Perl文件操作 Perl学习笔记之文件操作
人气:0想了解Perl学习笔记之文件操作的相关内容吗,在本文为您仔细讲解Perl文件操作的相关知识和一些Code实例,欢迎阅读和指正,我们先划重点:Perl,文件操作,下面大家一起来学习吧。
Perl对文件的操作,跟其它的语言类似,无非也就是打开,读与写的操作。
1. 打开文件
#! c:/perl/bin/perl -w use utf8; use strict; use warnings; my $filename = 'test.txt'; # 或者用绝对路径,如: c:/perl/Learn/test.txt if(open(MYFILE,$filename)) # MYFILE是一个标志 { printf "Can open this file:%s!", $filename; close(MYFILE); } else{ print "Can't open this file!"; }
2. 读取文件
#! c:/perl/bin/perl -w use utf8; use strict; use warnings; my $filename = 'test.txt'; if(open(MYFILE,$filename)) { my @myfile = <MYFILE>; #如果要读取多行,用此方法,如果只读取一行为:$myfile = <>; my $count = 0; #要读取的行数,初始值为0 printf "I have opened this file: %s\n", $filename; while($count < @myfile){ #遍历 print ("$myfile[$count]\n"); #注意此种写法. $count++; } close(MYFILE); } else{ print "I can't open this file!"; } exit;
3. 写入文件
#! c:/perl/bin/perl -w use utf8; use strict; use warnings; my $filename = 'test.txt'; if(open(MYFILE,">>".$filename)) #此种写发,添加不删除 { #此种写法,重写文件内容 MYFILE,">".$filename print MYFILE "Write File appending Test\n"; close(MYFILE); } else{ print "I can't open this file!"; } exit;
加载全部内容