#!/usr/bin/perl
$dest="/home/perl/sra/";
print "the source direcotry name:\n";
chomp(my $source=<STDIN>);
opendir($DIR, $source)
or die "cannot open the directory '$source': $!";
@files =@files = grep { /\.log$/ } readdir ($DIR);
foreach my $x (my @files){
open READFILE, "$source/$x";
open WRITEFILE, ">$dest$x";
while(<READFILE>){
chomp;
my @parts = split(/\s/, $_);
print WRITEFILE $parts[1], " ", $parts[0], "\n";
}
close WRITEFILE;
close READFILE;
}
closedir($DIR)