After installing the gammu and configuring the .gammrc on my home page, this error is generated and I do not know which is the file to which I have to give "sufficient permissions.
rafael @ Aspire-one-Lubuntu16: ~ $ gammu sendsms TEXT 04165181317 -text "Hola.."
Error opening the device, you do not have sufficient permissions ".
rafael @ Aspire-one-Lubuntu16: ~ $
This is my configuration file :
rafael@Aspire-one-Lubuntu16:~$ cat .gammurc
[gammu]
port = /dev/ttyUSB0
connection = at
[gammu1]
port = /dev/ttyUSB1
connection = at
[gammu2]
port = /dev/ttyUSB2
connection = at
the ttyUSB * files belong to the dialout group
rafael@Aspire-one-Lubuntu16:~$ ls -l /dev/ttyUSB*
crw-rw---- 1 root dialout 188, 0 ago 8 20:00 /dev/ttyUSB0
crw-rw---- 1 root dialout 188, 1 ago 8 18:52 /dev/ttyUSB1
crw-rw---- 1 root dialout 188, 2 ago 8 19:19 /dev/ttyUSB2
And add my user "rafael to this group:
usermod -a -G dialout rafael