ifdown usb0
edit file
ifup wlo1
Will avoid the need to reboot.
You can use mapping lines to achieve the same thing.
mapping eth0
script /usr/local/sbin/map-scheme
iface eth0_home inet static
address 192.168.1.3
netmask 255.255.255.0
gateway 192.168.1.254
iface eth0_work inet dhcp
and the map-scheme script needs to output eth0_home or eth0_work
depending on where the machine thinks it is.
(In this case I'd ping the home gatwway to detect. $1 will be eth0 in
the script)
On my laptop I have:
mapping intwlan0
script /usr/local/sbin/map-scheme.wlan
map 88:03:55:E0:AC:7F Brandon EE-kbfcwm
map B4:FB:E4:4D:28:4B MarshamCourt MarshamCourt
map 78:8A:20:2A:BE:C6 MarshamCourt MarshamCourt
map any unknown Avanti_Free_WiFi
map any hotel BWGarstangCountryHotel
and my script looks for access points to connect to.
This was written way back in the dark ages where real men used the
console - but it still works today :-)
On Sat, 19 Mar 2022, Stella Ashburne wrote:
Hi
There are instances in which my machine is connected to a mobile hotspot. And
in some situations, it's connected to a smartphone via USB tethering. And when
I'm in the office, I may connect it to a LAN cable.
Below are the contents of my /etc/network/interfaces file:
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
source /etc/network/interfaces.d/*
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
#allow-hotplug enx61s07
#iface enx60a4b79d7f48 inet static
# address 192.168.1.35/24
# gateway 192.168.1.1
# dns-* options are implemented by the resolvconf package, if installed
# dns-nameservers 1.1.1.1 8.8.8.8
# The primary network interface for USB tethering
allow-hotplug usb0
iface usb0 inet dhcp static
address 192.168.42.35
gateway 192.168.42.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 1.1.1.1 8.8.8.8
# The primary network interface for wireless connections
#allow-hotplug wlo1
#iface wlo1 inet dhcp static
# wpa-ssid Osia27
# wpa-psk string-of-alphanumberice-characters
# address 192.168.43.28
# gateway 192.168.43.1
# dns-nameservers 1.1.1.1 8.8.8.8
Questions:
1. At the moment, if I wish to change to using a mobile hotspot from USB
tethering, I'll edit the /etc/network/interfaces file, uncomment the applicable
lines under #The primary network interface for wireless connections and place a
# in front of all the lines under #The primary network interface for USB
tethering
Instead of carrying out the above steps, is there a neater and simpler way?
2. What is the command to type in a terminal after I have made changes to the
/etc/network/interfaces file without rebooting my machine?
Best regards.
Stella
