!/usr/bin/perl -w
use strict;
#print \”please input a string\\n\”;
#my $line = <STDIN>;
#print $line;
#wirte a file
open(FH, \”>aa.txt\”) or die $!;
print FH \”hello\\n\”;#向文件写入内容
print FH \”OK\\n\”;
close(FH);
#open a file
open(FH, \”aa.txt\”) or die $!;
my @f = <FH>;#将文件内容读出
print @f;
close(FH);