My Tech Blog

My New Tech Blog

2009-07-09T08:37:00.000-07:00

Hi

i have migrated my tech blog to www.techkaki.com

I have update all the latest post to www.techkaki.com

Feel free, just drop by my new blog and leave comment la.

The Internet Explorer icon is missing from your desktop

2009-05-12T19:27:00.000-07:00

The Internet Explorer icon might be missing after either you upgrade the Internet Explorer version to 7, or installed through Windows updates.When you try to use the Desktop Items dialog box in Windows XP or the Desktop Icon Settings dialog box in Windows Vista to add the Internet Explorer icon, there is no Internet Explorer check box.

To resolve the issue, follow these steps:

Click Start>Run Type regedit click ok

Navigate to the following registry key from left pane

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\NewStartPanel]

double-click {871C5380-42A0-1069-A2EA-08002B30309D} key (if exist)

if not exist, add new registry key {871C5380-42A0-1069-A2EA-08002B30309D}

Enter dword value as 0 to enable the Internet Explorer icon on the Desktop.right click on desktop and click “Refresh”.

References

Network Places: {208D2C60-3AEA-1069-A2D7-08002B30309D}
My Computer: {20D04FE0-3AEA-1069-A2D8-08002B30309D}
My Documents: {450D8FBA-AD25-11D0-98A8-0800361B1103}
Internet Explorer: {871C5380-42A0-1069-A2EA-08002B30309D}
Recycle Bin: {645FF040-5081-101B-9F08-00AA002F954E}

I hope this post will help urs :-)

How to set time and date using unix command

2009-05-07T23:55:00.000-07:00

date
Date displays the date and time of the system, used by root it can also be used to change the date and time of the system.

If you just enter:

date

You will get the date of the system, like this;

Fri May 18 19:36:53 MYT 2009

You can set the date by using root user:

Usage:

date nnddhhmm[[cc]yy][.ss]

Note:

nn = month of the year (01 to 12)
dd = day of the month (01 to 31)
hh = hour of the day (00 to 23)
mm = minute of the hour (00 to 59>
cc = The first to digits of the year
yy = The last two digits of the year
.ss = The seconds

Example:

date --set 06:00 ;sets the time to 6:00AM

OR

hwclock

hwclock is a tool for accessing the Hardware Clock. You can display the current time, set the Hardware Clock to a specified time, set the Hardware Clock to the System Time, and set the System Time from the Hardware Clock.

SYNOPSIS

hwclock -r or hwclock --show
hwclock -w or hwclock --systohc
hwclock -s or hwclock --hctosys
hwclock -a or hwclock --adjust
hwclock -v or hwclock --version
hwclock --set --date=newdate
hwclock --getepoch
hwclock --setepoch --epoch=year

Example of change date and time.

hwclock --set --date='08/18/07 21:08:40' --localtime

How to add DNS address on Ubuntu

2009-05-07T02:01:00.000-07:00

If you want to make use of specific DNS, modify the following file /etc/resolv.conf

sudo vi /etc/resolv.conf

Add the following line to resolve.conf

nameserver xxx.xxx.xxx.xxx (xxx = DNS address)
nameserver xxx.xxx.xxx.xxx

How to change Ubuntu Server from DHCP to Static IP

2009-05-07T01:42:00.000-07:00

In Ubuntu, all the IP Address is store on /etc/network/interfaces file. So, i have to open this file by using vi to add the Static IP to this file.

Here are steps

1.
sudo vi /etc/network/interfaces

2.
auto eth0
iface eth0 inet dhcp

this 2 statement show that your Ubuntu server was in DHCP. Enter the following statement to set the IP Address

auto eth0
iface eth0 inet static
address 192.168.1.101
netmask 255.255.255.0
network 192.168.1.0
broadcast 192.168.1.255
gateway 192.168.1.1

after save it. You should able to use the IP address already.

"550 relay not permitted"

2009-05-06T19:59:00.000-07:00

I think your might facing error when u try to send email from a network other than that on which the smtp server resides. This is because most ISPs block this to prevent spam.

To solve this problem, please change setting of your Outlook account by clicking on More Settings > Outgoing Server and check the My outgoing server (SMTP) requires authentication.

To check whether your email provider supports authentication:

1. Start > Run > cmd
2. telnet smtp.yourservername.here 110
If successful, it should tell you you're connected.
3. ehlo smtp.yourservername.here
4. It will return a list. If you see something in the list that says AUTHENTICATION it supports it.

How to install AMP (Apache, PHP and MySQL)in centos

2009-04-26T19:25:00.000-07:00

I just learn to setup AMP on centos. Below are the steps

Download a copy of CentOS Linux and install it
Once your CentOS is installed. type yum install httpd to install apache web server
type yum install php to install PHP
Once PHP installed successfully, type yum install mysql-server mysql
Once everything finish, type service httpd start to start your apache web server, screen will show you if web server service successfully started
type service mysqld start to start your mysql server
Once both services is running, you can point your browser to http://localhost and you should see a welcome page from CentOS
To test php is running properly, go to /var/www/html and create an index.php file with the content below

Logon On As Different User In Linux In Same Terminal Window

2009-04-20T01:11:00.000-07:00

In Unix, how do I quickly changing users on Linux without having to logout while you are using bash or any other command line interface.

The su command

Using the su command we can quickly change users in a bash terminal for that type the following command;

su - username

To login as a root user

su -s

Windows XP could not start because the following file is missing or corrupt: \WINDOWS\SYSTEM32\CONFIG\SYSTEM

2009-04-19T23:17:00.001-07:00

I believed your might see this error message (Windows XP could not start because the following file is missing or corrupt: \WINDOWS\SYSTEM32\CONFIG\SYSTEM) before. This error occured because of corruption in the registry.

Below are the steps to recover a corrupted registry.

Solution 1:

Insert the Windows XP startup disk into the floppy disk drive, or insert the Windows XP CD-ROM into the CD-ROM drive, and then restart the computer.
When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
If you have a dual-boot or multiple-boot computer, select the installation that you want to access from the Recovery Console.
When you are prompted to do so, type the Administrator password. If the administrator password is blank, just press ENTER.
At the Recovery Console command prompt, type the following lines, pressing ENTER after you type each line:
make backups of the following files:-
c:\windows\system32\config\system (to c:\windows\tmp\system.bak)c:\windows\system32\config\software (to c:\windows\tmp\software.bak)
c:\windows\system32\config\sam (to c:\windows\tmp\sam.bak)
c:\windows\system32\config\security (to c:\windows\tmp\security.bak) c:\windows\system32\config\default (to c:\windows\tmp\default.bak)
delete the following files:-
delete c:\windows\system32\config\system
delete c:\windows\system32\config\software
delete c:\windows\system32\config\sam
delete c:\windows\system32\config\security
delete c:\windows\system32\config\default
Copy the files that you delete back to system32\config folder:-
copy c:\windows\repair\system c:\windows\system32\config\system
copy c:\windows\repair\software c:\windows\system32\config\software
copy c:\windows\repair\sam c:\windows\system32\config\sam
copy c:\windows\repair\security c:\windows\system32\config\security
copy c:\windows\repair\default c:\windows\system32\config\default
Type exit to quit Recovery Console. Your computer will restart.

Solution2:

Use chkdsk command to repair the error

boot from Windows XP CD
When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
type chkdsk/r
After repair, type exit
Restart your windows

I hope this 2 solution is work for you!!

What is Chkdsk in Windows XP

2009-04-19T23:06:00.000-07:00

In Windows XP, there is 1 powerful command-line tool called chkdsk (chkdsk.exe). It use to checks volumes for problems and will repair the problems related to bad sectors, lost clusters, cross-linked files, and directory errors. System crashes or freezes, power glitches, incorrectly turning off a computer can all cause corruption in the file or folder structure. Physically bumping or jarring a computer can cause the head that reads disks to hit the surface and damage sectors. Once some sort of error occurs it can propagate to create more errors so a regularly scheduled disk checkup is part of good system maintenance.

Note: To use Chkdsk, you must log on as an administrator or as a member of the Administrators group

How do I remove a full directory in Linux?

2009-04-16T02:37:00.000-07:00

To remove a directory that is full with other files and/or other directories, use the below command.

$ rm -rf directory

rmdir command can use to remove the empty DIRECTORY(ies)

$ rmdir directory

How to Add and Delete User with Command line on Windows XP

2009-04-15T19:01:00.000-07:00

In Windows Environment, we can simple add a new user account by go to Control Panel->User Account to add a new user account. But this can be done via Command Line.

Here are the steps:

go to Start->Run->type in cmd
To add a user to your computer, type in "net user username password /add " EXAMPLE: net user kakaka 12345 /add
To delete a user on your computer, go to start>run>type in cmd . A black screen will appear. Type in "net user username /del". EXAMPLE: net user kakaka /del . Once the user account successfully delete, an message "The command completed successfully" will be display.

How to Relaunch Finder on Mac

2009-04-15T18:46:00.000-07:00

Why we need to relaunch Finder? We need to relaunch Finder when our Mac Computer freezes. Below are the steps to show how to relaunch Finder.

Using Keyboard

Press Command + Option + esc. This will open "Force Quit".
Navigate to and choose "Finder".
Click Relaunch. In a few seconds, the dock/icons/apple menu will disappear. It will then quickly reappear and reload everything.

Using Mouse

Go to the Apple Menu. That is the Apple image on the top left.
Go to "Force Quit".
Choose "Finder" and click relaunch.

Windows XP Reboot Loop: Help!

2009-04-14T20:32:00.000-07:00

I think most of yours might experience as your windows pc continually reboots. It did not start sucessfully..." screen then goes to the Windows XP splash screen and reboot. It keeps on repeating this process.

How to solve this problem:

Press F8 at bootup and select "Last Known Good Configuration" then Enter. If this doesn't work, then you might try system file checker. Go to the safe mode command prompt and type sfc /scannow. Note: space between c and /
You may be asked for the Windows CD, if asked insert it.

Another solution: Perform disk error checking in Windows XP

Boot from Windows CD

At the Windows Setup screen, press R to enter the Recovery Console.

You will enter the Recovery Console and be asked to choose which Windows installation you would like to log into. Most users will only have one choice.

You will be prompted to enter the administrator password. This is the password set for the user Administrator. You may have set this password when you first were configuring your computer. If you are uncertain what password to enter here, try leaving the line blank and just pressing ENTER.

You will be presented with a C: prompt. Type chkdsk /r and press ENTER.

Checkdisk will now run. The scan may run for several hours or lesser. It depend on your HDD Space. When the scan is complete, a report similar to the one below will display

To leave the Recovery Console and reboot your computer, type exit and press Enter.

Now your Windows PC should be back to normal. Just try it!!

Amarok Music Player

2009-04-13T02:47:00.000-07:00

Amarok is a powerful music player for Linux and Unix, MacOS X and Windows with an intuitive interface.

I know about these from 1 of my friends. I did try to install Amarok to my ubuntu. It work and easy to use.

Here are the steps to install:

Open terminal
type sudo apt-get install amarok

For Windows and Mac OS user, can go to Amarok official web side download the installation file to install it.

How to Create a Signature in Thunderbird Email

2009-04-06T20:37:00.000-07:00

Step1

Open your Thunderbird software. Click on “Tools”. This will open a list of options.

Step2

Scroll down the list and click on “Account Settings.” This will open a dialogue box that displays the default identity. If this is not the email account you wish to work with, scroll through the list on the left-hand side to locate it. Click on the appropriate email account.

Step3

In the identity display, there is a check box with an “Attach this signature” with location box and “Choose” button below it.

Step4

Use the “Choose” button to locate your signature file. Once you locate the file, select it, and click “OK”.

Step5

Verify that the correct file and location has been input into the address bar. If it has not, search and select again. Once the correct file and location is in the location bar, click “OK” on the identity display.

Step6

Use the “Write” option to open up a new email. Your signature should be displayed on it. It will not display as an attachment, but as part of the text.

Step7

Verify that your signature shows up as desired by sending yourself an email to another account. If there are problems with the display, you may need to alter the signature file itself in order to correct it.

How to Use the vi Editor

2009-04-02T00:56:00.000-07:00

Starting vi and Saving Files
vi filename
- start editing filename, create it if necessary

Saving the file you're working on and/or leaving vi:

:wq
- write the file to disk and quit

:q!
- quit without saving any changes

:w! newfile
- write all lines from the entire current file into the file 'newfile', overwriting any existing newfile

:n,m w! newfile
- write the lines from n to m, inclusive, into the file newfile, overwriting any existing newfile

How to setup Apple Wireless Keyboard

2009-03-30T20:15:00.000-07:00

By default, Apple Wireless keyboard is not functioning at all. In order to make the Wireless Keyboard workable, follow the following steps to setup it:

Install the Apple Wireless Keyboard and Mouse software that came with the keyboard. Insert the CD, double-click the installer, and follow the onscreen instructions.
Turn the keyboard over, install the batteries as illustrated and replace the battery cover.
Open the Bluetooth Setup Assistant.
Click Continue.
At the Select Device Type panel, select Keyboard. Do not click Continue yet.
Using the power switch on the bottom of the keyboard, turn the keyboard on. The light above the power switch should begin to flash.
Click Continue. The keyboard's name should appear in the device list of the Search pane.
Select the keyboard in the Setup Assistant listing, then click Continue. The assistant will try to pair with the keyboard.
When the Setup Assistant prompts you to do so, type the passkey shown in the Setup Assistant on the Apple Wireless Keyboard. Press the Return key on the keyboard when you are finished.
Once the assistant says the computer and keyboard have successfully paired, click Continue.
Setup is complete. Click Quit.

You should now be able to use the Apple Wireless Keyboard.

How to use Malicious Software Removal Tool on Windows

2009-03-30T18:26:00.000-07:00

What is Malicious Software Removal Tool? Microsoft Windows Malicious Software Removal is a tools to checks computers running Windows Vista, Windows XP, Windows 2000 and Windows Server 2003 for infections by malicious software.

This tools will helps to remove any infection found and remove it. How to run this tools?

Here is the step:

Click Start->Run->mrt.exe->ok

How to Create a Mailing List in Outlook Express

2009-03-30T07:54:00.000-07:00

If you want send the same email to several people, you might feel frustrated cause you need to enter a lot of email address on the same time even the people are in the same group.
To solve this problem, you can try set up a mailing list. With this list, you can email several people at once without choosing each email address separately.

To set up a mailing list using Outlook Express: .

Select Tools | Address Book... from the menu in Outlook Express.
Select File | New Group... from the address book's menu.
Type the name of your mailing list in the Group Name: field. Eg: ITDept
Click the "Select Members" button on the right.
Click a name from your "Contacts" list. Click the "Select" button. Click another name from the list and click "Select" again. Continue choosing names until you complete your list. Click the "OK" button at the bottom of the box when your selection is complete.
Click "OK" if you are finished.

Finder icon dragged on desktop

2009-03-29T17:50:00.001-07:00

I accidentally drag my finder icon off the dock and unable to drag it off the dock.How??

Solution:

A quick fix is to force quit the dock in Activity Viewer.
re-launching the dock or restart the system

How to Remove Autorun Virus from Hard Disk Drives

2009-03-29T17:48:00.001-07:00

1. Open command prompt. Go to Windows, then Run, and type "cmd" . Press enter.
2. Type "cd\" and press enter to get to the root directory of c:\ .
3. Type "attrib -h -r -s autorun.inf" and press enter.
4. Type "del autorun.inf" and press enter.
5. Repeat the same process with other drives and restart your computer.
6. Restart your computer and it's done. Enjoy the freedom to open hard drives on a double click.

How to Prevent "Low Disk Space" Error Messages

2009-03-29T17:47:00.001-07:00

Sometimes, when you try to open the C: or D: drive in your computer, you will get a warning about low disk space. Even when you try to delete files, you may still get the same message. Here's what to do.

Run the Registry Editor (REGEDIT.EXE).
Open HKEY_CURRENT_USER\ Software\ Microsoft\ Windows\ CurrentVersion\ Policies\ Explorer.
If it's not there, create a DWORD value and call it NoLowDiskSpaceChecks.
Double-click on NoLowDiskSpaceChecks, and enter the value 1, and press OK.

Clearing Apple Mail email cache

2009-03-29T17:45:00.000-07:00

In Apple mail, when we start to email the old email address. It will pops up even though the address not in address book. Can we clean this email address from computer. The answer is yes.

Below are the step:

in Mail go to Window menu->previous recipients. delete the unwanted emails from there and they won't show up in the autofill anymore.

Installing Apache, PHP, MySQL and phpMyAdmin on Ubuntu 8.10

2009-03-27T09:32:00.000-07:00

How to setup a web server on Ubuntu 8.10??
Now I'll be showing how to install Apache, php, MySQL and phpMyAdmin (one by one) on Ubuntu 8.10 using Terminal.

Installing Apache2
Open terminal to type this command

sudo apt-get install apache2

When the setup is complete you can check if the Apache is working properly by pointing your browser to http://localhost. If you see the text “It works!”, it means Apache is working.

Installing php5
sudo apt-get install php5

When setup is complete, you have to restart Apache so that php5 will work on Apache.

sudo /etc/init.d/apache2 restart

Installing MySQL

sudo apt-get install mysql-server

Towards the end of the installation you will be prompted to set your root or admin password

Installing phpMyAdmin
phpMyAdmin is an interface for access mysql server. To install it, enter the following command from terminal

sudo apt-get install phpmyadmin

During the installation you will be asked to select the webserver that would be used to run phpMyAdmin. Select Apache2

Now you can go to the phpMyAdmin login page by pointing your browser to: http://localhost/phpmyadmin/index.php

How to add user in a group on ubuntu

2009-03-26T08:08:00.000-07:00

To create group, user this command


# groupadd itdept

To add a new user called ken to group itdept

# useradd -G itdept ken

Setup password for ken


# passwd ken

To check whether user in a group or not

# id ken

Add existing user to a group

# usermod -a -G itdept ian

How do I create new user account in Ubuntu Linux from command line?

2009-03-26T06:56:00.000-07:00

For those too dependent on GUI may facing a lot of problem when they turn to Command Line Environment. When user want to add user in command line, a lot of question mark will come out from their mind. How to add user without interface.

Code:

useradd techcare

Setup a password:

Code:

passwd tech123

How to download with command line on ubuntu

2009-03-23T20:44:00.000-07:00

Use wget.

Code:

wget -c http://www.nameofsite.com/path/abc.tar

How to speed up your firefox

2009-03-23T08:15:00.000-07:00

If you are Firefox user, you must be experience your Firefox slowing down. Firefox slowing down because of Firefox will record down the date and sited that visited when we use Firefox to browse Internet. Here is a quick tip to speed up your Firefox speed.

Goto
Preferences > Privacy > History and set the time limit to a couple of days.( Recommend set to 5-10days)

After done this setting, clear the history and restart your Firefox. Firefox loading speed will be increase.

Show Desktop icon missing, how??

2009-03-23T07:43:00.000-07:00

You can re-create the Show Desktop Icon by yourself, below are the steps:

1. Click Start, click Run, type notepad in the Open box, and then click OK.
2. Carefully copy and then paste the following text into the Notepad window:
[Shell]
Command=2
IconFile=explorer.exe,3
[Taskbar]
Command=ToggleDesktop
3. On the File menu, click Save As, and then save the file to your desktop as "Show desktop.scf". The Show desktop icon is created on your desktop.
4. Click and then drag the Show desktop icon to your Quick Launch toolbar.

Print PDF on Windows

2009-03-23T07:08:00.000-07:00

In order to save paper, can we generate all the document in PDF format on Windows?
The answer is yes!! One of the free tools that i use to generate PDF is called PDFCreator. Once you install this software, it serve like your printer. It will generate PDF file once you click print and select PDFCreator to print you documents.

To download

How to restart network on ubuntu

2009-03-22T18:51:00.000-07:00

sudo /etc/init.d/networking restart

How to edit DNS server address on ubuntu

2009-03-22T18:47:00.000-07:00

Type following command to edit DNS (Primary DNS/Secondary DNS) server:

sudo vi /etc/resolv.conf

Add/modify your ISP nameserver as follows

search isp.com
nameserver 202.188.0.133
nameserver 202.188.1.5

After save and exit

How to Delete file on Mac

2009-03-20T02:52:00.000-07:00

Drag its icon to the trash can. OR
Right click on the file that you to delete, select Move to Trash

How do i shutdown my Mac

2009-03-20T02:48:00.000-07:00

Most of the beginning Mac User sure will ask question about how to shutdown Mac.
Here are the steps:

Go to Apple Menu
Choose Shutdown

How to use spotlight on Mac

2009-03-18T19:44:00.000-07:00

You can initiate a Spotlight search any time by click the Spotlight icon on the right of the menu bar or using the Command-Space bar keyboard combination.The Spotlight

search is so fast that the results will actually change in real time as you type in your search query.Selecting an item from the results will open it immediately.

What is a kernel panic? (Mac OS X)

2009-03-17T07:39:00.000-07:00

I believed most of the Mac OS user see this screen before. Most of your will feel panic when u see this screen. After this screen appear, your just need to press power button off and on your Mac. Your system will back to normal.
But i think your do not know what was happening. It is because the kernel of an operating system receives an instruction in an unexpected format, or that it fails to handle properly. A kernel panic may also follow when the operating system is not able to recover from a different type of error. A kernel panic can be caused by damaged or incompatible software or, more rarely, damaged or incompatible hardware.

How to Use the Print Screen Function on a Mac

2009-03-05T22:14:00.001-08:00

Press the keys Shift, Command (Apple) and 3.
There will be an icon on your desktop called Picture 1. This is your screen capture.
Open Picture #1.
Follow your normal procedure for printing out.

Useful Keyboard Shortcut for Mac OS X

2009-03-05T21:55:00.000-08:00

Option-Commnad-Esc = Force quit applicaiton(s)

Command-1 = View as Icon

Command-2 = View as List

Command-3 = View as Columns

Command-4 = View as Cover Flow (Mac OS X 10.5 or later)

Command-Tab = Switch windows

Command-N = New Finder window

Shift-Command-N = New folder

Command-Q = Quit application

Command-Shift-Q = Log out

Command-S = Save

Command-W = Close windows

Command-E = Eject

Command-A = Select all

Command-C = Copy

Command-X = Cut

Command-V = Paste

Command-Z = Undo

Command-P = Print

Command-M = Minimize windows

Command-F = Find

Command-I = Get Info

Command-K = Connect to Server

Option-Command-Y = Slideshow (Mac OS X 10.5 or later)

Option-Command-I = Show Inspector

Command-Delete = Move to Trash

Shift-Command-Delete = Empty Trash

Shift-Command-Q = Log Out

Option-Shift-Command-Q = Log Out immediately

Command-Space = Show or hide the Spotlight search field

Option-Shift-Command-Delete = Empty Trash without confirmation dialog

Command-Shift-3 = Take screen shot

Command-Shift-4 = Take screen shot of selected material

Ctrl - Shift - Eject = Will put the screen to sleep

Option - Command - Eject = Will put the computer to sleep

Ctrl - Command - Eject = Restart the Computer

Ctrl - Option - Command - Eject = Shutdown the computer completely