FooCrypt, A Tale Of Cynical Cyclical Encryption

Requirements :

Install the Ubuntu packages required by FooCrypt

sudo apt install ksh expect tcl tk binutils gzip unzip { enter your password when prompted }

sudo apt install firefox evince { enter your password when prompted }

*firefox is required for HTML [ Online ] & PDF Documentation From The FooCrypt Help Menu
*evince is the standard Ubuntu PDF viewer for viewing the PDF Documentation From The FileSystem

Update your .profile

echo export PATH=\${PATH}:/opt/FooCrypt >> ${HOME}/.profile

Pre FooCrypt.2.1.1 required you to set the DISPLAY variable manually, DISPLAY=:0 this is now set internally by FooCrypt.2.1.1+

echo export DISPLAY=:0.0 >> ${HOME}/.profile

*Note : RPM packaging systems

dpkg can be installed via the latest epel-release by following the instructions for your Linux installation @

The FooCrypt install requirements should be installed via yum

The DEBIAN package requirements defined in the FooCrypt Debian package will fail, so you should manually check that all required packages for your installation are available to FooCrypt by running /opt/FooCrypt/FooCrypt -c and fixing any errors.


To Install :

FooCrypt, A Tale Of Cynical Cyclical Encryption

Version : FooCrypt.X.Y.Z.Core.Linux

1. To check that FooCrypt is Not already installed :

dpkg -l | egrep -i foocrypt

2. To Remove FooCrypt.X.Y.Z.Core.Linux

sudo dpkg -r foocrypt

sudo dpkg –purge foocrypt

*You will need to manually remove any local customisations including the Desktop items created by


3. To Install FooCrypt.X.Y.Z.Core.Linux

sudo dpkg -i foocrypt-X.Y.Z-core-linux_x86_64.deb

4. Accept The License Agreement During The Installation Process

5. The postinst script will check to see if a symbolic link is available in the /usr/bin directory pointing to powershell.exe and will produce an ERROR if one does not exist with instructions on how to create the symbolic link.

powershell.exe is utilised for the Licensing functions of FooCrypt, in order to identify the USB Dongle serial number.

See for further details

ERROR : FooCrypt requires a symbolic link for powershell.exe to be present in /usr/bin
ERROR : Please manually create the link via
ERROR : sudo ln -s [ FULL PATH TO YOUR powershell.exe ] /usr/bin/powershell.exe
ERROR : ie:
ERROR : sudo ln -s /mnt/c/Windows/System32/WindowsPowerShell/v1.0/powershell.exe /usr/bin/powershell.exe

6. Lots of images located in /opt/FooCrypt/Scripts/Data/Images which you can utilise as desktop wallpapers.