A Linux serial port test program. Shows the source code for a Linux serial port test program. Counter Strike V1.5 Full Retail Patch. Program to perform loopback test on serial port - LinuxQuestions. Hello, I want to perfrom loopback test on serial port using a loopback connector. Using a Serial Port on the Host Computer You can set up the virtual serial port in a virtual machine to use a physical serial port on the host computer Serial port. Want to know which application is best for the job? Serial port testing. Is that means my serial port is configured properly From linux planet i came to know like.

See which UARTs where detected in /proc/tty/driver/serial. A line with uart:unknown means: nothing detected (and likely not existent). # cat /proc/tty/driver/serial serinfo:1.0 driver revision: 0: uart:16550A port:000003F8 irq:4 tx:0 rx:0 1: uart:16550A port:000002F8 irq:3 tx:111780 rx:1321 RTS DTR DSR 2: uart:unknown port:000003E8 irq:4 3: uart:unknown port:000002E8 irq:3 If something is connected and driving the lines CTS, DSR or CD (these are input lines) you can even be pretty sure that there actually is something. Same is true for the rx-byte-count.