Java
apt install openjdk-8-jdk-headless
apt install nodejs
apt install maven
apt install npm
apt install ant
PostgreSQL
Install
apt install postgresql postgresql-contrib
sudo su; su - postgres
createuser postgres; createdb postgres
createuser root; createdb root
createuser pi; createdb pi
exit; exit
Schema
-- sudo su; su - postgres; psql
CREATE DATABASE academia;
CREATE USER academia WITH ENCRYPTED PASSWORD 'academia';
GRANT ALL PRIVILEGES ON DATABASE academia TO academia;
sudo su; su - postgres
psql academia < academia.sql
psql -h db00.chorke.org -p 5432 -d academia -U academia
psql -h db00.chorke.org -p 5432 -d academia -U academia -W -f academia.sql
pg_restore -h db00.chorke.org -p 5432 -d academia -U academia academia.dump
Delete
-- sudo su; su - postgres; psql
REVOKE CONNECT ON DATABASE academia FROM public;
SELECT pg_terminate_backend(pg_stat_activity.pid)
FROM pg_stat_activity
WHERE pg_stat_activity.datname in ('academia');
sudo su; su - postgres
ps -ef | grep postgres
kill -9 PID
-- sudo su; su - postgres; psql
DROP DATABASE IF EXISTS academia;
PgAdmin4
apt install curl
curl https://www.pgadmin.org/static/packages_pgadmin_org.pub | sudo apt-key add
sudo sh -c 'echo "deb https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/$(lsb_release -cs) pgadmin4 main" > \
/etc/apt/sources.list.d/pgadmin4.list && apt update'
apt install pgadmin4-desktop
Redis
apt install redis-server
nano /etc/redis/redis.conf
: <<'END_COMMENT'
# If you run Redis from upstart or systemd, Redis can interact with your
# supervision tree. Options:
# supervised no - no supervision interaction
# supervised upstart - signal upstart by putting Redis into SIGSTOP mode
# supervised systemd - signal systemd by writing READY=1 to $NOTIFY_SOCKET
# supervised auto - detect upstart or systemd method based on
# UPSTART_JOB or NOTIFY_SOCKET environment variables
# Note: these supervision methods only signal "process is ready."
# They do not enable continuous liveness pings back to your supervisor.
supervised systemd
END_COMMENT
systemctl status redis-server
Workspace
mkdir -p $HOME/chorke
mkdir -p /opt/dev/$USER/chorke/academia
chown $USER:$USER -R /opt/dev/$USER
export ACADEMIA_WSS="$HOME/chorke/academia"
ln -s /opt/dev/$USER/chorke/academia $ACADEMIA_WSS
ls -lah $HOME/chorke
nano ~/.bashrc
Editor
sudo apt install apt-transport-https
wget -qO - https://download.sublimetext.com/sublimehq-pub.gpg | sudo apt-key add -
echo "deb https://download.sublimetext.com/ apt/stable/" | sudo tee /etc/apt/sources.list.d/sublime-text.list
sudo apt update;sudo apt install sublime-text
sudo snap install notepad-plus-plus
Git SCM
ssh-keygen -t rsa -b 4096 -C "[email protected]"
: <<'END_COMMENT'
Generating public/private rsa key pair.
Enter file in which to save the key (/home/user/.ssh/id_rsa): /home/user/.ssh/git_academia_chorke_org_rsa
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/user/.ssh/git_academia_chorke_org_rsa
Your public key has been saved in /home/user/.ssh/git_academia_chorke_org_rsa.pub
The key fingerprint is:
SHA256:TXBbBINcPcVtdVFRjs/P+jaxMFAIwr3uqdlt8tmrLVQ [email protected]
The key's randomart image is:
+---[RSA 4096]----+
| .oo+*++o.+@|
| .++ =o..o+|
| + .....|
| + . E o |
| S . o o|
| . . o o.|
| . o o =|
| o+.o+ +.|
| o..+=o+ooo|
+----[SHA256]-----+
END_COMMENT
ls -lah ~/.ssh/
cat < ~/.ssh/git_academia_chorke_org_rsa.pub
nano ~/.ssh/config
: <<'END_COMMENT'
Host git.academia.chorke.org
HostName git.academia.chorke.org
PreferredAuthentications publickey
IdentityFile ~/.ssh/git_academia_chorke_org_rsa
User git
END_COMMENT
git config --global user.email "[email protected]"
git config --global user.name "FULL NAME"
ssh -vT git.academia.chorke.org
Knowledge
disk usage
du -h /var
du -sh /var
du -csh ~/Do*
du -csh /var/log /var/lib
du -sh --apparent-size /var/lib
du -h /var/ | sort -rh | head -5
snap install telegram-sergiusens
snap install notepad-plus-plus
snap install skype --classic
apt install net-tools
snap install postman
ls -lah ~/.local/share/applications/
ls -lah ~/.config/autostart/
ls -lah ~/.local/share/
rm -rf ~/.local/share/applications/jetbrains-toolbox.desktop
rm -rf ~/.config/autostart/jetbrains-toolbox.desktop
rm -rf ~/.local/share/JetBrains/Toolbox
reset time zone
timedatectl set-ntp true
timedatectl set-ntp false
timedatectl set-time '2021-12-31 23:58:00'
timedatectl set-timezone 'Asia/Kuala_Lumpur'
#nano ~/.bashrc
#nano ~/.zshenv
#nano ~/.profile
#nano ~/.bash_profile
export ACADEMIA_WSS="$HOME/chorke/academia"
export ACADEMIA_LOG_PATH="$HOME/.chorke/academia/var/http/logs"
source ~/.bashrc
source ~/.profile
source ~/.bash_profile
source ~/.zshenv
source ~/.zprofile/.zlogin
git stashing
git stash; git checkout -b new_branch; git stash pop
git add .; git commit -m "new feature added"; git push
ssh-keygen -p -f ~/.ssh/git_academia_chorke_org_rsa
: <<'END_COMMENT'
Enter old passphrase:
Key has comment '[email protected]'
Enter new passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved with the new passphrase.
END_COMMENT
Postgres SSH Dump
sudo su
mkdir /var/lib/postgresql/.ssh
cp /home/pi/.ssh/cid_academia_rsa* /var/lib/postgresql/.ssh/
cp /home/pi/.ssh/config /var/lib/postgresql/.ssh/
cp -r /home/pi/chorke /var/lib/postgresql/
chown postgres:postgres -R /var/lib/postgresql/.ssh
chown postgres:postgres -R /var/lib/postgresql/chorke
su - postgres
cd ~/chorke/academia/assets
sh copy_dbs_staging2staging_ebis.sh
References