveFromLocal <localsrc> <dest><\/pre>\n
<\/a><\/p>\n<\/a><\/p>\n2. moveToLocal<\/h3>\n
hadoop fs -moveToLocal <src> <localdest><\/pre>\n
3. tail<\/h3>\n
hadoop fs -tail [-f] <file><\/pre>\n
<\/a><\/p>\n<\/a><\/p>\n4. rm<\/h3>\n
hadoop fs \u2013rm <path><\/pre>\n
<\/a><\/p>\n<\/a><\/p>\n
\nRecursive version of delete.<\/p>\n5. expunge<\/h3>\n
\n<\/b><\/p>\nhadoop fs -expunge<\/pre>\n
\n<\/b><\/p>\n<\/a><\/p>\n
\nHDFS expunge command makes the trash empty.<\/p>\n6. chown<\/h3>\n
hadoop fs -chown [-R] [owner] [:[group]] <path><\/pre>\n
\nHere we are changing the owner of a file name sample using the chown<\/strong> command.<\/p>\n<\/a><\/p>\n<\/a><\/p>\n7. chgrp<\/h3>\n
hadoop fs -chgrp <group> <path><\/pre>\n
<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n8. setrep<\/h3>\n
hadoop fs -setrep <rep> <path><\/pre>\n
<\/a><\/p>\n<\/a><\/p>\n9. du<\/h3>\n
hadoop fs \u2013du \u2013s \/directory\/filename<\/pre>\n
<\/a><\/p>\n10. df<\/h3>\n
hadoop fs -df [-h] <path><\/pre>\n
<\/a><\/p>\n11. fsck<\/h3>\n
hadoop fsck <path> [ -move | -delete | -openforwrite] [-files [-blocks [-locations | -racks]]]<\/pre>\n