How to scan for SSID?

Quoting Harmon Seaver <hseavergmail.com>:
>   Try doing a "cat
/proc/net/p80211/wlan0/nsd" and see what you get.
>    I get:
>  prism2_usb version 0.2.3 (Thu Dec 29 18:26:56 CST
2005) '$Id:
> prism2sta.c1751 2005-10-07 21:32:44Z solomon $'

Aha!  The vital clue!

I get "No such file or directory", but the other
file in that directory
claims version 0.2.0, not 0.2.3.  I went back to the 0.2.3
sources and
did make install again just to be sure, but I still get the
0.2.0 module.

I decided that the install must be declining to write over
an existing
file somewhere, so I did a find in the kernel modules and
discovered
I had TWO files named p80211.o and TWO files named
prism2_cs.o -- not
a good sign.  I deleted all of them, and did make install
again, and
now "iwlist wlan0 scan" works.

That's a pretty weird problem to have, but I'm glad to have
found it
and fixed it.  Thank you for your help.

Mark S.

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