copy

问题 What is the best way to move/copy file while maintaining all its attributes (Date created, Date, etc)? Thank you 回答1: If you are using Java 7, use java.nio.file.Files.copy(Path source, Path target, CopyOption... options) Use the COPY_ATTRIBUTES option to maintain the last modified time: COPY_ATTRIBUTES Attempts to copy the file attributes associated with this file to the target file. The exact file attributes that are copied is platform and file system dependent and therefore unspecified.

问题 I've got dictionary stored in NSUserDefaults and I need to add/remove items in this dictionary. It bothers me that to do this I have to create mutable copy of entire dictionary, change one element and replace entire dictionary with new copy. copy = [[defaults objectForKey:@"foo"] mutableCopy]; [copy setObject:… forKey:@"bar"]; [defaults setObject:copy forKey:@"foo"]; and it involves even more copying and re-setting for objects deeper in the hierarchy. Is there a better way? I've tried to use

问题 I'm building an app using multiple dockerfiles (one for each service). My app's directory structure is as follows: app ├── dockerfiles │ ├── webserver │ │ └── Dockerfile │ └── database │ └── Dockerfile ├── public └── <frontend> ├── db └── <data> [...] ├── LICENSE ├── README.md └── docker-compose.yml In my webserver's Dockerfile , I want to copy in my existing code using the COPY command: # Dockerfile COPY ./public /var/www/html And I want to deploy the app using my docker-compose.yml file: #

问题 My goal is to create a .pkg that will simply instruct the Mac Installer to simply install files, like fonts, from the .pkg to a directory when run. I've tried using Xcode, but it seems more application oriented. How do I configure Xcode with a generic document so I can Build and Archive, then Share using the Organizer to create the .pkg? The Copy Files Target appears to be in use only at build time, so that doesn't seem to be much help. 回答1: You should use the PackageMaker application, not

问题 I would like to write/use an open source script that can access iOS filesystem (non-jailbroken). On a Jailbroken device, i use ssh / scp to access, transfer data from the device. Intent is to copy some part of the iOS filesystem (say /var/mobile/Applications/xxx-xxxx/Documents ) to a Mac, from a non-Jailbroken device , using some script . I see that tools like iFunBox is able to do it. Would like to know it manages to do so. I came across mobiledevice.h but could not really understand how to

问题 I want to copy a certain file to a location, irrespective of that file already exists in the destination or not. I'm trying to copy through shell script.But the file is not getting copied. I'm using the following command /bin/cp -rf /source/file /destination but that doesn't work. 回答1: This question has been already discussed, however you can write a little script like this: #!/bin/bash if [ ! -d "$2" ]; then mkdir -p "$2" fi cp -R "$1" "$2" 回答2: Your problem might be caused by an alias for

问题 I have a menubutton, which when clicked should display a menu containing a specific sequence of strings. Exactly what strings are in that sequence, we do not know until runtime, so the menu that pops up must be generated at that moment. Here's what I have: class para_frame(Frame): def __init__(self, para=None, *args, **kwargs): # ... # menu button for adding tags that already exist in other para's self.add_tag_mb = Menubutton(self, text='Add tags...') # this menu needs to re-create itself

问题 Yesterday I had a chat with a taxi driver and upon mentioning that I am a programmer, he told me that a couple of days earlier he had experienced the following: upon trying to copy the URL from the address bar of his browser, a messagebox appeared with a message like "Please don't copy this link, rather register" . I am not a web developer, so this might be a lame question :-) but I wonder how such a thing is accomplished? What technology or language gives one this level of control over the

问题 I have a huge directory structure of movie files. For analysis of that structure I want to copy the entire directory structure, i.e. folders and files however I don't want to copy all the movie files while I want to keep there file names. Ideally I get zero-byte files with the original movie file name. I tried to and then rsync to my remote machine which didn't fetch the link files. Any ideas how to do that w/o writing scripts? 回答1: You can use find: find src/ -type d -exec mkdir -p dest/{} \

问题 This is the scenario: I have a MySQL server with a database, let's call it consolidateddb . This database a consolidation of several tables from various databases I have another MySQL server, with the original databases, these databases are production databases and are updates daily. The company wants to copy each update/insert/delete on each table in the production databases to the corresponding tables in consolidateddb . Would replication accomplish that? I know that replication is done on