如何使用rex创建目录

Question

如果rex不存在，我想用它创建一个目录。我读过这，但我找不到该怎么做。

如果在没有目录的情况下发送文件，则会得到以下错误：

ERROR - upload: /usr/local/path/file.ext is not writable

有什么暗示吗？

Answer 1

我认为rex书中的文档有点老了。

请看这里的https://www.rexify.org/docs/api/或(截至今天)这里的最新文档：https://www.rexify.org/docs/api/1.4/rex/commands/file.pm.html#file-file_名字-选项- (它说的是1.4版，而当前的cpan版本是1.6，但没关系)

所以，用一个例子来回答你的问题：

task "backuptask", group => "mygroup", sub { 
    #
    # 1.) define the Backup Dir (you could do it without this step)                                                                                                                        
    my $backupdir = "/tmp/backup";  
    #                                                                                                      
    # 2.) "ensure" that the file is a (existing) "directory"        
    file $backupdir, 
            ensure=> "directory", 
            owner => "myowner", 
            group => "mygroup", 
            mode => 700, 
            on_change => sub { say "File was changed";};

    #                                                                                                                                    
    # 3.) define Backup File                                                                                                                         
    my $currTimestamp = strftime('%y%m%d',localtime);                                                                                     
    my $backupfile = "$backupdir/somebackup$currTimestamp";
    #                                                                            
    # 4.) "ensure" the the file is "present" at the defined path
    file $backupfile, ensure=> "present";

    ...execute something here...

}  ;