1. sudo apt install aptitude qttools5-dev libqscintilla2-qt5-dev f2c
gfortran libblas-dev liblapack-dev libpcre3-dev libreadline-dev
net-tools openssh-server krusader gnome-tweaks oxygen-icon-theme
xul-ext-lightning kate tasksel dvipng
texlive-latex-extra texlive-fonts-recommended libcanberra-gtk-module
kde-cli-tools keditbookmarks guake synaptic kio-extras okular
latex-cjk-chinese texlive-lang-cjk samba nfs-common
nfs-kernel-server gparted lftp texlive texlive-extra-utils
texlive-font-utils texlive-fonts-extra lynx jupyter python3-numpy python3-matplotlib python3-scipy texlive-publishers classicmenu-indicator texlive-fonts-extra deborphan texlive-science kbibtex xfig ethool htop gimp gimp-plugin-registry gimp-data
2. 在「 軟體與更新」中，設定源碼
3. sudo apt-get build-dep lyx
4. sudo apt purge lyx lyx-common
5. cd /download1/LyX/lyx-2.3.0
./configure --enable-qt5
make
sudo make install
6. sudo apt-get build-dep octave
./configure --with-qt=5 (may not need --with-qt=5)
make
make install
6. wget http://download.nomachine.com/download/6.2/Linux/nomachine_6.2.4_1_amd64.deb
sudo dpkg -i nomachine_6.2.4_1_amd64.deb
6. tasksel-> LAMP server
7. If can't access mysql as mysql user root from normal user account but can access mysql without mysql root password from ubuntu root accout, then follow the lines below (the parentheses are comments):
cf: https://askubuntu.com/questions/766334/cant-login-as-mysql-user-root-from-normal-user-account-in-ubuntu-16-04/801950
(1). su - (get into ubuntu root account)
(2). mysql -u root (get into mysql, should be no need password)
(3). select User,host,plugin from mysql.user;
(4). update mysql.user set plugin = 'mysql_native_password' where User='root';
(5). select User,host,plugin from mysql.user; (plugin column should be changed)
(6). SET PASSWORD FOR 'root'@'localhost' = PASSWORD('new password');
or for mysql 8.0 in ubuntu 20.04
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'newpassord'
(7). flush privileges;
8. guake hangs when exit press Ctrl-D.
sudo apt install libutempter0
Solve the hanging problem (cf:https://github.com/Guake/guake/issues/1198)
9. add new user for samba:
sudo smbpasswd -a chiao
then input password (twice)
