Hi, I want to use my serial port with a board. it works very well with windows I configure the speed to 115200 bauds, no parity, stop bit , no flow control etc... I did the same thing under fedoraC3 with stty I configure the speed like that #stty -F /dev/ttyS0 speed 115200 cs8 parenb -cstopb crtscts and when I use -a it print: speed 115200 baud; rows 0; columns 0; line = 0; intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>; eol2 = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 0; parenb -parodd cs8 hupcl -cstopb cread clocal crtscts -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff -iuclc -ixany -imaxbel opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0 isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke now I want to open and use the specified DEVICE instead of stdin but how can I do that: I tried with: # /dev/ttyS0 bash: /dev/ttyS0: Permission denied I tried: #stty -F /dev/ttyS0 speed 115200 baud; line = 0; -brkint -imaxbel how can I do that? please. regards Découvrez le nouveau Yahoo! Mail : 250 Mo d'espace de stockage pour vos mails ! Créez votre Yahoo! Mail sur http://fr.mail.yahoo.com/