Process 74 attached - interrupt to quit
     0.000000 select(31, [4 5 6 7 8 9 10 11 12 15 16 17 18 19 20 21 22 23 24 25 26 27 28], [], [], NULL) = 1 (in [12])
     5.654735 accept(12, {sa_family=AF_FILE, path="	"}, [2]) = 29
     0.006799 fcntl64(29, F_GETFL)      = 0x2 (flags O_RDWR)
     0.006190 fcntl64(29, F_SETFL, O_RDWR|O_NONBLOCK) = 0
     0.006516 select(31, [4 5 6 7 8 9 10 11 12 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29], [], [], NULL) = 1 (in [29])
     0.006962 ioctl(29, FIONREAD, [20]) = 0
     0.006080 read(29, "\x02\x81\x0c\x00\x00\x00\x00\x00\xe3\x01\x00\x00\x00\x00"..., 20) = 20
 | 00000  02 81 0c 00 00 00 00 00  e3 01 00 00 00 00 be 41  ........ .......A |
 | 00010  00 00 00 00                                       ....              |
     0.007353 select(30, [], [29], [], {0, 0}) = 1 (out [29], left {0, 0})
     0.006484 write(29, "\x02\x81\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00", 12) = 12
 | 00000  02 81 04 00 00 00 00 00  00 00 00 00              ........ ....     |
     0.007883 select(31, [4 5 6 7 8 9 10 11 12 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29], [], [], NULL) = 1 (in [29])
     0.004945 ioctl(29, FIONREAD, [8])  = 0
     0.001754 read(29, "\x03\x86\x00\x00\x00\x00\x00\x00", 8) = 8
 | 00000  03 86 00 00 00 00 00 00                           ........          |
     0.002342 times({tms_utime=35, tms_stime=92, tms_cutime=12, tms_cstime=5}) = 434936
     0.002344 times({tms_utime=35, tms_stime=92, tms_cutime=12, tms_cstime=5}) = 434936
     0.001684 times({tms_utime=35, tms_stime=92, tms_cutime=12, tms_cstime=5}) = 434936
     0.001802 select(31, [4 5 6 7 8 9 10 11 12 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29], [8], [], {15, 0}) = 1 (out [8], left {15, 0})
     0.002331 write(8, "AT+CBC\r", 7)   = 7
 | 00000  41 54 2b 43 42 43 0d                              AT+CBC.           |
     0.002533 times({tms_utime=35, tms_stime=92, tms_cutime=12, tms_cstime=5}) = 434937
     0.001687 times({tms_utime=35, tms_stime=92, tms_cutime=12, tms_cstime=5}) = 434937
     0.001694 select(31, [4 5 6 7 8 9 10 11 12 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29], [], [], {14, 990000}) = 1 (in [8], left {14, 930000})
     0.062719 ioctl(8, FIONREAD, [20])  = 0
     0.001763 read(8, "\r\n+CBC: 1,20\r\n\r\nOK\r\n", 20) = 20
 | 00000  0d 0a 2b 43 42 43 3a 20  31 2c 32 30 0d 0a 0d 0a  ..+CBC:  1,20.... |
 | 00010  4f 4b 0d 0a                                       OK..              |
     0.003110 select(31, [4 5 6 7 8 9 10 11 12 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29], [29], [], NULL) = 1 (out [29])
     0.002327 write(29, "\x03\x86\x06\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x14"..., 14) = 14
 | 00000  03 86 06 00 00 00 00 00  00 00 00 00 01 14        ........ ......   |
     0.025219 select(31, [4 5 6 7 8 9 10 11 12 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29], [], [], NULL) = 1 (in [29])
     0.002273 ioctl(29, FIONREAD, [0])  = 0
     0.001766 close(29)                 = 0
     0.002377 select(31, [4 5 6 7 8 9 10 11 12 15 16 17 18 19 20 21 22 23 24 25 26 27 28], [], [], NULL