Installing veewee on Debian sid

# apt-get install ruby-nokogiri libxml2-dev
# gem install veewee

Useful LaTeX packages and their main commands

setspace — set space between lines
- \singlespacing
- \onehalfspacing
- \doublespacing

textpos — absolute positioning of text on the page
- \textbox

geometry — flexible and complete interface to document dimensions
enumitem — Control layout of itemize, enumerate, description
titlesec — Select alternative section titles
titletoc — alternative headings for toc/lof/lot (better than fancyhdr)
listings — typeset source code listings using LaTeX
versions — optionally omit pieces of text
acronym — expand acronyms at least once
crop — support for cropmarks
hyperref — extensive support for hypertext in LaTeX
multicol — intermix single and multiple columns
tocbibind — add bibliography/index/contents to Table of Contents
caption / caption2 — customising captions in floating environments
xcolor — driver-independent color extensions for LATEX and pdfLaTeX

[under construction]

Arrancar grub en un equipo con UEFI

Suponiendo que acabáis de instalar una Debian o que, aunque ya la tenías funcionando, w8 ha hecho de las suyas, os veis en una situación en la que no tenéis grub y lo que es peor, ni siquiera podéis arrancar vuestra Debian desde el menú de arranque. En este caso, lo que hay que hacer es lo siguiente:

Keep repeating a command until it fails

That may be useful to make some kind of stress testing or to “ensure” the command is doing right.

Pretty simple:

$ while ./command; do true; done

Autenticación básica en IceGrid

Esta receta muestra cómo proporciona, de una forma sencilla, un mecanismo de autenticación a IceGrid.

Fixing damaged /var/lib/dpkg/available

Sometimes the file /var/lib/dpkg/available is corrupted. When you use the package managing tools you get messages similar to these:

dpkg: warning: parsing file '/var/lib/dpkg/available' near line 1128 package 'dash':
 missing description
dpkg: warning: parsing file '/var/lib/dpkg/available' near line 2687 package 'login':
 missing description

Usually this is not a big issue but it may be annoying. To fix it, just execute next commands:

# mv /var/lib/dpkg/available /root/
# touch /var/lib/dpkg/available
# sh -c 'for i in /var/lib/apt/lists/*_Packages; do dpkg --merge-avail "$i"; done'

Seen at http://askubuntu.com/questions/109994/dpkg-error-parsing-file-var-lib-dpkg-status-near-line-6449

Reading a properties file with augeas

augeas is a command line generic tool to manage configuration text files. augeas comes with many “lenses”. The lenses are files that specify rules to read and write each kind of file. This is a very good to for scripting or automatic configuration management (like puppet does).

Fine-grain sudo

sudo lets a user run commands as she was a different user (usually root). The common configuration of sudo requests your password before run the command. As that is annoying, you may be tempted to write something like this in your /etc/sudoers:

john   ALL = ALL, NOPASSWD: APT

But this may be a big security issue…

git: removing files from history

That deletes the given files from all the changesets along all the repository history, as they never were commited.

It is not a very friendly command (it’s the git style!), but at least it can be done.

$ git filter-branch --index-filter 'git rm -r --cached --ignore-unmatch <file/dir>' --prune-empty --tag-name-filter cat -- --all
$ rm -rf .git/refs/original
$ git reflog expire --expire=now --all
$ git gc --prune=now
$ git gc --aggressive --prune=now
$ git push --force

Far as I know this is not possible with mercurial

References

http://stackoverflow.com/questions/5563564/remove-files-from-git-repo-completely
https://help.github.com/articles/remove-sensitive-data

Compacting .vmdk virtual disk with VirtualBox

VirtualBox is able to compact (reduce the size) .vdi images, but it is not possible with .vmdk disk images. So…

recipe	tale
new	cooking
challenge	opinion
enquiry	script
art	event
offer	quote
humor

networking	Python
embedded	Arco
linux (the kernel of course)	Molinux
MySQL	VCS
Debian-devel	security
Debian	GNESIS
ripping	drivers
emacs	gstreamer
gnome	ocio
sugarfree	scapy
multimedia	gtk
shell	Ice
NDS	graphics
uclmwifi	proselitism
C++	patterns
Hurd	Oreto
ceslcam	LaTeX
mercurial	platanada
Chumby	Java
devel	INGSOFT
blender	android
git	sysadm
jekyll	drupal
pdf	doublex
agile	debian
puppet	printer
virtualbox	sudo
augeas	latex
veewee	vagrant
nautilus	Ogre3D
schroot	apt-mirror
cron	ElasticSearch
logstash	kibana
GPG	pgp
bash	eduroam
tmux	docker
systemd	PostgreSQL
ffmpeg	dig
DNS

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