Create Reference and citations in word

1. Use JabRef to export MS word xml from bib file, say 110year.xml
2. Inside word, click 參考資料 -> 管理來源 -> 瀏覽，select 110year.xml
   select all on the left, 複製 to the right panel
   
   click 關閉
   
3.  Click 書目，
   

Expand vmware Mac OS disk

1. Expand disk size in vm setting, say to 60GB
2. Inside mac os guest, open disk utility 
3. Select  容器->My29GB - Data. (not My29GB)
4. click 分割 tab 
5. Keyin new size in 大小. The size should be less than 60GB as in step 1. 
6. click 套用
7. Done

 

Use rsync to ssh on custom port

rsync -auvzpP -e 'ssh -p 7922' Fuzzy/Literature/IntuitionisticFuzzyNumber/ chiao@kpcp4.au.edu.tw:/home/chiao/Fuzzy/Literature/IntuitionisticFuzzyNumber

LyX Mathematica with condition

 Put a condition follows the equation:

$Simplify\left[\sqrt{x^2},\left\{-1<x<0\right\}\right]=-x$

$\mathrm{ }$

 

Ubuntu 18.04.4 LTS Hardware Enablement Stack (HWE)

 

sudo apt install --install-recommends linux-generic-hwe-18.04 xserver-xorg-hwe-18.04

set permanent dns

Edit /etc/systemd/resolved.conf, add this line:

DNS=192.168.1.1

or 

DNS=<what-u-want>

 

Then restart ubuntu.

Plural or single noun with multiple adjectives

 cf: https://english.stackexchange.com/questions/221331/plural-or-singular-noun-when-it-refers-to-two-things-in-a-list

The followings are right.

I have a left and a right arm.

I have left and right arms.

Everyone has left and right arms. [This is correct]

The followings are wrong.

I have an old and a new cars.

I have old and new car.

apache2 change document root

https://www.tutorialspoint.com/how-to-change-apache-default-web-root-folder-to-a-new-location-on-ubuntu-16-04 

Do not forget rerun unlocker

If install new version of vmware, do not forget to run unlocker again, otherwise the MacOS (e,g, catalina ) cannot boot.

sudo without password

Disable sudo password for all the members of sudoers group.

sudo visudo and add this line:  

%sudo   ALL=(ALL:ALL) NOPASSWD:ALL

openconnect ssl vpn

sudo apt install openconnect
Run this command:

sudo openconnect https://au.twaren.net/staff --protocol=nc

Repeat duplicate items in legend in Matplotlb jupyter

In unbuntu 18.04 this is not an error, however, it will produce duplicated legend in ubuntu 20.04. According to https://stackoverflow.com/questions/19385639/duplicate-items-in-legend-in-matplotlib, if plot the same line type twice, then it will produce the same lengend for the same line.
Therefore, I have to break the oringial one line into two lines:

    ax.plot(x, yU, Label=i,linewidth=2, dashes=dst,color='black')
    ax.plot(x, yL, linewidth=2, dashes=dst,color='black')
NB, the legend is removed from the second line.

update grub efi from grub pc for gpt uefi

1. make a fat32 partition of size 10M, e.g. /dev/sda1
2. sudo mkdir /boot/efi
3. put this line into /etc/fstab
   UUID=4CA9-C727  /boot/efi       vfat    umask=0077      0       1
4. sudo mount -a
5. purge old grub-pc, e.g.
6. install grub-efi. e.g.  apt install grub-efi
7. sudo update-grub
8. sudo grub-install
9. Done.

Using ubuntu live CD and suppose /mnt/2 contains all the old operation system, say ubuntu 18.04.
cd /mnt/2
mount -B /dev dev
mount -B /dev/pts dev/pts
mount -B /proc proc
mount -B /sys sys
mount -B /run run

cd /

chroot /mnt/2

vim /etc/hosts, add this line:

140.110.240.80 tw.archive.ubuntu.com 

 

To find where efi, say sda2, then

mount /dev/sda2 /boot/efi

apt purge grub-pc

apt update

apt install grub-efi

update-grub
grub-install
exit

umount /mnt/2/dev/pts
umount /mnt/2/dev
umount /mnt/2/proc
umount /mnt/2/sys
umount /mnt/2/run