The standard unix/linux tools for filtering/changing strings (or patterns) in files from the commandline are sed and awk. But what if you want to change strings in-place in the files without the burden of creating new files and replacing the old ones afterwards?
The "perl pie" is a …
Howto install and use lp_solve and its Python extension module as non root on Linux?
Compile and install the lp_solve shared library:
Download lp_solve_5.5.0.10_source.tar.gz from
SourceForge
and untar so you get a directory lp_solve_5.5 with contents.
Enter …
Disclaimer: this entry is mainly a reminder to myself (the stuff you would write on a post-it), but maybe it's useful to someone else.
The subversion server at my work is (currently) only accessible from within the LAN, not directly reachable from the outside evil internet. T his makes it …
With the python module inspect, one can inspect (not kidding) the
run-time python stack. Among other things, this makes it possible to
get the name of the current function or callers.
Handy for logging or debugging purposes. A simple script to illustrate:
import inspect
# functions
def whoami():
return inspect.stack …Note to self: short list of useful options of wget for recursive downloading of dynamic (PHP, ASP, ...) webpages (because wget's man page is too long):
--no-clobber: do not redownload pages that already exist locally.--html-extension: append extension .html to webpages of which the URL does not end on .html or …Almost two years ago, UGent implemented anti spam measures that reduced the amount of spam messages in my UGent email account considerably from 20 something each day to zero. But recently the daily amount of spam that reaches my inbox is growing again in an unfavorable way:
For writing with LaTeX I prefer using LyX because it hides the ugliness of LaTeX source code behind a pseudo-WYSIWYG frontend (the developers call it WYSIWYM: what you see is what you mean ). Including mathematical expressions, however, is very LaTeX minded and comfortable: you type LaTeX math constructs (stuff with …
Making a video from a set of frames can be done with transcode as follows. Disclaimer: this is mainly a reminder to myself, based on these instructions for making animations from frames, with some extra's.
First make a file with the filenames of the individual frames (in the right order …
I had some difficulties in Ubuntu with installing a new spell check dictionary for my mail client Thunderbird. My native language is Dutch (Nederlands) and writing Dutch with a English spell checker active is not very interesting. I tried the methods explained at http://www.mozilla.com/thunderbird/dictionaries.html …