iOS view real-time console log on mac terminal

deviceconsole from rpetrich is a much less wacked-out solution than ideviceconsole above. My fork of it builds and runs in Xcode 5 out of the box, and the Build action will install the binary to /usr/local/bin for ease of use.
As an additional helpful bit of info, I use it in the following style which makes it easy to find the device I want in my shell history and removes unnecessary > lines that deviceconsole prints out.
deviceconsole -d -u | uniq -u && echo “”

https://github.com/rpetrich/deviceconsole