scp -r /opt/module/jdk1.8.0_202/ atguigu@hadoop103:/opt/module/103把102hadoop拉过来
scp -r atguigu@hadoop102:/opt/module/hadoop-3.3.1 ./在103把102的文件拷贝到104
scp -r atguigu@hadoop102:/opt/module/* atguigu@hadoop104:/opt/module/

scp -r /opt/module/jdk1.8.0_202/ atguigu@hadoop103:/opt/module/103把102hadoop拉过来
scp -r atguigu@hadoop102:/opt/module/hadoop-3.3.1 ./在103把102的文件拷贝到104
scp -r atguigu@hadoop102:/opt/module/* atguigu@hadoop104:/opt/module/