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

sync Frontdoor to dropbox

Two stages,
1. setup rclone with dropbox
2. setup incrontab with the command:
incrontab -e

and add this line:
/home/pi/webcam    IN_CREATE    /usr/bin/rclone sync /home/pi/webcam mydropbox:webcam/FrontDoor

core_version_requirement

 cf :https://www.drupal.org/node/3070687  

This version is not compatible with Drupal 9.0.0 and should be replaced.

Machine name: fahp_synthesis

Requires:

• Drupal Core (8.x) (incompatible with version 9.0.0)

Edit my_custom_module.info.yml:

change

core: 8.x

to

core: 8.x
core_version_requirement: ^8 || ^9

for drupal 9.x

drupal_set_message deprecated in drupal 9

Create a function:

//---------------------------------------------------------
function drupal_set_message($message = NULL)
    {
    $messenger = \Drupal::messenger();
    if (isset($message)){
      $messenger->addMessage($message,'status',FALSE);    }
    }
//---------------------------------------------------------

Replace

 drupal_set_message(array(
        '#type' => 'markup',
        '#markup' => $tle));

with these lines:

 $this->drupal_set_message(array(
       '#type' => 'markup',
       '#markup' => $tle));

drupal 9 db_query deprecated

cf: https://www.drupal.org/project/advban/issues/3090341

Replace db_query with \Drupal::database()->query, e.g.

//$res=db_query($sql) or die("Error: $sql");
$res=Database::getConnection()->query($sql) or die("Error: $sql");

Use the script to change:


#!/bin/bash
find ./ -type f -exec sed -i 's+db_query(+Database::getConnection()->query(+g' {} \;

Create drupal 9 with composer

$ mkdir /home/chiao/public_html/drupal9 

$ composer create-project drupal/recommended-project:~9.0.0\ 

  /home/chiao/public_html/drupal9

Go to /home/chiao/public_html/drupal9/web/sites.

 Copy files to drupal9:
    Custom themes go to /home/chiao/public_html/drupal9/web/themes/custom/
    Custom modules go to /home/chiao/public_html/drupal9/web/modules/custom/
    Libraries go to /home/chiao/public_html/drupal9/web/libraries/
    Your uploaded files and images go to /home/chiao/public_html/drupal9/web/sites/default/files/ 

Copy (using sudo cp -av) the following files and directories to new site:

1. sites/default/settings.php 

2. sites/default/settings.local.php

3. sites/default/files/config_5cKxplPBXz7CfVTT9KjhZ3fJkIg1ygQ2hTdYEM64PUZQUPSy94TTCTcHuJ16-cOW_918dZ1kpw/   asdfsd

4. sites/development.services.yml 

$  cd /home/chiao/public_html/drupal9
$  composer install
All done for creating new drupal 9.
 

vmware boot with usd disk

https://www.virten.net/2014/12/howto-usb-boot-a-vm-in-vmware-workstation-11/

tex-common error

sudo mv /etc/texmf /etc/texmf_old
sudo apt install lyx tex-common

Create new drupal from old drupal using composer

(For updating 8.9.x in kpci7, cf. https://kpchiaoo.blogspot.com/2018/09/update-drupal.html

 

When using:

composer update --dry-run "drupal/*"

This should show any available minor or patch update, however, my site didn't show any minor version for drupal.

So I follow this: https://www.drupal.org/docs/8/install/add-composer-to-an-existing-site
to create a new site and to transfer my old files to the new site.

1. Create a new drupal site, drupal_new:
cd /home/chiao/public_html
composer create-project drupal/recommended-project:~8.8.0 drupal_new --stability dev --no-interaction

2. Copy files to drupal_new:

    Custom themes go to /var/www/sites/new_html/web/themes/custom/

    Custom modules go to /var/www/sites/new_html/web/modules/custom/

    Libraries go to /var/www/sites/new_html/web/libraries/

    Your uploaded files and images go to /var/www/sites/new_html/web/sites/default/files/
3. Copy sites files:
cd /home/chiao/public_html/drupal_new/web/sites/default
sudo cp -av ~/public_html/drupal/sites/default/settings.php .
sudo cp -av ~/public_html/drupal/sites/default/settings.local.php .
sudo cp -av ~/public_html/drupal/sites/default/files/config_5cKxplPBXz7CfVTT9KjhZ3fJkIg1ygQ2hTdYEM64PUZQUPSy94TTCTcHuJ16-cOW_918dZ1kpw/ files/

cd /home/chiao/public_html/drupal_new/web/sites/
sudo cp -av ~/public_html/drupal/sites/development.services.yml .

change owner, www-data:
sudo chown -R www-data.www-data files/ settings.*

4. Edit composer.json in your new project root (e.g., /var/www/sites/new_html) and copy the list of packages from your old composer.json's "require" and "require-dev" sections to the new composer.jsonfile.

5. rm  ~/public_html/drupal_new/composer.lock
composer install

6. All done for creating new druapl.

7. cd  ~/public_html/drupal_new/
drush state:set system.maintenance_mode 1
drush cache-clear drush
composer update drupal/core-recommended --with-dependencies
drush updatedb
drush cache-clear drush
drush state:set system.maintenance_mode 0
drush cache:rebuild

drupal, All links redirect to Homepage

sudo a2enmod rewrite
sudo systemctl restart apache2

Increase mp4 volume using FFMPEG

cf: https://blog.programster.org/change-audio-level-in-video

ffmpeg -i my.mp4 -vcodec copy -af "volume=25dB" my_25dB.mp4

Or,

for i in *.mp4; do \
ffmpeg -i $i  -vcodec \
copy -af "volume=25dB" \
${i%.*}_25dB.mp4 ; \
done

Thunderbird AU calendar not working and not shown

Delete the 'AU' calender, and create it again.

drupal 批次設定使用者角色 (role)

例如需要改所有學號開頭為 AA070xxxx 的學生為 QuantitativeMethods:
首先批次選取這些學生，在下列空格中只要鍵入前5碼即可，例如:

包含使用者名稱或電子郵件

然後在「動作」中點選「Add the QuantitativeMethods role to the selected user(s)

Pulse Secure installation

1. Download the Pulse Secure client:
   https://its.wpi.edu/software/259/pulse-secure
   https://drive.narlabs.org.tw/navigate/s/6C30CA2A0C7A47E48C2D4034C4A55630GUY
   Pulse Secure Installer (Linux 64-bit)Ubuntu
   
2. sudo dpkg --install pulse-9.1R3.x86_64.deb
3. sudo apt-get install libwebkitgtk-1.0-0
4. sudo apt-get install libproxy1-plugin-webkit
5. /usr/local/pulse/pulseUi
6. Add new connection for AU using URL:
   https://au.twaren.net/au/staff

CPU REAL TIME frequency watching

watch -n1 "lscpu | grep MHz | awk '{print $1}'";

cf: https://askubuntu.com/questions/916382/ubuntu-get-actual-current-cpu-clock-speed

replace xz with 7z with password

#!/bin/bash

for i in /BACKUP/kpchiao9600k/20200225_Ubuntu_18.04.4_LTS/*; do
    xzcat $i | 7z a -mx=9 -mmt=4 -p -si "$(basename "$i" .tar.xz)_pwd_bsun.tar.7z"
done

#
# Decompress with the following command followed by the password.
#   7z x -so boot_efi_2020_02_25_pwd_bsun.tar.7z | tar tvf -
# Just key in the password, no prompt will be shown.

setup permission for mysqldump

1. Create ~/.my.cnf, add these lines:
   

   [mysqldump]
   user=student
   password=student
   chmod 0600 ~/.my.cnf

2. Inside phpmyadmin, set 'Select' and 'LOCK TABLES' permission to database 'drupal' for 'student' as the following image:
   
   
   
3. Then, dump drupal with the command without username and password:
   

    mysqldump drupal > kpchiao9600k_drupal.sql

   or
   

    mysqldump -B drupal > kpchiao9600k_drupal.sql

   The -B option will add the create database and use datatebase lines into dump file as:
   

   CREATE DATABASE /*!32312 IF NOT EXISTS*/ `drupal` /*!40100 DEFAULT CHARACTER SET latin1 */;
   
   USE `drupal`;

   
   
   
   
   

Enable compiz 3d on unity

compiz --replace

Install nvidia driver ubuntu

1. ubuntu-drivers devices
   e.g. nvidia-driver-435 - distro non-free recommended
   

2. sudo ubuntu-drivers autoinstall or

   
   

   sudo ubuntu-drivers nvidia-driver-435 

   
   

3. reboot