in reply to (elbie): Last two rows or a csv file.
in thread Last two rows or a csv file.

This is what I've got:
#!/usr/bin/perl open (FILE, "edidocs.csv") or die "Can't open file $!\n"; @lines = <FILE>; while ($line = pop @lines) { print $line "\n"; }
It prints the rows from last to first. Now I need to get the first two rows timestamp and do the calulations. Then we'll be good to go!

qball~"I have node idea?!"

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(elbie 2): Last two rows or a csv file.
by elbie (Curate) on Aug 18, 2001 at 02:09 UTC
    If you don't need to store the contents of the file, try this:

    open (FILE, "edidocs.csv") or die "Can't open file $!\n"; my( $curr_time, $prev_time ); # Sorry about the $ in the original while( <FILE> ) { $prev_time = $curr_time; $curr_time = ( split /,/ )[1]; }

    If you do need to store the whole file, then the last two lines are stored in $lines( $#lines - 1 ) and $lines( $#lines ) of your example before you popped them off the stack.


      Great! This works beautifully. Now I'm onto another stumbling block. How would I get the same percentage calculation for the entire month using the epoch timestamp in the csv file?

      qball~"I have node idea?!"