当在表达式中使用. .时，它能指示表达式从层次结构中的当前节点上提一层(这亦类似于unix操作系统内目录的处理)。
When you use.. in an expression, it instructs the expression to work up one level from the current node in the hierarchy (again, similar to working with directories in UNIX operating systems).
在受影响节点上验证操作系统的配置。
Verify the configuration of the operating system on the affected node.
用户可以在GPFS集群中定义的Linux操作系统收集器节点上执行SNMP服务收集，并将信息发送到管理节点。
It allows users to perform SNMP service collection from a defined Linux OS collector node in the GPFS cluster to a management node.
若一个作业要求必须在某个特定操作系统上运行(通过作业nodes属性)，那么这个作业将只能在支持该操作系统的节点上运行。
A job that requires a certain operating system via the job nodes attribute will run only on nodes that have that operating system.
若一个作业要求必须在某个特定操作系统上运行(通过作业nodes属性)，那么这个作业将只能在支持该操作系统的节点上运行。
A job that requires a certain operating system via the job nodes attribute will run only on nodes that have that operating system.
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