這篇文章主要介紹了Perl學習筆記之文件操作,本文分別給出了打開文件、讀取文件、寫入文件代碼實例,需要的朋友可以參考下
Perl對文件的操作，跟其它的語言類似，無非也就是打開，讀與寫的操作。
1. 打開文件
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#! c:/perl/bin/perl -w
use utf8;
use strict;
use warnings;
my $filename = 'test.txt'; # 或者用絕對路徑,如: c:/perl/Learn/test.txt
if(open(MYFILE,$filename)) # MYFILE是一個標志
{
printf "Can open this file:%s!", $filename;
close(MYFILE);
}
else{
print "Can't open this file!";
}
2. 讀取文件
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#! c:/perl/bin/perl -w
use utf8;
use strict;
use warnings;
my $filename = 'test.txt';
if(open(MYFILE,$filename))
{
my @myfile = <MYFILE>; #如果要讀取多行，用此方法，如果只讀取一行為:$myfile = <>;
my $count = 0; #要讀取的行數，初始值為0
printf "I have opened this file: %sn", $filename;
while($count < @myfile){ #遍歷
print ("$myfile[$count]n"); #注意此種寫法.
$count++;
}
close(MYFILE);
}
else{
print "I can't open this file!";
}
exit;
3. 寫入文件
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#! c:/perl/bin/perl -w
use utf8;
use strict;
use warnings;
my $filename = 'test.txt';
if(open(MYFILE,">>".$filename)) #此種寫發，添加不刪除
{ #此種寫法，重寫文件內容 MYFILE,">".$filename
print MYFILE "Write File appending Testn";
close(MYFILE);
}
else{
print "I can't open this file!";
}
exit;
