10/26/2010

Deleting Windows viruses through a Linux live CD

According to Katherine Noyes of PC World, you can Fix a Windows Infection Using Linux. You can use the live CD (or USB flash drive) for any Linux distribution. As an example, Katherine presents a procedure that lets you scan for Windows viruses through an Ubunutu 10.10 live CD.


For example, if you have a Windows PC that a virus has converted to a boat anchor, you can shut down, reboot through the live CD without installing Linux, and then use the antivirus utility on the CD. After deleting or quarantining the virus, remove the CD and reboot through Windows. Hopefully, your Windows again runs normally. If so, thank the penguin.

9/06/2010

Saving money on phone calls

You can reduce your telephone expenses by using two phone systems:
  • A prepaid cell phone for incoming calls. The cheapest is currently 10 cents per minute.
  • Google's free Call-phone feature for outgoing calls.
Update on 9/6/12: Here's a link to an interesting article that a friend has written about her free Lifeline wireless service, which is available to people who receive certain types of state or federal assistance, and those whose income is below 135% of the federal poverty level.

Update on 10/27/10: Recently, I was pleasantly surprised to find a Gmail Call-phone capability I did not expect. You can call any business that asks you to press phone keys to access menu items. Simply use your mouse to click the Call-phone keys.

In recent decades, phone costs have been increasing faster than inflation. While still using the Plain Old Telephone System (POTS), I had noticed my phone company adding new "fees" or "service charges'' to my bill almost every month. My usage had not increased, but my wallet had grown thinner.


In 2005, I abandoned POTS and connected my phone to a Voice over Internet Protocol (VoIP) provider. At first, they charged reasonable rates for excellent service. For unlimited domestic calls, I paid approximately $28.00 per month, including taxes. However, about two years ago, my VOIP provider also stared adding "fees" and "service charges.'' Eventually, my monthly bill approached $40.00. After I reduced my plan level, from unlimited calls to 250 minutes per month, my monthly bill dropped to about $31.00. Again, this did not last. Additional "fees" and "service charges'' continued increasing my bill so that it again approached $40.00.

A few months ago, I abandoned my VOIP provider and bought a prepaid cell phone, which usually saves money for users like me who make relatively few phone calls.

More recently, I was also able to abandon half my cellphone, figuratively. Google has added a free Call-phone feature to Gmail. Therefore, I need not pay for outgoing calls. I now pay only for incoming calls to my cell phone.

I did need to buy a microphone for my PC. However, I do not feel guilty. Under similar circumstances, I believe even Jack Benny would have spent $12.00 for a microphone.

8/21/2010

Problems with OpenOffice.org on Ubuntu 10.4

If you are experiencing problems running OpenOffice.org under Ubuntu 10.4, you might be able to solve those problems by simply installing the OpenOffice.org Office Suite over your current OpenOffice.

After recently updating my PC to Ubuntu 10.4, I discovered I could not install the LanguageTool grammar-checker extension for Writer (the OpenOffice.org word processor). Also, I could not export an ODT file as an XHTML file. I found the solution to both problems accidentally. While looking for any Ubuntu software that might help, I stumbled upon OpenOffice.org Office Suite. Installing this suite over my existing OpenOffice repaired both problems.

For more details, please see my Associated Content document, How to Repair OpenOffice.org On Ubuntu 10.4.

5/31/2010

Fixing Open Office Writer auto-"corrected" date

Open Office Writer is the the word processor in the free, open-source OpenOffice.org Productivity Suite. OOo Writer shares some "features" with Microsoft Office Word, including, unfortunately, automatic "corrections" that are a bit tricky to disable. Open Office developers should really fix this! By default, all auto corrections should be off (disabled). Users who want  auto corrections could enable them selectively.

Currently, you can disable most automatic corrections according to How to Set Up Open Office Writer for Easy Use. However, even after you think you have turned off all automatic corrections, there are still a few active mines waiting for you to step on them. For example, today, while creating a table in Open Office Writer, I came upon a NASTY glich, bug, problem, and royal pain. To sort by dates across multiple years, I needed to enter dates as yyyy-mm-dd, such as "2009-09-23." Each time I tried this, OOo Writer automatically "corrected" it to "09/23/09," which I did NOT want.

If you have the same problem, do the following:
  1. Select the table column that contains your date fields.
  2. Right-click your date column to display its menu, and then click Number Format to display its window.
  3. In the Category frame, scroll to and select Text, and then click OK to close the Number Format window.
Note: I found the above solution in the Ubuntu forum. (See #8.)

I am a huge fan of Open Office, and I really want to break my M$ addiction, but sometimes I am almost ready to give up. 

    4/17/2010

    How to build a LAMP test website on Ubuntu

    You can use a LAMP (Linux, Apache, MySQL, and PHP) test server on Ubuntu to develop a website on your computer before you upload it to a website host. To build a LAMP test website on your Ubuntu PC, you need to install LAMP and KompoZer, access your LAMP test website through root, edit your test website homepage, edit your test website new pages, and then test your website.

    Installing LAMP and KompoZer
    After installing LAMP and KompoZer, you can build and test a website in your LAMP test server on your Ubuntu PC. To install LAMP and KompoZer, do the following:
    1. Install LAMP according to the instructions in How to Set Up a LAMP Test Server on Ununtu.
    2. Click System, select Administration, click Synaptic Package Manager, and then enter your password to display the Synaptic Package Manager window.
    3. In the Quick search field, type kompozer to display its package.
    4. Select kompozer and then click Apply to install the free KompoZer web-authoring software. Alternatively, you can install Bluefish. However, KompoZer is easier to use.
    Accessing Your LAMP Test Website Through Root
    Accessing your LAMP test website as a root user lets you add and edit HTML files to expand and modify your test website. To access your LAMP test website, do the following:
    1. Open Ubuntu, click Applications, select Accessories, and then click Terminal to display its window and a "~$" (tilde dollar-sign) prompt.
    2. At the flashing cursor immediately after the "~$" prompt, Type sudo nautilus to run Nautilus and display a root - File Browser window.
    3. Click File System, double-click var, and then double-click www to open it. As shown below, your www folder (your LAMP test website) should initially contain two files: index.html and testing.php.
    Initial LAMP Test Website

    Note: For information about the testing.php file, see How to Set Up a LAMP Test Server on Ununtu.

    Editing Your LAMP Test Website Homepage
    Edit you LAMP test website home page according your requirements. For example, your homepage should include hyperlinks to other pages in your test website. This simple example has only a homepage and two other pages.
    1. Access your test website through your root browser according to the section above.
    2. Right-click index.html, select Open with, and then click KompoZer to open it and display your initial homepage.
    3. Type over the first line ("It Works!") with This is Your Test Website Homepage!
    4. Type over the second line with Here is a link to New Page One. Select (highlight) New Page One, click Link to display a Link Properties window, type http://localhost/newpageone.html into the Link Location field, and then click OK to add the hyperlink and close the window.
    5. Add a new line and type Here is a link to New Page Two Select (highlight) New Page Two, click Link to display a Link Properties window, type http://localhost/newpagetwo.html into the Link Location field, and then click OK to add the hyperlink and close the window.
    6. Click File, and then click Save to save your new homepage in your LAMP test website.
    7. Click File; click Save As to display the Save Page As window; in the Name field, type newpageone.html; and then click Save to create your New Page One in your test website.
    8. Click File; click Save As to display the Save Page As window; in the Name field, type newpagetwo.html; and then click Save to create your New Page Two in your test website.
    9. Minimize the KompoZer window to redisplay the root www - File Browser. As shown below, your www folder (your LAMP test website) should now contain four files: index.html, newpageone.html, newpagetwo.html, and testing.php.
    10. Edit your test website new pages according to the section below.
    Two New Pages on LAMP Test Website

    Editing Your LAMP Test Website New Pages
    Edit you LAMP test website new pages according your requirements. In each page, you should include links to Home and other pages in your test website. This simple example has only a homepage and two other pages.
    1. Redisplay the KompoZer window. Click File, click Open File to display the Open HTML File window, select newpageone.html, and then click Open to display the page in a new KompoZer tab.
    2. Type over the first line ("This is Your Test Website Homepage!") with New Page One!
    3. In the second line, type over New Page One with Home. Select (highlight) Home, click Link to display a Link Properties window, type http://localhost/index.html into the Link Location field, and then click OK to edit the hyperlink and close the window.
    4. Click File, click Open File to display the Open HTML File window, select newpagetwo.html, and then click Open to display the page in a new KompoZer tab.
    5. Type over the first line ("This is Your Test Website Homepage!") with New Page Two!
    6. In the second line, type over New Page One with Home. Select (highlight) Home, click Link to display a Link Properties window, type http://localhost/index.html into the Link Location field, and then click OK to edit the hyperlink and close the window.
    7. In the third line, type over New Page Two with New Page One. Select (highlight) New Page One, click Link to display a Link Properties window, type http://localhost/newpageone.html into the Link Location field, and then click OK to edit the hyperlink and close the window.
    Testing Your LAMP Test Website
    Each time you finish editing any page on your LAMP test website, you should test that page by opening your test website in a web browser, such as Mozilla Firefox. In this simple example, you edited three pages. Therefore, you should test all three pages as follows:
    1. Open your web browser, type http://localhost in its address line, and then press Enter to display your LAMP test website homepage.
    2. Click on the New Page One hyperlink to display your new page one, and then click on the Home hyperlink to display your home page.
    3. Click on the New Page Two hyperlink to display your new page two, and then click on the Home hyperlink to display your home page.
    4. Click on the New Page One hyperlink to display your new page one, and then click on the New Page Two hyperlink to display your new page two.
    5. Click on the New Page One hyperlink to display your new page one, and then click on the New Page Two hyperlink to display your new page two.
    Note: If any hyperlinks are not working, edit your homepage and new pages according to the sections above.

    4/06/2010

    How to set up a LAMP test server on Ubuntu

    You can set up a LAMP (Linux, Apache, MySQL, and PHP) server as a test server on your Ubuntu 9.10 PC. A LAMP server lets you develop a website on your computer before you upload it to a website host. For additional information and details, see Tux Tweaks: Install LAMP Server on Ubuntu.

    Additional Information, 04-13-10: As explained in the Note in the "Using LAMP Server as Your Test Server" section at the end of this article, you must open the root file browser before you can add files to LAMP test server.

    Installing LAMP Server on Ubuntu
    To install a LAMP test server on your Ubuntu PC, do the following:
    1. Open Ubuntu, click Applications, select Accessories, and then click Terminal to display its window and a "~$" (tilde dollar-sign) prompt.
    2. At the flashing cursor immediately after the "~$" prompt, Type sudo apt-get install lamp-server^ and then press Enter to display a password prompt. Note: To type the "^" (caret symbol), use Shift+6.
    3. Type your password and then press Enter to display the packages that you can install, and "Do you want to continue [Y/n]?"
    4. Type y and then press Enter to start the installation and display a prompt to set your MySQL password. Type the password, press Enter to display a retype-password prompt, retype your MySQL password, and then press Enter to continue installing packages.
    Testing Apache and php LAMP Server Components
    Apache and php are components of the LAMP software bundle. To test Apache and php, do the following:
    1. Open a web browser. Type http://localhost/ in the address field, and then press Enter to display a web page that says "It works! This is the default web page for this server. The web server is running but no content has been added, yet." This Apache server is your LAMP test server. Close the web browser.
    2. Click Applications, select Accessories, and then click Terminal to display its window. Type gksudo gedit /var/www/testing.php and press Enter to display a password prompt. Enter your Ubuntu password and click OK to open a gedit text-editor window.
    3. Type into the text editor, and then click Save to save the file. Close the text-editor window to redisplay the terminal window.
    4. Type sudo /etc/init.d/apache2 restart and press Enter to restart the Apache server.
    5. Open a web browser. Type http://localhost/testing.php/ in the address field, and then press Enter to display a web page that shows details about your php installation.
    Configuring the MySQL LAMP Server Component
    MySQL is the database component of the LAMP software bundle. To configure MySQL for use with your LAMP test server, do the following:
    1. Click Applications, select Accessories, and then click Terminal to display its window.
    2. Type cat /etc/hosts | grep localhost and press Enter to display "127.0.0.1 localhost ::1 localhost ip6- localhost ip6-loopback." 127.0.0.1 is your localhost IP address. localhost is red.
    3. Type cat /etc/mysql/my.cnf | grep bind-address and press Enter to display "bind-address = 127.0.0.1." If the bind address does not match your localhost address, type gksudo gedit /etc/mysql/my.cnf to open a gedit text-editor window, scroll to the bind address, and then change it to "127.0.0.1".
    Installing and Testing phpMyAdmin for LAMP Server
    The phpMyAdmin utility simplifies working with a MySQL database within your LAMP test server. To install and test phpMyAdmin, do the following:
    1. Click Applications, select Accessories, and then click Terminal to display its window. Type sudo apt-get install libapache2-mod-auth-mysql phpmyadmin and press Enter to display the packages that you can install, and the message "Do you want to continue [Y/n]?"
    2. Type y and then press Enter to start the installation and display a Configuring phpmyadmin window. Use your keyboard up and down arrow keys and its spacebar to select apache2, and then press Enter to continue the installation and display another Configuring phpmyadmin window.
    3. Use the Tab key to select Yes and then press Enter to display a database-password prompt. Type your MySQL password (you had set this in the Installing LAMP section above), and then press Enter to display a phpMyAdmin-password prompt.
    4. For simplicity, you can use your MySQL password also as your phpMyAdmin password. Type your MySQL password, and then press Enter to display a password-confirmation prompt. Retype your MySQL password and then press Enter to finish installing phpMyAdmin. Close the terminal window.
    5. Open a web browser. Type http://localhost/phpmyadmin/ in the address field, and then press Enter to display the phpMyAdmin login web page. In the Username field, Type root in the Username field, type your MySQL password in the Password field, and then click OK to display a phpMyAdmin window.
    Using LAMP Server as Your Test Server
    If you wish to work on only a single website, place its files in /var/www. To see the initial contents of folder www, click Places, click Computer, click File System, double-click var, and then double-click www to open it. Folder www intially contains only two files: index.html and testing.php.

    Note: Before you can add files to your LAMP test server, you must click Applications, select Accessories, click Terminal to display its window, and then type sudo nautilus to open the root file browser. You can then paste HTML files into root/var/www.

    If you wish to work on multiple web sites, go to Tux Tweaks: Apache Configuration.

    2/15/2010

    Networking Ubuntu 9.10 and Windows XP

    This article explains how to share files and folders between your Ubuntu 9.10 computer and your Windows XP computer through your wired, ethernet home network. For background information and additional details, see Mount samba shares with utf8 encoding using cifs. Though this background information focuses on servers, it also applies to workstation computers. Therefore, procedures and examples in the article below focus on networking Ubuntu 9.10 and Windows XP computers.

    To network Ubuntu 9.10 with Windows XP, you need to perform two procedures:
    1. On your XP computer, use the Set Up Sharing on Windows XP procedure below to share your XP Shared Documents folder with all network users.
    2. On your Ubuntu computer, use the Set Up Sharing on Ubuntu procedure below to create a share point, which is a desktop icon through which you have read and write access to the Shared Documents folder on your XP computer.
    Set Up Sharing on Windows XP
    To set up Windows XP to share documents with Ubuntu through your wired, ethernet home network, do the following:
    1. On your Windows XP computer, click My Computer to display its window.
    2. Right-click Shared Documents, click Properties to display its window, and then click Sharing to display its page.
    3. In the "Network sharing and security" frame:
      1. Select Share this folder on the network.
      2. Write down the Share name, which is "SharedDocs" in this example. You will need the Share name when you perform the Set Up Sharing on Ubuntu procedure below.
      3. Select Allow network users to change my files.
    4. Click Apply to set folder permissions, and then click OK to close the window.
    5. Click Start, click Settings, and then click Control Panel to display it.
    6. Double-click System to display its window, and then click Computer Name to display its page.
    7. Write down the contents of the Full-computer-name field, which is "alpha" in this example. You will need the Full computer name when you perform the Set Up Sharing on Ubuntu procedure below.
    Set Up Sharing on Ubuntu
    To set up Ubuntu to share documents with Windows XP through your home network, do the following:
    1. On your Ubuntu computer, click Applications, select Accessories, click Terminal to display its window, and then do the following:
      1. Type sudo aptitude install smbfs, press Enter, type your password, press Enter again, follow the prompts, and then to install the smbfs packages, which you need for sharing files on the network.
      2. Type sudo mkdir /media/ubuntusharename, and then press Enter to name the share icon that will be on the Ubuntu desktop. Use a meaningful name for the ubuntusharename. This example uses "betashare" because the Ubuntu computer name is beta.
      3. Type sudo nano /etc/nsswitch.conf, and then press Enter to display the nsswitch configuration file through the nano editor.
      4. On the Hosts line, use the arrow keys to move your cursor to the "d" in dns on the hosts line, type wins and a space immediately before dns so that the hosts line is
        hosts: files mdns4_minimal [NOTFOUND=return] wins dns mdns4.
      5. Press Ctrl+X, type y, and then press Enter to save your edits and close the nano editor.
      6. Type sudo aptitude install winbind, and then press Enter to install windbind.
    2. Close the terminal window, and then turn off your Ubuntu computer completely.
    3. Turn your Ubuntu computer back on, click Applications, select Accessories, click Terminal to display its window, and then do the following:
      1. Type sudo cp /etc/fstab /etc/fstab_old, and then press Enter to back up your fstab file. Do not skip this step because fstab is an important system file. In case you need to recover fstab, use the following command: sudo mv /etc/fstab_old /etc/fstab.
      2. Type sudo nano /root/.smbcredentials, and then press Enter to display your credentials file, which might be empty.
      3. Add two lines to your credentials file:
        username=winusername
        password=winpassword
        Replace winusername with your user name on your Windows XP computer. Replace winpassword with your Windows XP password.
      4. Press Ctrl+X, type y, and then press Enter to save your edits and close the nano editor.
      5. Type sudo chmod 700 /root/.smbcredentials, and then press Enter so that only root can access your credentials file.
      6. Type sudo nano /etc/fstab, and then press Enter to display your fstab file. At the bottom of the file, add the following line:
        //wincomputername/winsharename /media/ubuntusharename cifs guest,rw,iocharset=utf8,file_mode=0777 0 0
        Replace wincomputername with your Windows XP Full computer name, which is "alpha" in the Set Up Sharing on Windows XP procedure above. Replace winsharename with your Windows XP Share name, which is "SharedDocs" in the Set Up Sharing on Windows XP procedure above. Replace ubuntusharename with your Ubuntu share name, which is "betashare" in this example. Therefore, this line on the example Ubuntu computer is:
        //alpha/SharedDocs /media/betashare cifs guest,rw,iocharset=utf8,file_mode=0777 0 0
      7. Press Ctrl+X, type y, and then press Enter to save your edits and close the nano editor.
      8. Type sudo mount -a, and then press Enter to display your Ubuntu-share icon on your Ubuntu desktop.
    4. Close the terminal window, and then double-click your Ubuntu-share icon to open it. It should contain the same folders and files as the Shared Documents folder on your Windows XP computer.