...
> compare in /dev un file che rappresenta la periferica; questa appartiene ad un
> utente ed un gruppo ("ls -l /dev/sda" ad esempio mi da "root disk"); cerca in
> "/etc/group" quel gruppo e aggiungi il nome della tua utenza non-root. Al
> riavvio dovresti poter usare quel device anche con l'utenza non-root, magari
> già
> chiudendo la sessione in corso e rientrando.
...
matteo@matteo-desktop:~$ ls -l /dev/usb
totale 0
crw-rw---- 1 root lp 180, 0 2011-08-22 07:21 lp0
matteo@matteo-desktop:~$ ls -l /dev/tty*
crw-rw-rw- 1 root tty 5, 0 2011-08-22 07:21 /dev/tty
crw--w---- 1 root tty 4, 0 2011-08-22 07:21 /dev/tty0
crw------- 1 root root 4, 1 2011-08-22 07:21 /dev/tty1
crw--w---- 1 root tty 4, 10 2011-08-22 07:21 /dev/tty10
crw--w---- 1 root tty 4, 11 2011-08-22 07:21 /dev/tty11
crw--w---- 1 root tty 4, 12 2011-08-22 07:21 /dev/tty12
crw--w---- 1 root tty 4, 13 2011-08-22 07:21 /dev/tty13
crw--w---- 1 root tty 4, 14 2011-08-22 07:21 /dev/tty14
crw--w---- 1 root tty 4, 15 2011-08-22 07:21 /dev/tty15
crw--w---- 1 root tty 4, 16 2011-08-22 07:21 /dev/tty16
crw--w---- 1 root tty 4, 17 2011-08-22 07:21 /dev/tty17
crw--w---- 1 root tty 4, 18 2011-08-22 07:21 /dev/tty18
crw--w---- 1 root tty 4, 19 2011-08-22 07:21 /dev/tty19
crw------- 1 root root 4, 2 2011-08-22 07:21 /dev/tty2
crw--w---- 1 root tty 4, 20 2011-08-22 07:21 /dev/tty20
crw--w---- 1 root tty 4, 21 2011-08-22 07:21 /dev/tty21
crw--w---- 1 root tty 4, 22 2011-08-22 07:21 /dev/tty22
crw--w---- 1 root tty 4, 23 2011-08-22 07:21 /dev/tty23
crw--w---- 1 root tty 4, 24 2011-08-22 07:21 /dev/tty24
crw--w---- 1 root tty 4, 25 2011-08-22 07:21 /dev/tty25
crw--w---- 1 root tty 4, 26 2011-08-22 07:21 /dev/tty26
crw--w---- 1 root tty 4, 27 2011-08-22 07:21 /dev/tty27
crw--w---- 1 root tty 4, 28 2011-08-22 07:21 /dev/tty28
crw--w---- 1 root tty 4, 29 2011-08-22 07:21 /dev/tty29
crw------- 1 root root 4, 3 2011-08-22 07:21 /dev/tty3
crw--w---- 1 root tty 4, 30 2011-08-22 07:21 /dev/tty30
crw--w---- 1 root tty 4, 31 2011-08-22 07:21 /dev/tty31
crw--w---- 1 root tty 4, 32 2011-08-22 07:21 /dev/tty32
crw--w---- 1 root tty 4, 33 2011-08-22 07:21 /dev/tty33
crw--w---- 1 root tty 4, 34 2011-08-22 07:21 /dev/tty34
crw--w---- 1 root tty 4, 35 2011-08-22 07:21 /dev/tty35
crw--w---- 1 root tty 4, 36 2011-08-22 07:21 /dev/tty36
crw--w---- 1 root tty 4, 37 2011-08-22 07:21 /dev/tty37
crw--w---- 1 root tty 4, 38 2011-08-22 07:21 /dev/tty38
crw--w---- 1 root tty 4, 39 2011-08-22 07:21 /dev/tty39
crw------- 1 root root 4, 4 2011-08-22 07:21 /dev/tty4
crw--w---- 1 root tty 4, 40 2011-08-22 07:21 /dev/tty40
crw--w---- 1 root tty 4, 41 2011-08-22 07:21 /dev/tty41
crw--w---- 1 root tty 4, 42 2011-08-22 07:21 /dev/tty42
crw--w---- 1 root tty 4, 43 2011-08-22 07:21 /dev/tty43
crw--w---- 1 root tty 4, 44 2011-08-22 07:21 /dev/tty44
crw--w---- 1 root tty 4, 45 2011-08-22 07:21 /dev/tty45
crw--w---- 1 root tty 4, 46 2011-08-22 07:21 /dev/tty46
crw--w---- 1 root tty 4, 47 2011-08-22 07:21 /dev/tty47
crw--w---- 1 root tty 4, 48 2011-08-22 07:21 /dev/tty48
crw--w---- 1 root tty 4, 49 2011-08-22 07:21 /dev/tty49
crw------- 1 root root 4, 5 2011-08-22 07:21 /dev/tty5
crw--w---- 1 root tty 4, 50 2011-08-22 07:21 /dev/tty50
crw--w---- 1 root tty 4, 51 2011-08-22 07:21 /dev/tty51
crw--w---- 1 root tty 4, 52 2011-08-22 07:21 /dev/tty52
crw--w---- 1 root tty 4, 53 2011-08-22 07:21 /dev/tty53
crw--w---- 1 root tty 4, 54 2011-08-22 07:21 /dev/tty54
crw--w---- 1 root tty 4, 55 2011-08-22 07:21 /dev/tty55
crw--w---- 1 root tty 4, 56 2011-08-22 07:21 /dev/tty56
crw--w---- 1 root tty 4, 57 2011-08-22 07:21 /dev/tty57
crw--w---- 1 root tty 4, 58 2011-08-22 07:21 /dev/tty58
crw--w---- 1 root tty 4, 59 2011-08-22 07:21 /dev/tty59
crw------- 1 root root 4, 6 2011-08-22 07:21 /dev/tty6
crw--w---- 1 root tty 4, 60 2011-08-22 07:21 /dev/tty60
crw--w---- 1 root tty 4, 61 2011-08-22 07:21 /dev/tty61
crw--w---- 1 root tty 4, 62 2011-08-22 07:21 /dev/tty62
crw--w---- 1 root tty 4, 63 2011-08-22 07:21 /dev/tty63
crw--w---- 1 root tty 4, 7 2011-08-22 07:21 /dev/tty7
crw--w---- 1 root tty 4, 8 2011-08-22 07:21 /dev/tty8
crw--w---- 1 root tty 4, 9 2011-08-22 07:21 /dev/tty9
crw------- 1 root root 5, 3 2011-08-22 07:21 /dev/ttyprintk
crw-rw---- 1 root dialout 4, 64 2011-08-22 07:21 /dev/ttyS0
crw-rw---- 1 root dialout 4, 65 2011-08-22 07:21 /dev/ttyS1
crw-rw---- 1 root dialout 4, 74 2011-08-22 07:21 /dev/ttyS10
crw-rw---- 1 root dialout 4, 75 2011-08-22 07:21 /dev/ttyS11
crw-rw---- 1 root dialout 4, 76 2011-08-22 07:21 /dev/ttyS12
crw-rw---- 1 root dialout 4, 77 2011-08-22 07:21 /dev/ttyS13
crw-rw---- 1 root dialout 4, 78 2011-08-22 07:21 /dev/ttyS14
crw-rw---- 1 root dialout 4, 79 2011-08-22 07:21 /dev/ttyS15
crw-rw---- 1 root dialout 4, 80 2011-08-22 07:21 /dev/ttyS16
crw-rw---- 1 root dialout 4, 81 2011-08-22 07:21 /dev/ttyS17
crw-rw---- 1 root dialout 4, 82 2011-08-22 07:21 /dev/ttyS18
crw-rw---- 1 root dialout 4, 83 2011-08-22 07:21 /dev/ttyS19
crw-rw---- 1 root dialout 4, 66 2011-08-22 07:21 /dev/ttyS2
crw-rw---- 1 root dialout 4, 84 2011-08-22 07:21 /dev/ttyS20
crw-rw---- 1 root dialout 4, 85 2011-08-22 07:21 /dev/ttyS21
crw-rw---- 1 root dialout 4, 86 2011-08-22 07:21 /dev/ttyS22
crw-rw---- 1 root dialout 4, 87 2011-08-22 07:21 /dev/ttyS23
crw-rw---- 1 root dialout 4, 88 2011-08-22 07:21 /dev/ttyS24
crw-rw---- 1 root dialout 4, 89 2011-08-22 07:21 /dev/ttyS25
crw-rw---- 1 root dialout 4, 90 2011-08-22 07:21 /dev/ttyS26
crw-rw---- 1 root dialout 4, 91 2011-08-22 07:21 /dev/ttyS27
crw-rw---- 1 root dialout 4, 92 2011-08-22 07:21 /dev/ttyS28
crw-rw---- 1 root dialout 4, 93 2011-08-22 07:21 /dev/ttyS29
crw-rw---- 1 root dialout 4, 67 2011-08-22 07:21 /dev/ttyS3
crw-rw---- 1 root dialout 4, 94 2011-08-22 07:21 /dev/ttyS30
crw-rw---- 1 root dialout 4, 95 2011-08-22 07:21 /dev/ttyS31
crw-rw---- 1 root dialout 4, 68 2011-08-22 07:21 /dev/ttyS4
crw-rw---- 1 root dialout 4, 69 2011-08-22 07:21 /dev/ttyS5
crw-rw---- 1 root dialout 4, 70 2011-08-22 07:21 /dev/ttyS6
crw-rw---- 1 root dialout 4, 71 2011-08-22 07:21 /dev/ttyS7
crw-rw---- 1 root dialout 4, 72 2011-08-22 07:21 /dev/ttyS8
crw-rw---- 1 root dialout 4, 73 2011-08-22 07:21 /dev/ttyS9
matteo@matteo-desktop:~$ lsusb
Bus 002 Device 002: ID 03f0:3011 Hewlett-Packard PSC 1100 series
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 032: ID 091e:0003 Garmin International GPSmap (various models)
Bus 001 Device 030: ID 04e8:685b Samsung Electronics Co., Ltd
Bus 001 Device 008: ID 093a:2468 Pixart Imaging, Inc. SoC PC-Camera
Bus 001 Device 007: ID 0a12:0001 Cambridge Silicon Radio, Ltd
Bluetooth Dongle (HCI mode)
Bus 001 Device 006: ID 0409:005a NEC Corp. HighSpeed Hub
Bus 001 Device 005: ID 0d8c:000c C-Media Electronics, Inc. Audio Adapter
Bus 001 Device 004: ID 0b95:7720 ASIX Electronics Corp. AX88772
Bus 001 Device 002: ID 0409:005a NEC Corp. HighSpeed Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
in ogni caso almeno per provare posso lavorare anche come root.
ciao e grazie matteo
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