控制循环并保存每个事件的输出

Question

如何控制循环并从 USB 端口读取实时信息，并在插入或移除 USB 时保存每个输出。我知道下面的代码可以改进，请提供帮助。

#!/bin/bash
time=$(date)
HOST=$(hostname)

if [ -n "$(lsusb | grep SiGma)" ];
then
    echo "Signal connected at { $time }   Hosted by: $HOST"
    echo "__________________________________________________"
else    
    echo "Signal disconnected at { $time }   Hosted by: $HOST"
    echo "__________________________________________________"
fi

Answer 1

让你的脚本看起来像这样：

#!/bin/bash
time=$(date)
HOST=$(hostname)

if [ -n "$(lsusb | grep SiGma)" ];
then
    echo "SiGma connected at { $time }   Hosted by: $HOST" >> ~/sigma.log
else    
    echo "SiGma disconnected at { $time }   Hosted by: $HOST" >> ~/sigma.log
fi

关注后这个帖子或者这个帖子在插入或拔出 USB 设备后自动运行脚本。~/sigma.log当插入或拔出简短明文描述中包含“SiGma”字符串的 USB 设备时，您将在文件中看到结果。