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Re: Re: Re: combine multiple files into one (line by line)

by extremely (Priest)
on Apr 05, 2001 at 23:36 UTC ( #70245=note: print w/ replies, xml ) Need Help??


in reply to Re: Re: combine multiple files into one (line by line)
in thread combine multiple files into one (line by line)

I don't think he was intending to load the entire file into memory. The trick is to keep an array of open FILEHANDLES and read one line at a time from each...
#!/usr/bin/perl -w use strict; use IO::File; #interleave files, first argument is line count, rest are files. my $lc = shift; my @fhs; foreach (@ARGV) { my $fh = new IO::File; open ($fh, "<$_"); push @fhs, $fh; } while (--$lc) { foreach (@fhs) { print scalar(<$_>); } }

Tested minimally but the path is clear from here I hope.

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