You get this warning when timezone is not set (which is the default): PHP Warning: mktime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EDT/-4.0/DST' instead in test.php on line 8 To get rid of the warning message, set timezone in php.ini : ;;;;;;;;;;;;;;;;;;; ; Module Settings ; ;;;;...

This note relates to Python 2.x. A Python class is old-style by default, unless it has another new style class or the "top level" class object as its parent. The sure way to tell that an object is an instance of a new style class is to use the function type , type(x) returns <type 'instance'> for an old-style class, but it returns <class 'ClassType.X'> for a new-style class. Class definition: class A: # old style class def __init__(sel... Test session: >>> A <class ClassType.A at 0x7f36ae442fb0> ...

By default SELinux blocks execstack permission. According to Ulrich Drepper : "As the name suggests, this error is raised if a program tries to make its stack (or parts thereof) executable with an mprotect call. This should never, ever be necessary. Stack memory is not executable on most OSes these days and this won't change. Executable stack memory is one of the biggest security problems. An execstack error might in fact be most likely raised by malicious code." You can check if a library/application requires execstack by using the execstack utility: execstack -q PATHTOPROGRAM You can try to clean the flag and see if the application still runs: execstack -c PATHTOPROGRAM To allow execstack for cc1 : # grep cc1 /var/log/audit/audit.log | audit2allow ...

android:sharedUserId (from Android doc): The name of a Linux user ID that will be shared with other applications. By default, Android assigns each application its own unique user ID. However, if this attribute is set to the same value for two or more applications, they will all share the same ID — provided that they are also signed by the same certificate. Application with the same user ID can access each other's data and, if desired, run in the same process. Declare sharedUserId in AndroidManifest.xml : <manifest xmlns:android="http://schemas.android.co... Retrieve sharedUserId programmatically: import android.content.pm.PackageManager; impor...

There are two methods to create a temporary file in Java: File.createTempFile(String prefix, String suffix) : Creates an empty file in the default temporary-file directory, using the given prefix and suffix to generate its name. The default temporary-file directory is specified by the system property java.io.tmpdir . File.createTempFile(String prefix, String suffix, File directory) Creates a new empty file in the specified directory, using the given prefix and suffix strings to generate its name. If no exception is thrown, then: The file denoted by the returned abstract pathname did not exist before this method was invoked, and Neither this method nor any of its variants will return the same abstract pathname again in the current invocation of the virtual machine. Call File.deleteOnExit() to arrange for the...

When developing in PHP, it's frustrating to have errors in the code but no error message displays. According to the PHP manual, the display_errors setting controls whether errors are displayed. You can either change it in php.ini : ; This directive controls whether or not and where... or set it in your code: <?php ini_set('display_errors', 'On'); fsdlf... But when you have syntax errors in your code, the ini_set function may not even get a chance to execute. So the only reliable way is to set it in php.ini : <?php // nothing gets displayed when display_er...

The default layout manager for java.awt.Window is BorderLayout . The default layout manager for java.awt.Frame is BorderLayout . The default layout manager for java.awt.Dialog is BorderLayout . The default layout manager for java.awt.Panel is FlowLayout .

Specify "UTF-8" as charsetName to the constructor of InputStreamReader . From JavaDoc: An InputStreamReader is a bridge from byte streams to character streams: It reads bytes and decodes them into characters using a specified charset. The charset that it uses may be specified by name or may be given explicitly, or the platform's default charset may be accepted. BufferedReader r = new BufferedReader( new I...

The Java servlet API does not provide a getStatus method for HttpServletResponse until version 3.0. This is a wrapper that provides getStatus for servlet API 2.5 and older. You have to override 4 methods because sendError etc. does not call setStatus . import javax.servlet.*; import javax.servlet.ht... You can plug it in a servlet filter like this: public void doFilter(ServletRequest req, ...

To configure Tomcat HTTP Basic Authentication with SSL: Configure web app for basic authentication (add these in web.xml ): <security-constraint> <web-resource-collec... Three elements are needed for this to work: security-constraint with the url-pattern to protect, login-config for the type of authentication method to use, and security-role for the role name(s) used in the security-constraint . Add login info to conf/tomcat-users.xml : <tomcat-users> <role rolename="testUserRole... Turn on SSL in conf/server.xml : <Connector port="8443" protocol="HTTP/1.1" SSLEnab... For default keystore file ${user.home}/.keystore , the keystoreFile attribute can be omitted. Otherwise, add keystoreFile="/path/to/keystore/file" . The setup is different if you are using APR .