DOKK / manpages / debian 10 / ifscheme / essidscan.8.en
ESSIDSCAN(8) Commands ESSIDSCAN(8)

essidscan - scan for ESSID corresponding to available WLAN access points

In /etc/network/interfaces:

mapping <interface> script essidscan

The essidscan utility is used to tell the ifup and ifdown utilities about the current SSID of the WLAN currently being accessed. It can be used to map the SSID name to an iface stanza.

A sample /etc/network/interfaces may look like this:


mapping hotplug
script /etc/network/essidscan
map SSIDONE wlan-work
map SSIDTWO wlan-work
map HOME


iface wlan-work inet dhcp
wireless-key 1234-5678-9ABC-DEF0-1234-5678-9A
wireless-keymode restricted


iface HOME inet static
address 192.168.2.4
netmask 255.255.255.0
gateway 192.168.2.1
wireless-essid HOME
wireless-key s:somepassword
wireless-keymode open


iface DEFAULT inet dhcp

/etc/network/interfaces
the interfaces definition file
/etc/network/run/ifstate
a record of the current state of the interfaces, managed by ifup and ifdown

interfaces(5) ifscheme(8) ifup(8) ifdown(8)

Tor Slettnes <tor@slett.net>