nixCraft

Hi,

I have gps receiver log..its giving readings .like below

Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
GPSD,R=1
$GPGSV,3,1,11,08,16,328,40,11,36,127,00,28,33,283, 39,20,11,165,00*71
$GPGSV,3,2,11,17,24,208,39,27,11,097,00,13,87,174, 00,19,31,042,00*70
$GPGSV,3,3,11,25,43,033,38,03,07,037,00,23,47,150, 00*44
$GPGGA,111503,0833.6323,N,07652.7685,E,1,04,1.60,1 6.69,M,-94.088,M,,*58
$GPRMC,111503,A,0833.6323,N,07652.7685,E,0.1866,25 6.540,220609,,*2A
$GPGSA,A,3,08,28,17,25,,,,,,,,,0.0,1.6,16.3*02
$GPGGA,111504,0833.6316,N,07652.7682,E,1,04,1.60,1 8.70,M,-94.088,M,,*58
$GPRMC,111504,A,0833.6316,N,07652.7682,E,0.1866,25 6.540,220609,,*2C
$GPGSA,A,3,08,28,17,25,,,,,,,,,0.0,1.6,16.3*02
$PGRME,0.00,M,0.00,M,0.00,M*1E
$GPGGA,111505,0833.6328,N,07652.7684,E,1,04,1.60,2 5.15,M,-94.088,M,,*5F
$GPRMC,111505,A,0833.6328,N,07652.7684,E,0.1488,23 8.090,220609,,*2A
$GPGSA,A,3,08,28,17,25,,,,,,,,,0.0,1.6,16.3*02
$GPGGA,111506,0833.6336,N,07652.7654,E,1,04,1.60,2 7.75,M,-94.088,M,,*5A
$GPRMC,111506,A,0833.6336,N,07652.7654,E,0.1866,25 6.540,220609,,*27
$GPGSA,A,3,08,28,17,25,,,,,,,,,0.0,1.6,16.3*02
$PGRME,0.00,M,0.00,M,0.00,M*1E
$GPGGA,111507,0833.6341,N,07652.7644,E,1,04,1.60,2 9.31,M,-94.088,M,,*54
$GPRMC,111507,A,0833.6341,N,07652.7644,E,0.1866,25 6.540,220609,,*27
$GPGSA,A,3,08,28,17,25,,,,,,,,,0.0,1.6,16.3*02
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what i need?
Shell script has to check for each log line starting word with "$GPRMC", if line starts with $GPRMC, then that line has to append a new file data.txt

For example:

when i started the gps receiver log is giving
first line: Trying 127.0.0.1... has to check whether it is started with $GPRMC
then when the second line came log again has to check..like...up to terminating the log.
this process has to start when the log started...

if the line starts with $GPRMC the line has to append new line...


thanks in advance,

sravan

Please give this a try.

This will generate the following from your test data:
I created a file called data1 with your test data for the input file. Of course swap data1 file out for your log file.



Good Luck

Jaysunn

If you need to append to the same file use the double redirection.