Install thunerlink at https://github.com/mikehardy/thunderlink
$ thunderbird -thunderlink thunderlink://messageid=<message id>
How to search specific email message in Thunderbird
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How to convert a pdf file into sequentially numbered images and animated gif
pdftoppm -rx 300 -ry 300 -png myPDFfile.pdf img
pdftoppm -rx <dpi-x> -ry <dpi-y> -<image-format> <input-pdf-file> <image-file-pre-fix>- The above command in Linux will convert each page of the pdf file “myPDFfile.pdf” into sequentially numbered png files of the file names starting with “img” such as
img-01.png
img-02.png
… - Options “-rx 300 -ry 300” means that 300 dpi is used for both x and y coordinates.
convert -delay 3000 -loop 0 img*.png myimage.gif
convert -delay <time-interval> -loop <loop-number> <imagge-file-prefix>*.png <output-gif-file>
- The above command read all the png files, starting with “img” and convert the image files into a single animated gif file, myimage.gif.
- The “-delay” option indicate the interval between two images in millisecond. So, “-delay 3000” means 3 seconds between two slide images.
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Output and Error redirect
$ command 2> /dev/null 1>&2
which is to
- first redirects stderr to /dev/null and then
- redirects stdout to point to the same place stderr is currently pointing to.
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How to include multiple authors with different affiliations in LaTex
\usepackage{authblk}
\author[1]{Author A\thanks{A.A@university.edu}}
\author[1]{Author B\thanks{B.B@university.edu}}
\author[1]{Author C\thanks{C.C@university.edu}}
\author[2]{Author D\thanks{D.D@university.edu}}
\author[2]{Author E\thanks{E.E@university.edu}}
\affil[1]{Department of Computer Science, \LaTeX\ University}
\affil[2]{Department of Mechanical Engineering, \LaTeX\ University}
\renewcommand\Authands{ and }
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LaTex Appendix in Elsevier template
\appendix \setcounter{figure}{0} \renewcommand\thefigure{A.\arabic{figure}} \addcontentsline{toc}{section}{Appendix} %\counterwithin{figure}{section} %\numberwithin{equation}{section} %\numberwithin{figure}{section} %\numberwithin{table}{section}
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Network command on Ubuntu
to add new gateway
route add default gw 192.168.0.1to see the network adapter information
nmcli dev show eth0
to restart network
./init.d/networking restartto see dns stauts
systemd-resolve --status
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how to install wordpress and mysql
Sat Nov 23 13:52:24 HST 2019
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reconstructPar background script
#!/bin/bash
#+TITLE: check-reconstructPar
#+File: check-reconstructPar.sh
#+Date: Sat Nov 9 12:23:24 HST 2019
#+Author: Albert S. Kim, albertsk@hawaii.edu
# Required package: bc
#
. ~/.bashrc
. /home/albertsk/OpenFOAM/OpenFOAM-v1906/etc/bashrc
. $WM_PROJECT_DIR/bin/tools/CleanFunctions
. $WM_PROJECT_DIR/bin/tools/RunFunctions
testProcessorNum=0
processor=`ls processor${testProcessorNum} | grep -v [a-zA-Z] | tail -n 1`
latestPWD=`ls ./ | grep -v [a-zA-Z] | tail -n 1`
Tprocessor=$(echo $processor + 0 | bc)
TlatestPWD=$(echo $latestPWD + 0 | bc)
#
runMessage=$(grep Time log.interFoam2 | tail -n -1)
echo "The running time is" ${runMessage}
echo "The lastest time in processor${testProcessorNum} is ${processor}. "
echo "The lastest time in this directory is ${latestPWD}."
dateTime=`date +"%Y-%m-%d-%H-%M-%S-%p"`
if [ "$Tprocessor" != "$TlatestPWD" ]
then
. /home/albertsk/OpenFOAM/OpenFOAM-v1906/etc/bashrc
. $WM_PROJECT_DIR/bin/tools/CleanFunctions
. $WM_PROJECT_DIR/bin/tools/RunFunctions
echo reconstructPar -time $processor
mv -f log.reconstructPar log.reconstructPar.$dateTime
mv -f log.reconstructPar.log .reconstructPar.$dateTime
reconstructPar -time $processor
mv -f log.reconstructPar log.reconstructPar.$dateTime
else
echo "This case is laready reconstructed. reconstructPar not necessary!"
fi
exit 0
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Alternative to ESC in vim editor
If you have an American English keyboard, pressing Ctrl-[ (control plus left square bracket) is equivalent to pressing Esc. This provides an easy way to exit from insert mode.
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Computational Environmental Physics Lab (CEPL) 