The shell of HDFs

The call file system (FS) shell command should use the form $HADOOP _home/bin/hadoop FS.

All FS shell commands use the URI path as the parameter.

The URI format is Scheme://authority/path.

The scheme for Hdfs,hdfs is HDFs, such as Hdfs://localhost:9000/, for local, local scheme is file, such as file://

The scheme and authority parameters are optional, and if not specified, the default scheme specified in the configuration is used.

For example,/parent/child can be represented as hdfs://namenode:namenodeport/parent/child, or/parent/child (assuming the configuration file is Namenode:namenodeport)

The behavior of most FS shell commands is similar to the corresponding UNIX shell command.

The shell of HDFs