Microsoft Surface 2 Pro

Introduction

I always take a portable with me on vacations, trips, visits, etc. One time I did not take anything with me turned to be one of the worst-vacation-ever, so I decided that I’d better take something with me and not use it than spoil another vacation in desperate search for something to work on :). Anyway, I already went through an old BSD-powered subnotebook, a black MacBook (ancient by modern standards, but still serving happily as a Skype station for my wife :)), an iPad (well, not really working machine lacking command line and any sign of development environment, but at least I was able to read/take notes/make kids happy with cartoons :)), Nexus 7 (when iPad went broken) and finally the last-of-the-breed Acer Aspire One D270 Ubuntu-powered netbook. I deliberately spared my MacBook Pro from travel for several reasons, but netbook proved to be a less versatile option, prompting to get a tablet along. Spoiled me. On one of the last business trips I had a business notebook (owned by client), my own one for other projects (I do not mix businesses) and a tablet for on the way. Well. That proved to be an overkill even for a week. So it was time to look for something different. But what?..
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Adding basic logging to your Python script

Whether you like it or not, but there are many situations when you need to add logging information. It is easy to start with some print statements, but what if at certain point you want to put this information to a file? Redirecting output to a file will result in all-or-nothing situation since the contents of the file will be only visible at the end of execution. A more flexible and proper solution would be using a proper logging module.

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Windows batch files arguments

Since Windows happen to be the platform of choice of my clients for business needs I tend to write also scripts for Windows. Many times I just create small batch files to mimic Unix commands like ls and ll as I forget to type dir instead. Anyway, many times I just want to pass any parameters provided to a batch file to the callee, and I used to have something like

@dir %1 %2 %3

Well, there should be a better way, and there is

@dir %*

and just in case you wander what other options are supported (and there are surprisingly many!), check out

call /?

in Windows command prompt, aka cme.exe.

Enjoy!

Moving to a new server: Call to undefined function: stripos() in /home/WP-LC/wp-lc.php on line 2

Moving to a new server is always a challenge. This time I wanted to have a proper version of Python for backend, but the current server only had version 2.4(!). As somebody put it "Wow, that’s ancient!". Anyway, as I wanted to have Django running my application I needed something at least 2.6’ish. I have asked for a new server and after some attempts my hosting provider (Lunarpages) provided me with one. OK, PHP and MySQL seem to be also OK (think of WordPress, etc), so I am settled. Right…

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Syntax highlight in vim

Although not being addicted to vim I do happen to use it on a regular basis as it is available on virtually all environments I do meaningful work with :). To get it a bit fancier you can add the following to your ~/.vimrc.

vim python coloring

syntax enable
set background=dark
colorscheme solarized 
set tabstop=4 
set shiftwidth=4 
set expandtab

Download and copy corresponding theme like solarized.vim to ~/.vim/colors

:wq

Small update
If you get annoying A/B/C/D characters when pressing arrow buttons either change .vimrc to get

set nocp

or type it in the vim prompt

:set nocp

Enjoy!

Upgrade Ubuntu server with boot partition full

At certain point my small silent server needed an extra package, but running apt-get only gave me errors. Digging further I found that my /boot partition (default Ubuntu server setup) was running out of disk space. After manually deleting old versions of images I finally got space, but that didn’t fix broken packages, e.g.:

$ sudo apt-get -f install
dpkg: dependency problems prevent configuration of linux-server:
linux-server depends on linux-image-server (= 3.2.0.53.63); however:
Version of linux-image-server on system is 3.2.0.58.69.
linux-server depends on linux-headers-server (= 3.2.0.53.63); however:
Version of linux-headers-server on system is 3.2.0.58.69.
dpkg: error processing linux-server (--configure):
dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
Errors were encountered while processing:
linux-server
E: Sub-process /usr/bin/dpkg returned an error code (1)

The only fix I have found was downloading and installing the missing package manually:

$ wget https://launchpad.net/ubuntu/+archive/primary/+files/linux-server_3.2.0.58.69_amd64.deb
$ sudo dpkg -i linux-server_3.2.0.58.69_amd64.deb

Enjoy!

C++11 vs Python – not quite there yet

Although not exactly fair, while reading the C++ Primer book to refresh my C++11 knowledge during Christmas break (OK, after kids went asleep), I came across the example given for the new C++11 features (lambdas), strings and STL usage in chapter 16, which does nothing more than counting words in a text file. This is a rather classical example and I happen to have it as a part of the Python course I give to my colleagues. Of course I couldn’t hold myself from comparing C++11 and Python as C++11 actually tries to get higher level and closer to languages like Python. Here is what I’ve got.
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