Every resource I have seen / used always say how to COPY or paste entries into wpa_supplicant.conf.

The question is

Is there a document actually explaining , in "5 W's" style, purpose these entries?

I am enclosing annotated entries in my wpa_supplicant.conf to illustrate my post questions.

This is an original with single network entry:

#default original /etc/wpa_supplicant.conf network={ ssid="mywireless" #psk="secretpassphrase" psk=7b271c9a7c8a6ac07d12403a1f0792d7d92b5957ff8dfd56481ced43ec6a6515 }

#temporary commented out

Now what is the purpose of this ctrl_interface and where did it come from ?

#ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev

What are we updating and when ??


Now for change - this is selfexplanatory #country=US


# ssid="testing" # psk="jim" # }

  • Which 'Software install' menu is that? Can't find it in the latest Raspbian Desktop.
    – Dirk
    Aug 2, 2018 at 9:06

1 Answer 1


On a Raspberry Pi the software release is contained in /etc/os-release. You can get it with:

rpi ~$ cat /etc/os-release

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