./bin/hdfs dfs -mkdir -p /user/hadoop
时间: 2023-04-26 19:02:53 浏览: 163
这是一个Hadoop命令,用于在HDFS上创建一个目录。具体命令为:./bin/hdfs dfs -mkdir -p /user/hadoop。
其中,-mkdir表示创建目录的命令,-p表示如果父目录不存在则创建父目录,/user/hadoop是要创建的目录路径。
相关问题
/usr/local/hadoop/bin/hdfs dfs -ls
该命令用于列出HDFS中指定路径下的所有文件和目录。具体用法如下:
```shell
/usr/local/hadoop/bin/hdfs dfs -ls <path>
```
其中,`<path>`为要列出的文件或目录的路径。如果不指定路径,则默认列出HDFS根目录下的所有文件和目录。例如,要列出HDFS根目录下的所有文件和目录,可以使用以下命令:
```shell
/usr/local/hadoop/bin/hdfs dfs -ls /
```
如果要列出/user/hadoop/input目录下的所有文件和目录,可以使用以下命令:
```shell
/usr/local/hadoop/bin/hdfs dfs -ls /user/hadoop/input
```
./bin/hdfs dfs -put ./etc/hadoop/*.xml input
As an AI language model, I don't have access to your local file system or Hadoop cluster. However, I can explain the meaning of the command you have provided.
The command "./bin/hdfs dfs -put ./etc/hadoop/*.xml input" is used to copy all the XML files located in the "./etc/hadoop/" directory to the "input" directory in HDFS (Hadoop Distributed File System).
Here is the breakdown of the command:
- "./bin/hdfs": This specifies the path to the Hadoop Distributed File System command-line interface binary file.
- "dfs": This is the subcommand used to interact with the HDFS.
- "-put": This is the command used to copy files from the local file system to HDFS.
- "./etc/hadoop/*.xml": This specifies the path to all the XML files located in the "./etc/hadoop/" directory. The "*" character is used to match any file name with the ".xml" extension.
- "input": This specifies the destination directory in HDFS where the files will be copied to.
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