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我重新啓動WiFi接口是這樣的:重新啓動WiFi接口完全independentely
interface = 'wlan0'
proc = subprocess.Popen(['ifdown {}'.format(interface)], shell=True)
proc.communicate()
proc.wait()
time.sleep(1)
proc = subprocess.Popen(['ifup {}'.format(interface)], shell=True)
proc.communicate()
proc.wait()
連接成功後,我看到的wpa_supplicant & dhclient的過程是這樣的:
root 19627 1 0 02:22 ? 00:00:00 /bin/sh -c /usr/bin/python3 /opt/awaregui/bin/app.py >>/var/log/awaregui_error.log
root 19628 19627 57 02:22 ? 00:00:16 /usr/bin/python3 /opt/awaregui/bin/app.py
root 19791 2 0 02:22 ? 00:00:00 [kworker/1:1]
root 19833 1 0 02:22 ? 00:00:00 /sbin/wpa_supplicant -s -B -P /run/wpa_supplicant.wlan0.pid -i wlan0 -D nl80211,wext -c /etc/wpa_supplicant/wpa_supplicant.conf
root 19855 2 0 02:23 ? 00:00:00 [kworker/u8:2]
root 19859 2 0 02:23 ? 00:00:00 [kworker/3:1]
root 19961 1 0 02:23 ? 00:00:00 dhclient -v -pf /run/dhclient.wlan0.pid -lf /var/lib/dhcp/dhclient.wlan0.leases wlan0
(進程ID是19833和19961)
問題是,如果我停止父級python腳本,兩個wpa_supplica nt & dhclient也被殺死。 因此,wifi接口掉線了。
是否有任何方式相當獨立地調用ifdown wlan0
和ifup wlan0
?