Automatically Connect To A WPA Protected Access Point at Boot

A prerequisite is to read the instructions here: Easy Way: wicd.
To use this guide, one must follow the instructions under the More Advanced Setup: using wireless tools section and the Connecting to a WPA-PSK secured access point.

Specifically you must have a “wpa_configure.conf” file and these commands must connect you to the desired access point.

wpa_supplicant -i*interface* -c/opt/wpa_configure.conf &
udhcpc -i *interface*

We need to find the absolute locations of 2 commands wpa_supplicant and udhcpc.

We can do this using the find command.

find / -name'filename' 2> /dev/null

For me:

find / -name 'wpa_supplicant' 2> /dev/null

Results in:

/tmp/tcloop/wpa_supplicant
/tmp/tcloop/wpa_supplicant/usr/local/sbin/wpa_supplicant
/usr/local/sbin/wpa_supplicant
/usr/local/tce.installed/wpa_supplicant

And

find / -name'udhcpc'

Results in:

/sbin/udhcpc
/usr/share/udhcpc