修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/Documentation/ABI/stable/sysfs-bus-usb
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@@ -50,8 +50,10 @@
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 		Tools can use this file and the connected_duration file to
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 		compute the percentage of time that a device has been active.
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-		For example,
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-		echo $((100 * `cat active_duration` / `cat connected_duration`))
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+		For example::
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+
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+		  echo $((100 * `cat active_duration` / `cat connected_duration`))
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+
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 		will give an integer percentage.  Note that this does not
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 		account for counter wrap.
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 Users: