Usually network connectivity can be tested with ping and telnet . Android adb shell has ping but no telnet . But it has nc , which can be used in place of telnet . # nc -z -v www.google.com 80 DNS fwd/rev mismat...

This is a list of built-in Android permission values: Permission Description Since API Level android.permission.ACCESS_CHECKIN_PROPERTIES Allows read/write access to the "properties" table in the checkin database, to change values that get uploaded. 1 android.permission.ACCESS_COARSE_LOCATION Allows an application to access coarse (e.g., Cell-ID, WiFi) location 1 android.permission.ACCESS_FINE_LOCATION Allows an application to access fine (e.g., GPS) location 1 android.permission.ACCESS_LOCATION_EXTRA_COMMANDS Allows an application to access extra location provider commands 1 android.permission.ACCESS_MOCK_LOCATION Allows an application to create mock location providers for testing 1 android.permission.ACCESS_NETWORK_STATE Allows applications to access information about networks 1 android.permission.ACCESS_SURFACE_FLINGER Allows an application to use SurfaceFlinger's low level features 1 android.permission.ACCESS_WIFI_STATE Allows applications to access information about Wi-Fi networks 1 android.permission.ACCOUNT_MANAGER Allows applications to call into AccountAuthenticators. Only the system can get this permission. 5 android.permission.AUTHENTICATE_ACCOUNTS...

Some peculiarities about Java PrintWriter: PrintWriter never throws any exceptions. From JavaDoc : Methods in this class never throw I/O exceptions, although some of its constructors may. The client may inquire as to whether any errors have occurred by invoking checkError(). When error occurs, you'll never know anything more than that it occured, because checkError returns boolean. When a character is out of the range of the character encoding of the PrintWriter, it prints a question mark (?). But this is not an error. Test code: import java.io.*; public class TestPrintWri... Latin1 test result: java TestPrintWriter iso-8859-1 | od -bc 000000... UTF-8 test result: java TestPrintWriter utf-8 | od -bc 0000000 141... Also, the constructor throws a FileNotFoundException when you try to write to a...

Characters \/:*?"<>| are forbidden in Windows file names. For Python, the effect of using a forbidden character in the file name is undetermined. In the following session a file named mytest can be seen from the Windows Explorer, which contains 0 bytes - as confirmed by the read back in the session. But if you open the file with the invalid file name used to create the file (i.e., mytest: 1.txt ), you get the original contents. C:\>python Python 2.7 (r27:82525, Jul 4 2010, ...

More foes running Android emulator on 64-bit Fedora. Got warning "opening audio output failed". Added -debug audio flag to diagnose problem. $ tools/emulator -debug audio @Simple8 emulator...

The tags <c:if> The <c:if> tag may be used with or without body content: <!-- Without body content, used to export vari... In my opinion, the version without body content is pretty much useless (the <c:set> tag is a lot more meaningful for this purpose). If body content exists, it is inserted into the page if the testCondition is true . Optional attributes var and scope may be specified. If var is specified, a variable whose name is the value of var is exported to the associated scope ( pageScope if no scope is specified). The type of the exported variable is Boolean and its value is the value of the testCondition . <c:choose>, <c:when>, <c:otherwise> These tags imitate the Java control structure if...else...

If you don't want to open an extra port for VNC or want extra security with SSH, you can setup an SSH tunnel for VNC. On Windows, you can do this with Putty or openssh . Open a command window, and enter (using Putty as example): C:\local\bin\plink.exe -ssh -2 -L localhost:5901:r... When connecting with vncviewer , use localhost:5901 as server instead of remote_host:5901 . If you use the setup frequently, it is more convenient to setup the tunnel as a Windows service . Assuming the name of the service is vnc_tunnel , the registry entry would look like: Windows Registry Editor Version 5.00 [HKEY_...

Editing Shortcut Meaning Ctrl+C Copy Ctrl+V Paste Ctrl+X Cut Ctrl+Z Undo Ctrl+F Find Ctrl+G Find Again Viewing Shortcut Meaning Esc Stop Ctrl+R Reload Mozilla/NS: Ctrl+Shift+R, IE: Ctrl-F5 Force reload (not from cache) Home Go to top of page End Go to end of page Page Up Scroll up one page Page Down Scroll down one page Ctrl+- (minus sign) Make fonts smaller Ctrl++ (plus sign) Make fonts bigger Ctrl+0 Restore default font size Tools Shortcut Meaning Alt Toggle menu bar (IE7 only) Ctrl+T Open new tab Ctrl+N Open new window Ctrl+P Print Ctrl+I, Ctrl+B Bookmarks Ctrl+H History Ctrl+U View page source Ctrl+W Close Window or tab if more than one tab is open Ctrl+L Go to location box Ctrl+E Go to search box

Configuration Bring up the System Properties dialog and click the System Restore tab. Usage Bring up the System Restore tool from the Accessories -> System Tools -> System Restore menu. Cleanup Open disk properties (right click on the drive, select properties), in the general tab click Disk Cleanup , click the More Options tab to clean up space used by System Restore . Reference Windows XP System Restore Is Easy to Use

A first attempt would be to create an input file like this: userid password shell_command1 shell_... and feed the lines to the telnet client: cat telnet_input.txt | telnet remote_host #... However, you'll learn soon enough that it doesn't work. You get output like this: Trying 192.168.159.128... Connected to bash... What's happening? The telnet client depleted all input before the remote host had a chance to respond. Since there's no more input, the telnet client initiated to close the connection. Adding a delay between the commands makes it work: (echo userid sleep 10 echo password ... How much time to sleep between commands is just guesswork. You can use Expect to provide more control over the automated session: #!/usr/bin/expect # timeout script aft......

Provided that table T1 is created with: CREATE TABLE T1 ( c1 INTEGER, c2 INT... This is a simple PL/SQL program that inserts a new rows with the columns reversed: DECLARE /* Output variables to hold the res...

IE and firefox both support client side XSLT. This can be done by inserting an xml-stylesheet into the XML file, which would trigger the browser to apply the XSL to the XML document and generate a transformed page: <?xml version="1.0" encoding="utf-8" ?> <?... Or, it can be done more dynamically with client side JavaScript. However, IE and FF offer different APIs for XSLT. Below is my attempt to bridge the differences. It's been tested to work for IE 7.0, FF 2.0 and Opera 9.0.2. function XSLT(url) { var xslt = false; ... The following HTML page shows how to use it: <HTML> <HEAD> <SCRIPT language="JavaS...