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通过执行命令 `echo 1/0 > /sys/class/rk_modem/modem_status`，您将操作设备以实现模块的上电状态。此举精确地控制了系统中特定模块的电源状态转换，从而在需求时确保其激活并运行于最高效能模式下。
root@RK356X:/test_utils/4G# sh 4G_slm750_TQ3568.sh
cat: '/sys/bus/usb/devices/7-1:1.1/modalias': No such file or directory
4G_slm750_TQ3568.sh: line 16: echo: write error: Invalid argument
Usage:
kill [options] [...]
Options:
[...] send signal to every listed
-, -s, --signal
specify the to be sent
-q, --queue integer value to be sent with the signal
-l, --list=[] list all signal names, or convert one to a name
-L, --table list all signal names in a nice table
-h, --help display this help and exit
-V, --version output version information and exit
For more details see kill.
set dns to 120.80.80.80 221.5.88.88
set def gateway
PING ins-r23tsuuf.ias.tencent-cloud.net from 10.154.10.66 ppp0: 56 bytes of data.
64 bytes from 61.241.54.211: icmp_seq=1 ttl=52 time=24.9 ms
64 bytes from 61.241.54.211: icmp_seq=2 ttl=52 time=31.5 ms
64 bytes from 61.241.54.211: icmp_seq=3 ttl=52 time=22.3 ms
64 bytes from 61.241.54.211: icmp_seq=4 ttl=52 time=19.5 ms
64 bytes from 61.241.54.211: icmp_seq=5 ttl=52 time=22.6 ms
64 bytes from 61.241.54.211: icmp_seq=6 ttl=52 time=23.4 ms
64 bytes from 61.241.54.211: icmp_seq=7 ttl=52 time=25.7 ms
64 bytes from 61.241.54.211: icmp_seq=8 ttl=52 time=27.4 ms
64 bytes from 61.241.54.211: icmp_seq=9 ttl=52 time=24.6 ms
64 bytes from 61.241.54.211: icmp_seq=10 ttl=52 time=24.3 ms
--- ins-r23tsuuf.ias.tencent-cloud.net ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 17267ms
rtt min/avg/max/mdev = 19.469/24.618/31.501/3.067 ms
