eigentlich nicht uninteresant das hat irgendwas mit udev zu tun
Code:
bash-3.1# udevtest /dev/ttyUSB0
parse_file: reading '/etc/udev/rules.d/50-udev.rules' as rules file
parse_file: reading '/etc/udev/rules.d/60-bluetooth.rules' as rules file
parse_file: reading '/etc/udev/rules.d/60-pcmcia.rules' as rules file
parse_file: reading '/etc/udev/rules.d/64-device-mapper.rules' as rules file
add_to_rules: link priority=50
parse_file: reading '/etc/udev/rules.d/75-network-devices.rules' as rules file
parse_file: reading '/etc/udev/rules.d/75-optical-devices.rules' as rules file
parse_file: reading '/etc/udev/rules.d/80-libmtp.rules' as rules file
parse_file: reading '/etc/udev/rules.d/80-libnjb.rules' as rules file
parse_file: reading '/etc/udev/rules.d/80-libpisock.rules' as rules file
parse_file: reading '/etc/udev/rules.d/80-libsane.rules' as rules file
parse_file: reading '/etc/udev/rules.d/90-hal.rules' as rules file
parse_file: reading '/etc/udev/rules.d/99-fuse.rules' as rules file
unable to open device '/dev/ttyUSB0'

und ls -l /dev/ttyUSB0 giebt
Code:
bash-3.1$ ls -l /dev/ttyUSB0 
lrwxrwxrwx 1 root root 8 2007-12-18 18:45 /dev/ttyUSB0 -> tts/USB0