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Hide the taskbar in Windows 10

Windows 10 update changes the way how to hide the taskbar.
The old way was the traditional way of hiding the taskbar just like in Windows XP, by right clicking on an empty taskbar and selecting “properties” and from the properties window there is an option to hide the taskbar automatically.
However, Windows 10 OSes that has  been updated, right clicking the empty taskbar does not show “properties” anymore.  Instead of clicking or finding properties, click on “settings” and on the settings Window, an option to hide the taskbar in desktop mode can be enabled or disabled.
See screens shot below, on how to do it:





================================ Free Android Apps:
Click on links below to find out more:
Linux Android App cheat sheet: https://play.google.com/store/apps/details?id=com.LinuxMobileKit
Multiplication Table for early learnershttps://play.google.com/store/apps/details?id=com.TableMultiplication
Catholic Rosary Guide  for Android:
https://play.google.com/store/apps/details?id=com.myrosar…

Insert a new PCIe graphic card

Inserting a new PCIe graphic card to a custom built-PC, it sounds easy right.
Plug the PCIe graphic card to the PCIe slot on the motherboard; insert DVI, VGA cable or any other input that the graphic card supports.
Then, simply power on the PC and boom, everything will be working. However, the monitor shows a blank screen only.
If the PCIe graphic card has been tested and working well, then try resetting the CMOS or remove the CMOS battery and power on the PC for 5 seconds turn it off and put back the CMOS battery.
Now, turn on again the PC plug the monitor cable to the graphic card and if the PCIe card is inserted properly in the slot. Then the monitor will work as per normal. The display will be working fine. If the above process does not work and you are sure that everything is done properly then it could be some other issues.
When inserting or troubleshooting the graphic card, it is better to unplug the hard disk. Because if the monitor has no display, you do not know whether the…

Windows 7 black screen after windows logo

Windows 7 just show a black screen, after showing the windows logo on startup.
On Windows startup with the black screen, try pressing caps lock key. If caps lock key respond normally, then there’s a chance that windows boot up properly. Press the power button for 3 seconds and release it.
If windows shutdown properly, turn on the computer again. This time, try pressing F8 to go to safe mode.
In safe mode, open device manager. Open windows explorer, right click on “This Computer” or “My Computer” and select properties, this will open device manager.  Or alternatively, go to control panel and select device manager.
In Device Manager, select the Display Adapter, right click on it and click properties. From the properties, uninstall the driver. Don’t worry windows will install its standard or default display driver.
Restart or shutdown the computer, if the problem is just the corrupted display driver then startup should be working  fine and the black screen issue is not present anymore.

Copy folder/file to multiple folders

Copy a single folder to multiple folders?

Copy a file to multiple folders?

This can be done easily using PowerShell script.

Script below requires PS 3.0, but it can easily be tweak for other version.

Here's the script:

#++++++++++++++++++++++++++++++
$source_folder="D:\xfolder\United Folders"
dir -Directory "D:\Unity\Project_016\" | ForEach-Object {
write-host $_.fullname
Copy-Item -Path $source_folder -Destination $_.FullName
}

#++++++++++++++++++++++++++++++

What the script does is the $source_folder is to be copied to all folders in the destination.

Basically, the "United Folders" is to be copied to the root of the sub folder in destination folder which is "D:\Unity\Project_016\".

Example:
D:\Unity\Project_016\01
D:\Unity\Project_016\02
D:\Unity\Project_016\03

After executing the script, the folders will look like this:
D:\Unity\Project_016\01\United Folders
D:\Unity\Project_016\02\United Folders
D:\Unity\Project_016\03\United Folders

It dep…

Excel formula fixed cell address

How to insert a formula with a fixed cell address? Absolute referencing will come to the rescue.

Absolute reference in Excel is prefix with a dollar ($) sign.

$A$1: This means that Column "A" and Row "1" will not change when copied to another cell.

Example:

=SUM(A$1,$A2,$A$1)


The above formula when copied from one cell to another cell, $A$1 will remain the same.

While A$1,$A2 will change its location when copied to another cell.

 A$1: This means that column "A" will change while row location (which is number 1) will not change when copied.

 So this absolute reference will change like D$1, G$1 or E$1 depends on the location. So number "1" value will never change.

 $A1: The column "A" will not change when copied from one cell to another cell, while the row value which is number "1" will change.


So the above absolute reference will change like $A3, $A10, $A12 etc., Column "A" will be constant while the row changes.


So…

Linux protect file from deletion

To protect file from deletion in Linux system, the chattr command is able to set the attributes that protects the file.

chattr +a my_protected_file.txt

chattr +a  == means that the file can be appended and the file can't be deleted as well.

To set the file to immutable, "+i"  attribute can be used.

chattr +i the_protected_file.txt

Immutable file is protected from deletion and the original contents of the file is also preserved because no changes can be made.

This command below:

ls xx*.txt >> the_protected_file.txt

The command above will show "permission denied" if the file is immutable.

If the file is set with +a, then the above command will append the output of "ls" to the file.

To unset or removed the attribute use the minus sign, "-a", "-i".

For example, chattr -a the_protected_file.txt or  chattr -i the_protected_file.txt

To know more about chattr type the command below:

man chattr
chattr --help
info chattr


This wiki link shows …