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 29], [], [], NULL) = 1 (in [18])
     3.752453 ioctl(18, FIONREAD, [15]) = 0
     0.006689 read(18, "\x08\x86\x07\x00\x00\x00\x00\x00\xd7\x07\x03\x13\x0a\x32"..., 15) = 15
 | 00000  08 86 07 00 00 00 00 00  d7 07 03 13 0a 32 00     ........ .....2.  |
     0.007132 times({tms_utime=103, tms_stime=194, tms_cutime=12, tms_cstime=5}) = 668531
     0.006943 times({tms_utime=103, tms_stime=194, tms_cutime=12, tms_cstime=5}) = 668532
     0.006244 times({tms_utime=103, tms_stime=194, tms_cutime=12, tms_cstime=5}) = 668532
     0.006184 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], [], {14, 990000}) = 1 (out [8], left {14, 990000})
     0.006944 write(8, "AT+ERTCAV=1,\"07/03/19,10:50:00\"\r", 32) = 32
 | 00000  41 54 2b 45 52 54 43 41  56 3d 31 2c 22 30 37 2f  AT+ERTCA V=1,"07/ |
 | 00010  30 33 2f 31 39 2c 31 30  3a 35 30 3a 30 30 22 0d  03/19,10 :50:00". |
     0.017221 times({tms_utime=103, tms_stime=194, tms_cutime=12, tms_cstime=5}) = 668535
     0.001680 times({tms_utime=103, tms_stime=194, tms_cutime=12, tms_cstime=5}) = 668536
     0.001964 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, 950000}) = 1 (in [8], left {14, 890000})
     0.065952 ioctl(8, FIONREAD, [6])   = 0
     0.001756 read(8, "\r\nOK\r\n", 6)  = 6
 | 00000  0d 0a 4f 4b 0d 0a                                 ..OK..            |
     0.003016 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], [18], [], NULL) = 1 (out [18])
     0.002316 write(18, "\x08\x86\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00", 12) = 12
 | 00000  08 86 04 00 00 00 00 00  00 00 00 00              ........ ....     |
     0.021133 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