perl 打开和关闭文件

 1 #!/usr/bin/perl -w
 2 use strict;
 3
 4 #print "please input a string\n";
 5 #my $line = <STDIN>;
 6 #print $line;
 7
 8 #wirte a file
 9 open(FH, ">aa.txt") or die $!;
10
11 print FH "hello\n";#向文件写入内容
12 print FH "OK\n";
13
14 close(FH);
15
16 #open a file
17 open(FH, "aa.txt") or die $!;
18 my @f = <FH>;#将文件内容读出
19 print @f;
20
21 close(FH);