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Created by voodoo on March 24, 2013 13:44:47
Last update: March 29, 2013 13:08:31
Use getpwnam group of functions. Example code:
#include <sys/types.h>
#include <pwd.h>
#inc...
For gid, use getgrnam
Created by magnum on October 22, 2012 19:48:03
Last update: October 22, 2012 19:48:03
execl takes the full path name of the command and variable length of arguments terminated by NULL:
execl("/bin/ls", "/bin/ls", "-r", "-t", "-l", NULL...
where the second argument is argv[0] , but can be any string!
execlp will try to find the command from $PATH , so full path to command is not needed:
execl("ls", "ls", "-r", "-t", "-l", NULL);
execv is the equivalent of execl , except that the arguments are passed in as a NULL terminated array:
char *args[] = {"/bin/ls", "-r", "-t", "-l", NULL ...
execvp is the equivalent of execvl , excep that the arguments are passed in as a NULL terminated array:
char *args[] = {"ls", "-r", "-t", "-l", NULL };
...
Created by voodoo on January 03, 2012 08:41:21
Last update: February 16, 2012 15:50:06
This is the command to print all regular files in the src folder but excluding all files within the .svn folders:
$ find src -name .svn -prune -o -type f -print
where -o is the or operator.
Define a shortcut:
ff ()
{
find $1 -name .svn -prune -o -...
Created by James on January 16, 2012 10:05:10
Last update: January 16, 2012 10:06:13
There are two ways to get the submit button:
Use the :submit selector (note the space between the form name and :submit ):
$('#the-form-id :submit')
Use attribute selector (also, space between form id and attribute selector):
$('#the-form-id [type="submit"] ')
// or
$(...
jQuery recommends the latter if you are concerned about performance:
Because :submit is a jQuery extension and not part of the CSS specification, queries using :submit cannot take advantage of the performance boost provided by the native DOM querySelectorAll() method. For better performance in modern browsers, use [type="submit"] instead.
Created by Fang on December 06, 2011 19:03:25
Last update: December 07, 2011 08:54:11
Our custom tag, as implemented in the previous note , is broken when a template is used.
Create a template file ( home-template.xhtml ):
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Stric...
and a test page that uses it ( home.xhtml ):
<?xml version="1.0" encoding="UTF-8"?>
<ui:comp...
Then request the page with URL: http://localhost:8080/facelet-demo/home.jsf?name=Jack .
You'll find that our hello tag works inside ui:repeat but fails to get the value defined by ui:param ! What's the problem? Our hello tag implementation evaluated the EL with the wrong EL context!
This is the corrected implementation:
package com.example;
import java.io.IOExcep...
Created by voodoo on November 22, 2011 12:27:12
Last update: November 22, 2011 12:31:50
Unix hidden files are named starting with a dot ".".
To find hidden files in the current directory:
$ find . -type f -name '.*'
or
$ find . -type f | grep \\/\\.
To find hidden files in the marketing directory:
$ find marketing -type f -name '.*'
or
$ find marketing -type f | grep \\/\\.
Created by Dr. Xi on November 11, 2011 10:05:22
Last update: November 11, 2011 10:12:01
This is an HTML image tag filter using Java regex. It takes a string, finds the img tags, replaces the src attribute with one provided by the filter, then adds a class name to the class attribute.
import java.util.regex.*;
import java.io.*;
...
Test file:
<div id="HTML snippet">
<img src="img/big/txt-m...
Created by Fang on October 30, 2011 20:35:17
Last update: October 30, 2011 20:37:03
This note lists some of the different behaviors I found using different JSF implementations. In the simple JSF facelet example, I used Sun's reference implementation version 2.0.0-RC:
<dependency> <groupId>javax.faces</gro... With this version, the DOCTYPE declaration is dropped when the page is rendered. It doesn't matter what DOCTYPE you declare in your templates, the facelet engine simply drops it. The problem with this is, your page is always displayed in quirks mode , despite your intentions to require standards compliant mode. The DOCTYPE problem is fixed in release 2.0.2-FCS . Change the dependency in pom.xml to: <dependency> <groupId>javax.faces</gro... and test again, you'll find that DOCTYPE is faithfully passed over to the browser (view source at browser). You can delete the DOCTYPE declaration in the xhtml template...
Created by Fang on October 30, 2011 19:19:33
Last update: October 30, 2011 19:21:11
I've seen both
<context-param>
<param-name>javax.faces.PRO...
and
<context-param>
<param-name>facelets.DEVE...
in web.xml .
But I cannot find any documentation of facelets.DEVELOPMENT in the JSF 2 spec. I cannot find any code referencing facelets.DEVELOPMENT in mojarra-2.1.3-FCS (the reference JSF implementation) either. So my guess is facelets.DEVELOPMENT is a thing of the past .
About javax.faces.PROJECT_STAGE , this is what's documented in the JSF 2 spec:
javax.faces.PROJECT_STAGE - A human readable string describing where this particular JSF application is in the software development lifecycle.
Valid values are “ Development ”, “ UnitTest ”, “ SystemTest ”, or “ Production ”, corresponding to the enum constants of the class javax.faces.application.ProjectStage .
It is also possible to set this value via JNDI. See the javadocs for Application.getProjectStage() .
Created by freyo on May 13, 2011 15:45:29
Last update: September 20, 2011 08:08:12
This is an Android app that dumps any binarized xml file as plain text - to the sdcard on the device or emulator.
build.xml :
<?xml version="1.0" encoding="UTF-8"?>
<project...
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<man...
res/layout/main.xml
<?xml version="1.0" encoding="utf-8"?>
<Lin...
res/values/strings.xml :
<?xml version="1.0" encoding="utf-8"?>
<res...
src/com/android/xmltool/DumpXml.java
package com.android.xmltool;
import java.ut...
Screenshot
Pre-built APK can be downloaded from: http://code.google.com/p/android-binxml-dump/
