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best practice please

 
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Old 06-10-2009
Power best practice please
I have a data file that I tail and dump the data into a new file at midnight.
To work I had to use tail -n2 livefile.csv >> storefile.csv. This is ging me 2 or 3 entries at a time into the storefile.csv.
if I continue this then I will have to run a second pass on the file to remove the duplicates from the csv file. all the files start with the date.
I only need one entry per night.

What is the best way to do this ? I have 6 files to do this to each night.

Thank you

Mike

i.e.

06/06/2009,23:56:04,22.8
06/06/2009,23:56:09,22.8
06/06/2009,23:56:14,22.8
06/07/2009,23:56:09,8.5
06/07/2009,23:56:14,8.5
06/08/2009,23:56:09,-2.5
06/08/2009,23:56:14,-2.5
06/09/2009,23:56:09,-6.9
06/09/2009,23:56:14,-6.9

should be
06/06/2009,23:56:14,22.8
06/07/2009,23:56:14,8.5
06/08/2009,23:56:14,-2.5
06/09/2009,23:56:14,-6.9
 
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LEARN ABOUT DEBIAN

csv2rec

CSV2REC(1)							   User Commands							CSV2REC(1)

NAME

       csv2rec - csv to rec converter

SYNOPSIS

       csv2rec [OPTIONS]... [CSV_FILE]

DESCRIPTION

       Convert csv data into rec data.

       -t, --type=TYPE
	      type name for the converted records; if this parameter is ommited then no type is used.

       -s, --strict
	      be strict parsing the csv file.

       -e, --omit-empty
	      omit empty fields.

       --help print a help message and exit.

       --version
	      show version and exit.

AUTHOR

       Written by Jose E. Marchesi.

REPORTING BUGS

       Report bugs to: bug-recutils@gnu.org
       GNU recutils home page: <http://www.gnu.org/software/recutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>

COPYRIGHT

       Copyright (C) 2010, 2011, 2012 Jose E. Marchesi.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       The  full  documentation  for  csv2rec  is maintained as a Texinfo manual.  If the info and csv2rec programs are properly installed at your
       site, the command

	      info csv2rec

       should give you access to the complete manual.

csv2rec 1.4.93							   January 2012 							CSV2REC(1)