net widget: failing iface autodetection

[vojinc]

Hello everyone.I have a problem with lain widget net.lua.I use a powerarrow-darker in my Slackware linux on laptop.Everything work without a problem,my wifi eth work but widget for download and uploud don't work.When i start my OS first on screen show icon no_net.png.Please help me.Thank you for a cooperation.

[lcpz]

If you are sure you have an active network device, then the widget is faliing to autodetect it.

But you can set it manually.

Execute the following command:

ip link show

the device which state is UP is the one you have to manually set as iface in the net widget, like this:

-- Net
neticon = wibox.widget.imagebox(beautiful.widget_net)
neticon:buttons(awful.util.table.join(awful.button({ }, 1, function () awful.util.spawn_with_shell(iptraf) end)))
netwidget = lain.widgets.net({
    iface = "your UP device", -- set it here
    settings = function()
        widget:set_markup(markup("#7AC82E", " " .. net_now.received)
                          .. " " ..
                          markup("#46A8C3", " " .. net_now.sent .. " "))
    end
})

[vojinc]

Thank you very much ,it`s work.Great

[Incognito4nonymous]

Hello ! It is I again, I'll just drop this here, to make it work, simply change that line:

local ws = helpers.read_pipe("ip link show | cut -d' ' -f2,9")

Into

local ws = helpers.read_pipe("/usr/sbin/ip link show | cut -d' ' -f2,9")

Well if it doesn't for you, I guess you can simply fall back into the manual method.
Cheers !

[lcpz]

Just /usr/bin is working too?

[Incognito4nonymous]

Negative, I bet it is because it is intended to be ran with elevated privileges, which is why it is in the /usr/sbin folder.
Still under Slackware by the way 😄
However, to simplify your code, it works with just /sbin
With the hope that my contribution was useful.

[lcpz]

Maybe you are not a sudoer?

[Incognito4nonymous]

I don't use sudo at all, I'm using "su-c" when I need elevated privileges, old school mode.

[lcpz]

That's the explanation then.

I've never met a su purist before, probably because sudo is a safe alternative since 1986.

I'll switch to /usr/sbin.

[paescuj]

Now, it doesn't work anymore under Gentoo, because the binary is located at /bin/ip. I think we need another solution here, since there seems to be a inconsistency with the location between linux distributions.

[Incognito4nonymous]

Well, I think most Slackware users are Su purists since sudo is a pain in the ass to configure properly on that distribution.

And about the location varying, it is indeed a problem, perhaps a script to detect the location of the executable should be created with wereis or something like that, after all the iface detection in the net widget is pretty much using the same technique.
I also had the same problem with the Bat widget and with the Temp one, the input file location is varying...
Or to keep it simple and stupid, just a Wiki entry to explain how to modify the files in order to make them work. 😉

[lcpz]

The autodetection function is just a simple plus and I don't want to bloat it.

I revert to previous status.

[Incognito4nonymous]

Okay, at least that page will help anyone having this problem.

[paescuj]

The autodetection function is just a simple plus and I don't want to bloat it.

I quite agree.

I revert to previous status.

Thanks!