As the doctor gone rogue

October 29, 2017

Restore Word Document Template Normal.dotm

Filed under: bash — hypotheses @ 9:48 am

Sanny wrote on

From this thread in Apple Exchange, the folder’s location has changed for Office for Mac 2016. It’s now located in

~/Library/Group Containers/UBF8T346G9.Office/User Content/Templates

For Office for Mac 2011 or if you upgraded from this edition to 2016, browse to this location

~/Library/Application Support/Microsoft/Office/User Templates/My Templates

In Windows, I can delete the file normal.dotm to reset it. So you should try doing so in your Mac. You need first to close Word before deleting.


August 31, 2017

Stop Google Chrome from Opening at Log-in [MacOS]

Filed under: bash — hypotheses @ 11:49 pm

Normally, if you pinned an app to your “Dock” [the icons at the bottom of the screen], you can simply right-click the app icon and choose > Options > Open at log-in to change this setting.

However, Google Chrome, for some reasons, at the moment, does not have this option checked, but still loaded automatically at log-in.

To disable this, on MacOS Seirra, (also true from Lion on wards), Check the System Preferences > Users & Groups > [your username] > Login Items.

You might see “Google Chrome” in the list of Login Items. By removing it from the list, Chrome should not automatically be loaded anymore.

February 11, 2017

Bitvise X11 forwarding problem

Filed under: bash, SysAdmin, ubuntu — Tags: , , — hypotheses @ 12:00 am

You may have a problem trying to forward X11 from your Linux server through a terminal in Windows. I use Bitvise as the ssh client as it also provides the interface for sftp to download/upload the files. Not that using command line scp or sftp is not efficient, but in Windows you may have to install those tools separately.

Since I was trying to avoid installing Cygwin initially, Cygwin terminal wasn’t what I initially consider. Therefore, I went ahead and install Bitvise ssh client (instead of putty), which actually turns out to be quite good. The only problem (at least now) is when trying to forward GUI from the server with X11 forwarding, it failed miserably.

  • I’ve tried setting up bitvise in the X11 forward.
  • Installed X11-server from Cygwin (finally T_T).
  • But X11 forwarding still did not work. I got the error message below.

Failed to open channel for X11 forwarding from [::1]:47396 to Error connecting to X11 server: FlowSocketConnector: Failed to connect to target address. Windows error 10061: No connection could be made because the target machine actively refused it.

I kind of have an idea that this is something to do with Windows Firewall, which does not allow a specific port to listen to an incoming connection. But I haven’t quite figured out what to do. It is actually described on the bitvise page, but I guess I haven’t quite read the whole thing.

In short, after install cygwin X11 server, make sure to run the command below to fix the firewall permission. 

C:\cygwin64\bin\XWin -listen tcp -multiwindow


February 6, 2017

Backing up FreeNAS to Amazon S3

Filed under: bash — hypotheses @ 7:59 am

Going through the AWS tutorial about creating File GateWay on my own is not exactly a walk in the park. Although I managed to install awscli and configured the basic requirement, there’s a missing gap that I haven’t quite figured out. This saves me lots of time trying to figure out how I can back up data already live on ZFS FreeNas to AmazonS3.

aws s3 sync /mnt/data/ s3://mybucket

What’s left to figure out next would be how to get all the files out when I need it, and how much it would cost, how to save those cost, etc. For the later part, I guess having AWS free credits does help a lot.

Take a look at the full guide following the link below.

ZFS is excellent at storing all your data safely but “there are still lots of potential ways for your data to die, and you still need to back up your pool. Period. PERIOD!” The process …

Source: Backing up FreeNAS to Amazon S3

January 22, 2017

Running analysis in docker container

Filed under: bash, docker — Tags: , , , — hypotheses @ 6:41 pm

There are generally 4 steps to create an analytics environment on your server that will be separate from the rest of the system. By running your analysis within a container, it might reduce the risk of crashing the server because you might have used up all the resouce and cause the server to freeze up.

  1. Install virtualbox (to create a docker machine)

  2. Install docker-machine

  3. Create a docker-machine this will be the machine to run your container

  4. Map your command to run in the container. Following the kaggle/python tutorial.

Install virtualbox-qt

sudo apt-get install virtualbox-qt

Install docker-machine

curl -L`uname -s-uname -m` > /usr/local/bin/docker-machine && \ chmod +x /usr/local/bin/docker-machine

create a docker-machine

This will create a separate docker machine called docker2

docker-machine create -d virtualbox --virtualbox-disk-size "100000" --virtualbox-cpu-count "8" --virtualbox-memory "32092" docker2
docker-machine start docker2

We then need to specify a new destination where docker container will run, i.e. on docker2

eval $(docker-machine env docker2)

See <; for more info

run kaggle/python

You’re now at a point where you can run stuff in the container. Here’s an extra step that will make it super easy: put these lines in your .bashrc file (or the Windows equivalent)

docker run -v $PWD:/tmp/working -w=/tmp/working --rm -it kaggle/python python "$@"
ikpython() {
docker run -v $PWD:/tmp/working -w=/tmp/working --rm -it kaggle/python ipython
kjupyter() {
(sleep 3 && open "http://$(docker-machine ip docker2):8888")&
docker run -v $PWD:/tmp/working -w=/tmp/working -p 8888:8888 --rm -it kaggle/python jupyter notebook --no-browser --ip="*" --notebook-dir=/tmp/working



December 2, 2016

Installing vcftools on MacOS with homebrew

Filed under: bash — hypotheses @ 8:49 am

Life just get a lost easier if you want to install vcftools on MacOS.

Once homebrew is installed (see, you can simply install vcftools in one line.

brew install homebrew/science/vcftools

October 21, 2016

Installing Oracle Java8 in 3 lines

Filed under: bash — hypotheses @ 10:37 am


  1. apt-get is installed
  2. You have sudo authority

#add repository from webup8team & install oracle java and set as default

sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-set-default

If you have other java installed previously, you might want to complete remove them first.

sudo apt-get purge openjdk-\*

There's a long description on how to install Oracle Java on WikiHow if you want to install them from scratch.

October 18, 2016

Add/Remove user from a group

Filed under: bash, SysAdmin, ubuntu — hypotheses @ 3:15 am

  • Add a user bhoom to an existing group superman: sudo usermod -A -g superman bhoom
  • remove bhoom from a group superhero: sudo gpasswd -d superhero bhoom
  • Create a new group legends:sudo groupadd legends

October 15, 2016

Find files and listing details on Linux

Filed under: bash, miscellaneous, ubuntu — Tags: , , , , , — hypotheses @ 12:01 pm

One common task that we always have to do relatively often is to find the location of some specific files. Although you may have some clues that those files are located in your current working directory, “.” symbolic link used in the command below, you may have no clue to which sub-folder your files are.


September 8, 2016

value too great for base ?!

Filed under: bash — hypotheses @ 11:11 pm

So, I wrote a script trying to get it to output the previous month as a number with a leading “0”. The problem arrives as bash complains of some errors.

Initially, my script looked like this

MO=$(date '+%m')
P_MONTH=$(printf "%0*d\n" 2 $MO2);

The last line is there so that I still get a numeric month with a leading zero. However, this for some reasons, gave the error “value too great for base”.

After trying to figure out what it actually means, the base here is the numeric base, which bash thinks number with leading “0” is octal.
So, the solution to fix this is to reassure that the ${MO} variable, which is the numeric Month is a base-10 number.

You can achieve this as follow

MO=$(date '+%m');MO=$((10#$MO))
P_MONTH=$(printf "%0*d\n" 2 $MO2);
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