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Check if passed argument is file or directory in Bash
I'm trying to write an extremely simple script in Ubuntu which would allow me to pass it either a filename or a directory, and be able to do something specific when it's a file, and something else when it's a directory. The problem I'm having is when the directory name, or probably files too, has s...
Print array to a file
... or set print_r to return the output instead of printing it.
Example from PHP manual
$b = array (
'm' => 'monkey',
'foo' => 'bar',
'x' => array ('x', 'y', 'z'));
$results = print_r($b, true); // $results now contains output from print_r
You can then save $results with fil...
What browsers support HTML5 WebSocket API?
...
XSockets.NET
SuperWebSocket
Nugget
Alchemy-Websockets
Fleck
SignalR
In PHP:
Ratchet
phpwebsocket.
Extendible Web Socket Server
phpdaemon
In Python:
pywebsockets
websockify
gevent-websocket, gevent-socketio and flask-sockets based on the former
Autobahn
Tornado
In C:
libwebsockets
In ...
What do 'real', 'user' and 'sys' mean in the output of time(1)?
... time; User and Sys refer to CPU time used only by the process.
Real is wall clock time - time from start to finish of the call. This is all elapsed time including time slices used by other processes and time the process spends blocked (for example if it is waiting for I/O to complete).
User is t...
Apache VirtualHost 403 Forbidden
...ache. You can see the enabling of the feature with the directive
Require all denied
This basically says to deny access to all users. To fix this problem, either remove the denied directive (or much better) add the following directive to the directories you want to grant access to:
Require all ...
深入理解 x86/x64 的中断体系 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...模式执行。只要构建环境要素正确这样切换执行当然是没问题的。
这个执行环境要素需要注意的是：当使用 16-bit gate 时，也要相应使用 16-bit code segment descriptor。也就是在 gate descriptor 中的 selector 要使用 16-bit code segment selector。...
Why JSF calls getters multiple times
...e getter method behind the expression is executed everytime when the code calls ValueExpression#getValue().
This will normally be invoked one or two times per JSF request-response cycle, depending on whether the component is an input or output component (learn it here). However, this count can get ...
How to specify Composer install path?
...
That works well -- so they still have a repository after all :)
– Tower
Aug 9 '12 at 13:07
3
...
What is the difference between require and require-dev sections in composer.json?
...
Different Environments
Typically, software will run in different environments:
development
testing
staging
production
Different Dependencies in Different Environments
The dependencies which are declared in the require section of composer.json are t...
Maximum length of the textual representation of an IPv6 address?
I want to store the data returned by $_SERVER["REMOTE_ADDR"] in PHP into a DB field, pretty simple task, really. The problem is that I can't find any proper information about the maximum length of the textual representation of an IPv6 address, which is what a webserver provides through $_SERVER...