How To Hide Your Secret Files Inside An Image

Steps to hide your secret files inside any Image!

Step1. At first from the desktop create a folder, name it CodingSec and then put some files. (For Example; put three music files)

Step2. Now suppose if you selected any three then compress those three files using WinRAR(see image). Once you created a RAR file name it as CodingSec.

Step3. Now just put one image as I had done, name it as Logo.jpg (file must be in JPG format). That’s it all done! Exit from that Folder.

Step4. Now Open CMD as Command Prompt from Start Type CMD hit enter. Now start typing as below listed, see image also for better understanding.
Type1: cd Desktop\CodingSec
Type2: copy /b Logo.jpg + CodingSec.rar Logo.jpg
Hit Enter
Type3: exit

You just created an image file that contains all the three files but not visible to anyone until and unless you open that image file using WinRAR Archiver.

If you don’t see your WinRAR Archiver then Choose Default Programs and Browse it to the Bottom of the Windows you can see WinRAR and from there double click to make that enable and open from that file.

Now you can see that your Image file size is increased.

Note: The Image file as Logo, you can move that file to any location of the computer.

How to install Linux / UNIX *.tar.gz tarball files

tar.gz also known as tarball, an archive format for electronic data and software. Most Linux tarball contains a source code for software. If you are new to Linux I recommend using apt-get, rpm and yum command to install all binary packages.
Tarballs are a group of files in one file. Tarball files have the extension .tar.gz, .tgz or .tar.bz2. Most open source software use tarballs to distribute programs/source codes.

# 1: Uncompress tarball

To uncompress them, execute the following command(s) depending on the extension:
$ tar zxf file.tar.gz
$ tar zxf file.tgz
$ tar jxf file.tar.bz2
$ tar jxf file.tbz2
Now change directory
$ ls
$ cd path-to-software/

# 2: Build and install software

Generally you need to type 3 commands as follows for building and compiling software:
# ./configure
# make
# make install

Where,

• ./configure will configure the software to ensure your system has the necessary functionality and libraries to successfully compile the package
• make will compile all the source files into executable binaries.
• Finally, make install will install the binaries and any supporting files into the appropriate locations.

# 3: Read INSTALL / README file

Each tarball comes with installation and build instructions. Open INSTALL or README file for more information:

$ vi INSTALL

How to create and extract .tar.gz archive

One of the most common compression formats used inGNU/Linux and variants is tar.gz. A tar.gz file is nothing but a gzipped tar archive. These days users of GNU/Linuxsystem seldom have to use the command line to create or extract tar.gz archives. But it is a useful command to keep in your arsenal if you are a system administrator.

To create a tar.gz archive from a given folder you can use the following command 

tar -zcvf tar-archive-name.tar.gz source-folder-name 

This will compress the contents of source-folder-name to a tar.gz archive named tar-archive-name.tar.gz

To extract a tar.gz compressed archive you can use the following command 

tar -zxvf tar-archive-name.tar.gz 

This will extract the archive to the folder tar-archive-name. 

To eject USB drive in Linux

udisks command completely remove and power off any usb device mounted or attached in the system unmount command just unmount the partition ie: dev/sdb1 or whatever but the usb is still present in the system.

So is not the same unmount, eject and detach

udisks = power off the usb

umount = just unmount the partition not the whole pendrive

eject = the same or very close to umount command

udisks --detach /dev/sdX where (X) is the last letter of your usb device. It works fine on any linux system.

diskutil eject /Volumes/<LABEL>

sudo eject /dev/sda


umount <mount point>         To see mount point user mount command

How to uninstall McAfee Agent

McAfee Agent cannot be removed while it is in managed mode

Problem: The following message displays when select Remove for the McAfee Agent through Add \ Remove Programs or Programs and Features on client computers:

” McAfee Agent cannot be removed while it is in managed mode”

Solution:

The computer must be removed from Managed Mode

Steps: 
1- Open Command Prompt
2- Go to the folder” C:\Program Files (x86)\McAfee\Common Framework” on X64 systems,” C:\Program Files\McAfee\Common Framework” on X86 systems
3- Type “frminst.exe /forceuninstall” and press enter. command without quotes

Driver Issue while Installation with Pendrive

 This is the solution. 

I assume all of you is using USB drive to install. 

When Windows is asking for driver, just click Cancel. You will be brought back to the welcome screen. At the welcome screen, remove your USB drive, insert it back to DIFFERENT USB PORT. Click Install Now again. The installation process will be like usual. 

This problem happened to all new version of updated Windows 7 installer. I think, it is due to failure of Windows installer to remain its detection to the USB drive. It lost the connection, and became confused, don't know where to find the USB drive it used to read before. 

When we re-insert the USB drive, Windows installer will detect the USB drive back, and continue like usual. 

Good luck and cheers! TQ.

Getting 3 Beeps as Boot Error code and Computer Failed to Start

It is easy to detect issues which prevent a PC from booting due to faulty RAM module installed. Three continues beep sounds with repetition while booting your computer is a common error code given by motherboard to inform memory issues. It tells, PC failed to achieve successful POST (Power On Self Test)due to issues with RAM installed. This error code is specifically for the computer with Intel motherboard to show POST issues when it failed to detect RAM. This will be like beep, beep, beep [Pause] and then repeat the same pattern. This guide explains how to handle such a situation where your laptop failed to start with three beep sounds.