Copy a set of files present in a directory in another directory conserving the structure

To want to copy only the cuts.csv files from the processed directory to the processed_SD one, conserving the sub-directory architecture :

# In the processed directory
find */interval_0[0-9]/cuts.csv -type f | xargs -i cp "{}" ../processed_SD/ --parents`

/processed     --------------->    /processed_SD
|
+-- arrow
|    |
|    +-- interval_00
|    |   |
|    |   +-- image.jpg
|    |   +-- cuts.csv
|    |
|    +-- interval_01
|    |   |
|    |   +-- cuts.csv
|    |
|    :
|
+-- game_of_thrones
     |
     +-- interval_00
     |   |
     |   +-- cuts.csv
     :

Quand on écrit une commande, on peut en rediriger la sortie standard vers un fichier : commande > file ou à la fin d’un fichier : commande >> file

Si on souhaite en plus logger dans ce fichier les erreurs de commande, faire ceci : commande > file 2>&1. Le flux 1 est le standard, le flux 2 est l’erreur, et 2>&1 renvoie 2 vers le pointeur de 1.

Particulièrement utile pour une commande cron qui peut être amenée à bugger, cas où c’est le seul moyen de voir l’output d’erreur.

In Vim, the <ESC> and <CTRL> keys are hard to reach, but used a lot.

New way to get out Insert mode

Change the <ESC> key to jk. It allows efficient escape from Insert mode, as your fingers should already be on j and k keyboard keys.

In ~/.vimrc:

inoremap jk <ESC>

Remap <CAPS LOCK> to <CTRL>

The <CTRL> key is hard to reach and the <CAPS LOCK> key is useless. We have to remap at the system level. For Ubuntu 14.04, modify the /etc/default/keyboard file with replacing:

XKBOPTIONS=“”

with:

XKBOPTIONS=“ctrl:nocaps”

We then have to restart the computer.
(cf. original post)

Problem : In ipython, the reload of the import is not automatically done when launching new script or launching new command

One simple solution is just to run the 2 following commands :

%load_ext autoreload
autoreload 2

If you want to make this change permanently, you can write in your ipython profile (find it with ipython locate). For instance, if the result of ipython locate is “~/.ipython”, you can edit “~/.ipython/profile_default/ipython_config.py”:

c = get_config()
c.InteractiveShellApp.extensions = ['autoreload']
c.InteractiveShellApp.exec_lines = ['%autoreload 2']

Problem : It can be cool to have some syntax color highlight when quickly checking the content of a file with “cat” Goal : We are going to use pigmentize and create an alias called “pcat” (pygmentized cat)

Setup :

• install pigmentize

  sudo apt-get install python-pygments
  

• open your bashrc and add the line “alias pcat=’pygmentize -g’”
• source your bashrc (source ~/.bashrc)
• you can now use the following cmd : “pcat filename”