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The way to check a HDFS directory's size?
I know du -sh in common Linux filesystems. But how to do that with HDFS?
10 Answers
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How can I check if a URL exists via PHP?
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Here:
$file = 'http://www.example.com/somefile.jpg';
$file_headers = @get_headers($file);
if(!$file_headers || $file_headers[0] == 'HTTP/1.1 404 Not Found') {
$exists = false;
}
else {
$exists = true;
}
From here and right ...
Facebook API - How do I get a Facebook user's profile image through the Facebook API (without requir
I'm working on a CMS that fetches a user's profile image from their Facebook URL (that is, http://facebook.com/users_unique_url ). How can I accomplish this? Is there a Faceboook API call that fetches a user's profile image URL without the user needing to Allow the application?
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How to view UTF-8 Characters in VIM or Gvim
...cument using:
:e! ++enc=utf8
If that works you should maybe change the fileencodings settings in your .vimrc.
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How to configure Ruby on Rails with no database?
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Uncomment this line in the environment.rb file:
config.frameworks -= [ :active_record, :active_resource, :action_mailer]
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adb not finding my device / phone (MacOS X)
...ding it with a hint. This can be done by putting the hex Vendor ID in the file ~/.android/adb_usb.ini
But first you have to find the Vendor ID value. Fortunately on Mac this is pretty easy. Launch the System Information application. It is located in the /Applications/Utilities/ folder, or you c...
When is it acceptable to call GC.Collect?
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I use GC.Collect only when writing crude performance/profiler test rigs; i.e. I have two (or more) blocks of code to test - something like:
GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced);
TestA(); // may allocate lots of transient objects
GC.Collect(GC.MaxGeneration, GCCol...
Uninstall / remove a Homebrew package including all its dependencies
...ppears that currently, there's no easy way to accomplish this.
However, I filed an issue on Homebrew's GitHub page, and somebody suggested a temporary solution until they add an exclusive command to solve this.
There's an external command called brew leaves which prints all packages that are not d...
AI助手生成代码编译apk报错 - AI 助手 - 清泛IT社区，为创新赋能！
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'resources.arsc' (not compressed)
Generated 437 files
Included 0 files from jar/zip files.
Checking for deleted files
Done!
[36m[[35mGenerateClasses[0m[36m] INFO: Source File: D:\ChineseAppInventor\resources\app.asar.unpacked\tmp\1781178417950_5762785332878730240-0\you...
How to check for DLL dependency?
... Studio tools (VC\bin folder) can help here:
dumpbin /dependents your_dll_file.dll
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