Installing Haskell IDE leksah in Ubuntu 15.10

On fresh Ubuntu-15.10 (Desktop) you must install the following packages to compile the Haskell IDE leksah.

$ sudo apt-get-install ghc ghc-testsuite cabal-install libgtk-3-dev libgtksourceview-3.0-dev alex happy libwebkitgtk-3.0-devlibghc-quickcheck-instances-dev doctest libghc-doctest-dev

https://wiki.haskell.org/Gtk2Hs/Installation
https://github.com/leksah/leksah/wiki/Getting-started-with-Leksah
$ mkdir -p ${HOME}/build/leksah
$ cd build/leksah
$ cabal sandbox init
$ cabal update
$ cabal install gtk2hs-buildtools
$ cabal install leksah

In case of cabal error messages please execute cabal in verbose mode to get to know the reason for the error
$ cabal install -v leksah

Finally leksah has been installed to the user specific sandbox  "${HOME}/build/leksah/.cabal-sandbox"  

Leksah is being started using the following command:

$ PATH="$PATH:${HOME}/build/leksah/.cabal-sandbox/bin" ${HOME}/build/leksah/.cabal-sandbox/bin/leksah
Starting up first time, Leksah will download and pre-compile some packages of Haskell. This may take some minutes.

Anniversary coming close: 
Almost 5 years ago I deployed  Android on the SmartQ7 tablet first time :)

https://skednet.wordpress.com/2010/04/09/qdroid-2-0-on-smartq7/

Lock/Unlock Icons for Encrypted Content/Devices

Hi, I am wondering why a mechanical old fashioned lock is used as icon to illustrate encrypted content. Thinking about this the following icons came into my mind, representing locked/protected data or unlocked/accessible data within a container. Maybe this icon will find its way into future software ;)

Howto verify all files of first directory hierarchy reside somewhere in second hierarchy.

Imagine, you took a huge bunch of files residing in one directory subtree and you re-arranged them in a new directory hierarchy and now you want to prevent loss of any file.

The following command will read all filenames from ORIGINDIR directory and search for the filename in destination directory DESTDIR subtree. If the filename is not found, print it to console:
 
find ORIGINDIR -type f  | while read ENTRY ; do case `find DESTDIR  -name  $(basename $ENTRY) -print -quit` in '') echo "? $ENTRY" ;; *) echo -n "" ;; esac ; done

Granting Wireshark privileged capabilities

If you want to run wireshark as normal user (not root), the following capabilities should be set, so that wireshark can access the required socket capabilities:


sudo addgroup -system wireshark
sudo chown root:wireshark /usr/bin/dumpcap 
sudo setcap cap_net_raw,cap_net_admin=eip /usr/bin/dumpcap 
sudo usermod -a -G wireshark YOUR_USER_NAME

Moving to frehberg.wordpress.com

This blog continues at http://frehberg.wordpress.com

Alice Mobile no voice-forward to Peru|US

Der Deutsche DSL/Mobilfunkanbieter Alice unterbindet Anrufweiterleitung in andere Länder wie Peru oder USA. beim Versuch erhalte ich "Nicht erlaubt" als Statusmeldung. Das behindert wirklich und ist eine echte Schikane. Bei Vodafone hatte ich niemals Schwierigkeiten, Anrufe auf ausländische Nummern weiterzuleiten.