[Bash] extractBib: extract bib items from a source bibtex database for a given tex file

#!/bin/bash # extract bib items from a source bibtex database for a given tex file # usage: #          extractBib tex-file bibtex-database output-bibtex-file # e.g., #          extractBib mypaper.tex mybibtexdatabase.bib mypaper.bib # http://scriptdemo.blogspot.com function getkeys() {    texfile=$1    mykeys=`grep "cite.*{.*}" ${texfile} | sed -e 's/\ //g' | awk '{for (i=1; i<=NF;i++) {if ($i ~ /cite/) {print $i}}}' | sed -e 's/\}/\n/g' | awk -F\{ '{print $2}' | sed -e 's/\,/\n/g' | sed '/^[\ ]*[\ ]*$/d' | sort | uniq | sed '/^\\\\/d' | sed '/:/d'`     echo ${mykeys} } if [ $# -eq 3 ]; then    texfile=$1; bibfile=$2; outfile=$3 elif [ $# -eq 2 ]; then    texfile=$1; bibfile=$2; outfile="extractbib_"$1 else    echo "usage:"    echo "          extractBib tex-file bibtex-database output-bibtex-file"    exit fi # make sure no overwrite [ -e ${outfile} ] && echo "${outfile} exists alreay! exit" && exit allkeys=`getkeys ${texfile}` if [ ${#allkeys[*]} -ne 0 ]; then    touch ${outfile}    for eachkey in ${allkeys[*]}    do        #echo ${eachkey}        sed -ne "/${eachkey}/,/^[\ ]*\}$/p" ${bibfile} >> ${outfile}    done fi

[Matlab] show a normal random heart

% Just for fun, not really useful.... % @ http://scriptdemo.blogspot.com  clear; close all; r=0.618; n=10000; re=sqrt(1-r*r); x=normrnd(0,1,n,1); y=x*r+normrnd(0,1,n,1)*re;y(x<0)=-y(x<0); plot(x,y,'o','markerEdgeColor',[1 0 1],'markerFaceColor','none'); axis equal tight off; set(gcf,'MenuBar','none','color','w')

[Bash] change current workspace by calling a script function

# to change current path using a customized script function # instead of using alias. Need put this function in .bashrc #    e.g., #            mycd ex1 ==> cd ~/scripttest/ex1 #            mycd ex2 ==> cd ~/scripttest/ex2 #            mycd eX2 ==> cd ~/scripttest/ex2 #   @ http://scriptdemo.blogspot.com  function mycd (){  if [ $# -ne 1 ]; then     echo "Usage:"     echo " mycd foldername"  else     targetF=`echo $1 | awk '{print tolower($1)}'`     targetP=${HOME}/scripttest/${targetF}     if [ -d ${targetP} ]; then        eval "cd ${targetP}"     else        echo "${targetP} does not exist!"     fi     unset targetF  fi }