You might want to check the size of an output file to ensure it does not pass some limit, or check whether a file contains a certain message, or check system status using a command such as vmstat.

您可能希望检查输出文件的大小以确保没有超出限制，或者检查某个文件是否包含了特定的消息，或者使用 vmstat 这样的命令检查系统状态。

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Currentmessage: message associated with the current status of the virtual system.

currentmessage：和虚拟系统的当前状态相关的消息。

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Terminal based on TETRA digital trunking mobile communication system could send and receive status and short data service message, and achieve navigation and location through short data service.

基于TETRA数字集群移动通信系统开发的TETRA终端，通过数据业务可以发送和接收状态消息和短数据业务消息，利用短数据业务完成终端导航定位功能。

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