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Re: WiFi without Network Manager





On Thu, Feb 14, 2019 at 10:54 PM mett <mett@xxxxxxxx> wrote:
On 2019年2月15日 8:23:04 JST, Kenneth Parker <sea7kenp@xxxxxxxxx> wrote:
On Tue, Feb 12, 2019 at 9:30 AM <tomas@xxxxxxxxxx> wrote:
On Tue, Feb 12, 2019 at 09:10:08AM -0500, Kenneth Parker wrote:
> I occasionally run, what I will describe as "Coffee House Lan Parties".
> That means I connect to the Internet via WiFi, and then supply a "Local
> Ethernet" network (with ipv4), for others to connect with.
>
> Doing this with Network Manager "worked", but only with "loud complaining"
> by Network Manager.
>
> What I want now, are the "steps" that Network Manager takes, to bring up
> WiFi, so I can create an "in-demand" Root-level Script that I can run, for
> the WiFi part.  (The rest works fine, using /etc/network/interfaces).

Actually ifupdown is perfectly capable of doing the work (well, it just
orchestrates it, but it commes with all the necessary scripts for that).

Here's my stanza in /etc/network/interfaces (passphrase somewhat decorated,
to protect the innocent):

  iface wlan0 inet dhcp
    wpa-ssid dubcek
    wpa-psk XXXXXXXXXXXXXXXX

That's all it is needed for ifup to set up wlan0, go out with DHCP and
fetch an IP address from our local DHCP server.

Of course it relies on wpasupplicant and dhclient to do the actual
magic behind the scenes.

What did you have to do, the first time?  When you were determining the Network Name (wpa-ssid)?  (Having to know everything in advance isn't too cool,  when you visit multiple Coffee Houses. And connecting to the wrong ssid could get you into some  *SERIOUS*  trouble!)

I am doing my own investigation, by the way, finding general information  on a "competing" Distro (Arch):


This site suggests that wpa_cli gives useful information,  so I will see what that looks like, and then use your interfaces method.

Enjoy simple life :-)

Cheers
-- t

Thanks!

Kenneth Parker 

sudo iwlist wlan0 scan

Many Thanks.  Just what I needed! 

<https://www.linuxjournal.comcontent/wi-fi-command-line>

And thanks for the link.  If they're still in business, they are worth my Subscription!

Kenneth Parker