byobu-5.5: get_network_interface not working in Mac OSX

[yegle]

/usr/lib/byobu/include/shutil:
get_network_interface() {
        if [ -n "$MONITORED_NETWORK" ]; then
                _RET="$MONITORED_NETWORK"
        else
        local Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT
        while read Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT; do
            [ "$Mask" = "00000000" ] && break
        done < /proc/net/route
        _RET="$Iface"
    fi
}

But there's no procfs support on Mac OSX thus this doesn't work in Mac OSX.

It's better to test if the current system has procfs support by determining if there's /proc directory.

[yegle (cnyegle)]

btw, this bug exists on the latest 6.7 too.

[Dustin Kirkland  (kirkland)]

Okay, thanks for the report.

As I don't have access to a Mac OSX system, can you propose some shell code that would do the equivalent of this on Mac? I'm happy to test and special case it, but I'll need working logic for OSX.

Thanks!

[yegle (cnyegle)]

This may works.

$ /sbin/route get default
   route to: default
destination: default
       mask: default
    gateway: 192.168.1.1
  interface: en1
      flags: <UP,GATEWAY,DONE,STATIC,PRCLONING>
 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire
       0 0 0 0 0 0 1500 0

$ /sbin/route get default|grep interface:|awk '{print $2}'
en1

Manpage of OSX's BSD style /sbin/route command: https://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man8/route.8.html

[Dustin Kirkland  (kirkland)]

Thanks.

Note that you can always manually set MONITORED_NETWORK in your ~/.byobu/statusrc to MONITORED_NETWORK=en1.

[Dustin Kirkland  (kirkland)]

Okay, committing something like this. Please give it a test. Thanks!

[Dustin Kirkland  (kirkland)]

Committed revision 1919. Will be in byobu-5.13.