https://community.hpe.com/t5/operating-system-hp-ux/serial-communication-set-up/m-p/2483857#M18558 I created a serial device (tty0p0) using SAM.<BR />I'm able to write to the device ( I can see the data on<BR />the other side of the null modem cable),<BR />but I can not read any data<BR /><BR />SAM also removed read access to /dev/tty0p0,<BR />I did change it using chmod +r /dev/tty0p0, but still no luck.<BR /><BR />Is this port some how locked ? (I checked /var/spool/locks and is not locked there) Wed, 17 Jan 2001 23:00:56 GMT Alberto Perez 2001-01-17T23:00:56Z https://community.hpe.com/t5/operating-system-hp-ux/serial-communication-set-up/m-p/2483857#M18558 I created a serial device (tty0p0) using SAM.<BR />I'm able to write to the device ( I can see the data on<BR />the other side of the null modem cable),<BR />but I can not read any data<BR /><BR />SAM also removed read access to /dev/tty0p0,<BR />I did change it using chmod +r /dev/tty0p0, but still no luck.<BR /><BR />Is this port some how locked ? (I checked /var/spool/locks and is not locked there) Wed, 17 Jan 2001 23:00:56 GMT https://community.hpe.com/t5/operating-system-hp-ux/serial-communication-set-up/m-p/2483857#M18558 Alberto Perez 2001-01-17T23:00:56Z