write(3, "\1\0\0\0\0\0\0\0", 8)         = 8
write(2, "TX: \"AT\\r\"\n", 11TX: "AT\r"
)         = 11
ppoll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN|POLLOUT}], 2, {tv_sec=0, tv_nsec=0}, NULL, 0) = 2 ([{fd=3, revents=POLLIN}, {fd=5, revents=POLLOUT}], left {tv_sec=0, tv_nsec=0})
read(3, "\2\0\0\0\0\0\0\0", 8)          = 8
write(5, "AT\r", 3)                     = 3
ppoll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN|POLLOUT}], 2, NULL, NULL, 0) = 1 ([{fd=5, revents=POLLOUT}])
write(3, "\1\0\0\0\0\0\0\0", 8)         = 8
ppoll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}], 2, NULL, NULL, 0) = 1 ([{fd=3, revents=POLLIN}])
read(3, "\1\0\0\0\0\0\0\0", 8)          = 8
ppoll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}], 2, NULL, NULL, 0

< DEVICE REMOVED HERE >

) = 1 ([{fd=5, revents=POLLIN|POLLERR|POLLHUP}])
read(5, "", 32768)                      = 0
ppoll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}], 2, NULL, NULL, 0) = 1 ([{fd=5, revents=POLLIN|POLLERR|POLLHUP}])
read(5, "", 32768)                      = 0
ppoll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}], 2, NULL, NULL, 0) = 1 ([{fd=5, revents=POLLIN|POLLERR|POLLHUP}])
read(5, "", 32768)                      = 0
ppoll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}], 2, NULL, NULL, 0) = 1 ([{fd=5, revents=POLLIN|POLLERR|POLLHUP}])
read(5, "", 32768)                      = 0
ppoll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}], 2, NULL, NULL, 0) = 1 ([{fd=5, revents=POLLIN|POLLERR|POLLHUP}])
read(5, "", 32768)                      = 0
ppoll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}], 2, NULL, NULL, 0) = 1 ([{fd=5, revents=POLLIN|POLLERR|POLLHUP}])
read(5, "", 32768)                      = 0
ppoll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}], 2, NULL, NULL, 0) = 1 ([{fd=5, revents=POLLIN|POLLERR|POLLHUP}])
read(5, "", 32768)                      = 0