Perl對(duì)文件的操作,跟其它的語(yǔ)言類(lèi)似,無(wú)非也就是打開(kāi),讀與寫(xiě)的操作。
1. 打開(kāi)文件
#! c:/perl/bin/perl -w use utf8; use strict; use warnings; my $filename = 'test.txt'; # 或者用絕對(duì)路徑,如: c:/perl/Learn/test.txt if(open(MYFILE,$filename)) # MYFILE是一個(gè)標(biāo)志 { printf "Can open this file:%s!", $filename; close(MYFILE); } else{ print "Can't open this file!"; }
2. 讀取文件
#! 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(shù),初始值為0 printf "I have opened this file: %s\n", $filename; while($count @myfile){ #遍歷 print ("$myfile[$count]\n"); #注意此種寫(xiě)法. $count++; } close(MYFILE); } else{ print "I can't open this file!"; } exit;
3. 寫(xiě)入文件
#! c:/perl/bin/perl -w use utf8; use strict; use warnings; my $filename = 'test.txt'; if(open(MYFILE,">>".$filename)) #此種寫(xiě)發(fā),添加不刪除 { #此種寫(xiě)法,重寫(xiě)文件內(nèi)容 MYFILE,">".$filename print MYFILE "Write File appending Test\n"; close(MYFILE); } else{ print "I can't open this file!"; } exit;
標(biāo)簽:淮安 周口 周口 綿陽(yáng) 綏化 百色 秦皇島 合肥
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