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proper way to sudo over ssh
...do --prompt="" -S -- whoami << EOF
> <remote_sudo_password>
root
We're telling sudo not to issue a prompt, and to take its input from stdin. This makes the sudo password passing completely silent so the only response you get back is the output from whoami.
This technique has the b...
App Inventor 2 图片云端保存及访问的App开发思路 · App Inventor 2 中文网
...”组件显示图片
详细步骤参考：《App Inventor 2 如何下载/保存网络图片？》
您的改进建议 联系方式： 不需要回复的可留空~ 意见反馈（300字以内）： 给个鼓励也...
How do I install a module globally using npm?
...ur program, using
require('whatever'), then install it
locally, at the root of your
project.
If you’re installing something that you want to use in your shell, on the
command line or something, install
it globally, so that its binaries
end up in your PATH environment
variable.
...
No Swipe Back when hiding Navigation Bar in UINavigationController
...
In my case, to prevent strange effects
Root view controller
override func viewDidLoad() {
super.viewDidLoad()
// Enable swipe back when no navigation bar
navigationController?.interactivePopGestureRecognizer?.delegate = self
}
func gestureRecogni...
ImportError: No module named pip
...mpted to install the nova client.
spencers-macbook-pro:python-novaclient root# python setup.py install
running install
/usr/bin/python: No module named pip
error: /usr/bin/python -m pip.__init__ install 'pbr>=0.5.21,<1.0' 'iso8601>=0.1.4' 'PrettyTable>=0.6,<0.8' 'requests>...
浅析为什么char类型的范围是 -128~+127 - C/C++ - 清泛网 - 专注C/C++及内核技术
...变为1 1000 0000 这样才能转化为
-128输出，不然1000 0000 如何输出？这当然是我的一种推断，具体怎么实现还得问CPU的设计者了。。。。
再看一个例子：
char a=-129;
printf("%d",a) ; 会输入多少？？ 结果为127 ，为...
Commit changes to a different branch than the currently checked out branch with subversion
...the directory where are the changes you want to branch. It must not be the root of the repository, less to duplicate in that way;
Select TortoiseSVN -> "Branch/tag...";
Set To URL: "svn://host/repository/FooBar/branches/FooBarBranchName";
Make sure [*] Working copy is selected. This will ensure t...
Are there any smart cases of runtime code modification?
......
Some OSs' security models mean self-modifying code can't run without root/admin privileges, making it impractical for general-purpose use.
From Wikipedia:
Application software running under an operating system with strict W^X security cannot execute instructions in pages it is allowed to ...
Running single test from unittest.TestCase via command line
...import sys
import unittest
test_pattern = 'mytest/module/name.py'
PACKAGE_ROOT_DIRECTORY = os.path.dirname( os.path.realpath( __file__ ) )
loader = unittest.TestLoader()
start_dir = os.path.join( PACKAGE_ROOT_DIRECTORY, 'testing' )
suite = loader.discover( start_dir, test_pattern )
runner = unitt...
Getting current directory in .NET web application
So I have a web project, and I'm trying to get the root directory of the website using the c# method Directory.GetCurrentDirectory() . I don't want to be using a static path as the file locations will be changing in the future. This method is running in my imageProcess.aspx.cs file, but where I t...