The orignal proposed code had a memory leak when returning true.
Furthermore I included the handy BEGINS_WITH macro of i3 which makes the
code (IMHO) a lot more readable.
The _first_ option for ethernet devices now uses the link in sysfs to determine
if it's a real device or just a virtual one (i.e veth** devices created by docker).
Currently i3status differentiates wireless and wired devices based
on the existence of wireless directory inside the device's sysfs
directory. This approach seems to cause 3g modems to be incorrectly
identified as the first ethernet device.
This commit solves this problem by using DEVTYPE variable from
uevent file.
Signed-off-by: Cihangir Akturk <cakturk@gmail.com>
Since we have deterministic device names in Linux, these strings are a
much better default in the i3status config than "eth0" and "wlan0" (what
we used before).
