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Shell脚本编程30分钟入门 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...他们都是读入function.sh的内容并执行其内容（类似PHP里的include），为了更好的可移植性，推荐使用第二种写法。
包含一个文件和在执行一个文件一样，也要写这个文件的路径，不能光写文件名，比如上述例子中:
. ./function.sh
...
Is it possible for a computer to “learn” a regular expression by user-provided examples?
...ally matching anything in the list of positive examples (and nothing else, including any of the negative examples).
I suppose the real challenge would be to find the shortest regex that matches all of the examples, but even then, the user would have to provide very good inputs to make sure the resu...
How to save username and password with Mercurial?
...ing
>> sudo pip install mercurial_keyring
**Edit your .hgrc file to include the extension**
[extensions]
mercurial_keyring =
https://www.mercurial-scm.org/wiki/KeyringExtension
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imp...
Is AsyncTask really conceptually flawed or am I just missing something?
...
Probably we all, including Google, are misusing AsyncTask from the MVC point of view.
An Activity is a Controller, and the controller should not start operations that may outlive the View. That is, AsyncTasks should be used from Model, from ...
Add custom icons to font awesome
...our icon pack at both locations. But the CSS generated at IcoMoon will not include the woff2 format in your @font-face {} declaration. Make sure to add that when you're adding your CSS to your project:
@font-face {
font-family: 'customiconpackname';
src: url('../fonts/customiconpack.eot?lch...
How to split one string into multiple strings separated by at least one space in bash shell?
...to $'ANSI-ESCAPED-STRING' get used to it; it's a timesaver.
If you do not include -r (like in read -a arr <<<"$var") then read does backslash escapes. This is left as exercise for the reader.
For the second question:
To test for something in a string I usually stick to case, as this ca...
What is the difference between a thread and a fiber?
...e blocking I/O in a fiber, the entire kernel thread it is a part of blocks including all the fibers that are part of that kernel thread.
In section 11.4 "Processes and Threads in Windows Vista" in Modern Operating Systems, Tanenbaum comments:
Although fibers are cooperatively scheduled, if the...
What is the point of a private pure virtual function?
...n in main() to better demonstrate the intent of design pattern in use.):
#include <iostream>
class Engine
{
public:
void SetState( int var, bool val )
{
SetStateBool( var, val );
}
void SetState( int var, int val )
{
SetStateInt( var, val );
}
private:
virtual void...
How to prevent XSS with HTML/PHP?
...t takes input from a user and outputs it directly on a web page. If input includes HTML or JavaScript, remote code can be executed when this content is rendered by the web client.
For example, if a 3rd party side contains a JavaScript file:
// http://example.com/runme.js
document.write("I'm runni...
Actual meaning of 'shell=True' in subprocess
...k services which performed subprogram invocations via the shell. Examples include the various sendmail backdoors involving ILS.
In summary, use shell=False.
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