模块 笔记

1.File::Basename  确定文件或目录基本名(basename)
#!/usr/bin/perl -w
use File::Basename;
my $name="/home/user1/module/File_module/file_module.pl";
my $basename=basename $name;
print "$basename\n";

执行结果：
file_module.pl
如果
my $name="/home/user1/module/File_module";
执行结果：
File_module

2.File::Basename::dirname　显示目录结构

#!/usr/bin/perl -w
use File::Basename;
my $name="/home/user1/module/File_module/file_module.pl";
my $basename=File::Basename::dirname $name;
print "$basename\n";


my $basename=dirname $name;　　＝＝　my $basename=File::Basename::dirname $name;
结果：
/home/user1/module/File_module

３.
#!/usr/bin/perl -w
use File::Basename;
use File::Spec;

my $old_name="/home/user1/module/File_module/file_module.pl";

my $dirname=dirname $old_name;
my $basename=basename $old_name;

#$basename=~s/^/not/;
my $newname=File::Spec->catfile($dirname,$basename);
print "$newname\n";

结果:
/home/user1/module/File_module/file_module.pl

4.File::Find 找文件等于basename.pl　目录文件路径

#!/usr/bin/perl
use strict;
use File::Find;

sub wanted {
        if ($_ eq "basename.pl") {
                print "$File::Find::name\n";
        }
}

find \&wanted,"/home/module";

结果：
/home/user/module/File_module/basename.pl


#!/usr/bin/perl -w

use File::Find;

sub wanted {
    if (-f $File::Find::name) {

        if ($File::Find::name=~/\.txt/i) {
            print "Removing $File::Find::name\n";
            unlink $File::Find::name;
                    }
        }
}

find (\&wanted,'/home/user/module');