Applications have a railway emergency call marshalling operations multi-driver communications train tail wind pressure transmission and print out orders the vehicle trips of transmission voice and data storage and communication patterns cut over GPS positioning location kinship and other functions .

应用方面具备了铁路紧急呼叫、调车作业、多驾驶员通信、列车 尾部风压、调度命令传送和 打印、车次号传输、语音及数据的存储及通信模式的切换、GPS定位的位置寻址等功能。

This tells tail to print the last ten lines of the specified file but instead of exiting it waits for more text to appear in the file and prints it as it appears .

该选项告诉 tail 打印指定文件的最后10行，但是它不仅 打印已有的内容，还会等待该文件中将要出现的更多内容，并对其进行打印。