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What is the purpose of the : (colon) GNU Bash builtin?
...and that does nothing, being little more than a comment leader, but is actually a shell builtin in and of itself?
12 Answer...
廉价共享存储解决方案1-drbd+ha+nfs - 更多技术 - 清泛网 - 专注C/C++及内核技术
...anager off
2.2.4 hosts 文件配置
vi /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
172.16.20.42 share1
172.16.20.43 share2
172.16.20.44 share3
10.10.10.42 share1-drbd
...
Download file of any type in Asp.Net MVC using FileResult?
I've had it suggested to me that I should use FileResult to allow users to download files from my Asp.Net MVC application. But the only examples of this I can find always has to do with image files (specifying content type image/jpeg).
...
How does one get started with procedural generation?
Procedural generation has been brought into the spotlight recently (by Spore, MMOs, etc), and it seems like an interesting/powerful programming technique.
My questions are these:
...
Correct way to add external jars (lib/*.jar) to an IntelliJ IDEA project
...
Steps for adding external jars in IntelliJ IDEA:
Click File from the toolbar
Select Project Structure option (CTRL + SHIFT + ALT + S on Windows/Linux, ⌘ + ; on Mac OS X)
Select Modules at the left panel
Select Dependencies tab
Select + icon
Sele...
How can I refresh a page with jQuery?
...tion() {
location.reload();
});
The reload() function takes an optional parameter that can be set to true to force a reload from the server rather than the cache. The parameter defaults to false, so by default the page may reload from the browser's cache.
...
How to generate a simple popup using jQuery
...r:default;
display:none;
margin-top: 15px;
position:absolute;
text-align:left;
width:394px;
z-index:50;
padding: 25px 25px 20px;
}
label {
display: block;
margin-bottom: 3px;
padding-left: 15px;
text-indent: -15px;
}
.messagepop p, .messagepop.div {
border-bottom: 1px solid...
How to determine the version of the C++ standard used by the compiler?
...
By my knowledge there is no overall way to do this. If you look at the headers of cross platform/multiple compiler supporting libraries you'll always find a lot of defines that use compiler specific constructs to determine such things:
/*Define Microsoft V...
How to add url parameters to Django template url tag?
...ontext? e.g. {% url target_link target_kwargs %} it would be like the equivalent of passing **kwargs to a function. I have a use case where target_link is variable and therefore number of kwargs in url is not know
– teebagz
Nov 6 '19 at 16:30
...
Detect home button press in android
...ilter;
import android.util.Log;
public class HomeWatcher {
static final String TAG = "hg";
private Context mContext;
private IntentFilter mFilter;
private OnHomePressedListener mListener;
private InnerReceiver mReceiver;
public HomeWatcher(Context context) {
mConte...