How to mount an encrypted partition?

Map the partition cryptsetup luksOpen /dev/sdXN securebackup Mount the partition mount /dev/mapper/securebackup /mnt

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How to setup partition encryption?

To setup partition encryption on Ubuntu, perform the following steps: Install the required software apt-get install cryptsetup For more security, erase the partition you want to encrypt with one of

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How to backup and restore Windows 7 activation files

It is possible to backup and restore the activation status of Windows 7 Backing up the activation files To backup the activation status, backup the following files. Administrator access rights

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How to use the loop device on Unix?

The loop device on Unix lets access a file as a block device.  Disks are block devices.  So, it is possible to use a file as a disk.  The first

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How to control the brightness of the display from command line?

You can set the brightness of the display by issuing this command within a shell echo 3 > /sys/class/backlight/acpi_video0/brightness where 3 is the brightness level. Its value is from 0

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How to restore the normal scroll bars in Ubuntu 11?

Simply create a file named /etc/X11/Xsession.d/80overlayscrollbars and put into it the following line: export LIBOVERLAY_SCROLLBAR=0 or simply execute the following command echo “export LIBOVERLAY_SCROLLBAR=0” > /etc/X11/Xsession.d/80overlayscrollbars You need to do

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Install Ice Cream Sandwich on a Google Nexus S

I have installed Ice Cream Sandwich (ICS) on a Google Nexus S. It works perfectly. The process is not complicated but requires some basic technical skills. What’s interesting about the process

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Converting a certificate from DER to PEM or PEM to DER

openssl x509 –in input.pem –inform PEM -out output.der –outform DER openssl x509 –in input.der –inform DER -out output.pem –outform PEM

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How to remove the passphrase on a private key

To remove a passphrase on a private key, simple execute this command. openssl rsa -in server.key -out server.unprotected.key Since it is a private key, make sure that it is well

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Creating a certificate for a server

Creating a server certificate involves only a few steps. To do so, execute the following commands. This post assumes that “OpenSSL initial configuration” and “Creating a ca’s self signed certificate”

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Creating a ca’s self signed certificate

In order to create your own certificates, you need a CA (certificate authority) certificate. This certificate will be used to sign every certificate you will create. To do so, execute

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Tomcat and MySQL benchmarks

Benkmarks made using a Tomcat and a MySQL database. These figures are provided to give you an idea of the performance you should expect. The tests were done in the

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OpenSSL initial configuration

This initial configuration procedure assumes that you are executing it on Linux Create a special user named ‘ca’. Its home directory will hold the data. It must protected carefully. For

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How to change the signature of a disk

To change the signature of a disk under Windows 7, follow these steps are: Run the command line utility diskpart as the administrator user Execute the command “list disk” to locate

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Installation of the AVR toolchain on Ubuntu to develop for the Arduino Platform

Install Eclipse using “Ubuntu Software Center” Install the AVR Eclipse Plugin using Help >> Install New Software. The source link is http://avr-eclipse.sourceforge.net/updatesite/ Install the gcc toolchain apt-get install avrdude binutils-avr

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SSH login without password

It is possible to securely connect to a SSH server without a password. To do so, you must perform the following steps. It assumes that both machine are running a

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How to create a SSH tunnel

You can connect to a remote host [remote-host] using another machine [proxy-host]. This can be accomplished if the [proxy-host] as an SSH server running. To do so, logon to the

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How to replace LibreOffice by OpenOffice in Ubuntu 11

If you prefer using OpenOffice than LibreOffice in Ubuntu 11, you can replace it using these few steps: Download OpenOffice from http://download.openoffice.org/other.html. Download either Linux Intel DEB or Linux x86-64 DEB depending

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Unix History

I can bet that you have no idea what the Unix timeline looks like. Curious? Download this PDF file from www.levenez.com.

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USB Flash Drives comparison

Manufacturer Model Capacity Read speed(MB/s) Write speed(MB/s) Patriot Xporter XT Rage 32 GB 27 25 Corsair Voyager GTR 32 GB 34 28 Lexar Echo MX 32 GB 30 17 Kingston

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