!/usr/bin/perl -w use strict; #print "please input a stringn"; #my $line = <STDIN>; #print $line; #wirte a file open(FH, ">aa.txt") or die $!; print FH "hellon";#向文件写入内容 print FH "OKn"; 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);