Find empty results of a cluster job

 find dir/ -type f -size 0 -name *.o*

was macht eigentlich der cluster fuer mich?

qstat|grep  "username     r"|wc -l

Transparent Points using Gnuplot and Tikz terminal

Insert this in your tikz drawing generated by gnuplot:

\tikzstyle{every path} = [opacity=.5]
\tikzstyle{every node} = [opacity=1]

Draw nice RNA 2d structures in PGF/TikZ

Vienna package - RNAplot:

RNAplot -o svg

change colours in inkscape if desired

transform inkscape svg to pgf/tikz code:

inkscape2tikz -o output.tex input.svg

change tikz code, e.g. add

\tikzstyle{every node} = [fill=white]

for better readability, and delete
line width = XXX
for standard line width

Remove background rectangle

 \path[draw=white,fill=white,rounded corners=0.0000cm] (0.0000,0.0000) rectangle  (452.0000,452.0000);