Ok!
Tried something like this:
Code:
[root@kindle /dev]# modemcmd -c "AT+CMGF=1" -v
modemcmd 0.3.3 Copyright (C) 2008, 2009 Amazon Technologies, Inc. All rights reserved.
[root@kindle /dev]# echo "AT+CMGF=1" > /dev/tts/USB0 && cat /dev/tts/USB0
[root@kindle tts]# echo "AT+CMGF=1" > /dev/tts/USB1 && cat /dev/tts/USB1
[root@kindle tts]# cat USB1
[root@kindle tts]# tail USB0
tail: read error: Resource temporarily unavailable
[root@kindle tts]# lsof USB1
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
wand 2710 root 8u CHR 188,1 0t0 33000 USB1
[root@kindle tts]# lsof USB0
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
pppd 13661 root 7u CHR 188,0 0t0 33004 USB0