damian said:
i have two files "daily.txt" and "monthly.txt". they are both in CSV format. how will i be able to read the last 3 lines of daily.txt and write those 3 lines in front of monthly.txt then remove those 3 lines from daily.txt. thanks in advance
(And the posting from Corion fails to rewrite "daily.txt", thus leading me to write the following:)

Untested code follows: 

local $/; # make undef
my @daily = do { local @ARGV = "daily.txt"; <> };
my @monthly = do { local @ARGV = "monthly.txt"; <> };
die "nothing to transfer" unless @daily > 3;
my @transfer = splice @daily, -3; # last three of @daily becomes @tran
+sfer
open OUT, ">daily.txt" or die "Cannot recreate daily.txt: $!";
print OUT @daily;
close OUT;
open OUT ">monthly.txt" or die "Cannot recreate monthly.txt: $!";
print OUT @transfer, @monthly;
close OUT;

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-- Randal L. Schwartz, Perl hacker

In reply to Re: Reading and writing to files by merlyn
in thread Reading and writing to files by damian

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