I already have postgresql installed (psql (PostgreSQL) 13.4) and the local server set-up on my windows machine (along with pgAdmin4), and already have some databases in it.
I've recently installed WSL and planning on using it instead of windows+bash going forward. Hence I'm installing postgresql 13 for WSL. I follow https://pgdash.io/blog/postgres-13-getting-started.html for the installation:
# add the repository
> sudo tee /etc/apt/sources.list.d/pgdg.list <<END
> deb http://apt.postgresql.org/pub/repos/apt/ focal-pgdg main
> END
# get the signing key and import it
> wget https://www.postgresql.org/media/keys/ACCC4CF8.asc sudo apt-key add
> ACCC4CF8.asc
# fetch the metadata from the new repo
> sudo apt-get update
> sudo apt-get install -y postgresql-13
It installed postgres with psql --version = psql (PostgreSQL) 13.4 (Ubuntu 13.4-1.pgdg20.04+1)
Then I start the service with
> sudo service postgresql start
> sudo -u postgres psql
My questions are:
When I check the list of databases I have using \l, I can't see my existing postgres database that I have in my windows machine, why? and how do I connect/import it to the wsl?
How do I make the WSL database/server appears in my existing pgAdmin4 GUI? I have already a server for my windows machine (localhost, port 5432). How can I add database from the WSL server, since it has the same settings? For example, I tried creating new database via WSL psql command line CREATE DATABASE ubuntu;, and the new database appears in the WSL postgres list in terminal, but the pgAdmin GUI only shows database from my windows server. How do I sync both databases in windows and WSL and show them both in pgAdmin?
database list in windows (from pgAdmin4)
database list in WSL
Thanks for the help
i wanted to download java using sudo apt on ubuntu 18.04 but it sent me "E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?"
so i tried to run "apt-get update" which sent me lots of error that looks like this " chmod 0644 of file /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_bionic_InRelease failed - 201::URIDone (1: Operation not permitted)" so i tried to change the permission using chmod 0644 /var/lib/apt/lists/"
but it didn't work also tried a couple other methods but still didn't work
so hopefully you can tell me what to try to fix it.
btw i'm using windows 10 and running ubuntu 18.04 from the windows store
Remove those files sudo rm -r /var/lib/apt/lists/* and rerun sudo apt-get update
I've seen plenty of answers across the internet saying that to combat the
psql:FATAL: role <username> does not exist
one must use the createuser command, but about a dozen different attempts with that command have only yielded a similar error message.
I've installed PostgreSQL using Ubuntu 15.04's sudo apt-get install postgresql, but PostgreSQL permits to do absolutely nothing.
Do I need to install some dependencies or something?
Try doing these actions as the postgres user:
$ sudo -u postgres -i
The PostgreSQL installation makes a postgres user which runs the PostgreSQL service. It is essentially the superuser of your database. In most cases, you don't know the password for this user but any superuser of a system can log in to other accounts.
I just installeed Postgres, but it seems to have installed 9.3 and I'd like to start with 9.4
I simply did apt-get install postgresql from a new Ubuntu 14.04.1 machine.
http://www.postgresql.org/download/linux/ubuntu/
says you can do:
apt-get install postgresql-9.4
but when I try that I get:
E: Couldn't find any package by regex 'postgresql-9.4
Okay, so I try the section below where you add the PostgreSQL Apt Repository but that can't find anything either.
Is 9.4 not in the package managers yet? Am I doing something horribly wrong?
You can add it from the instructions in the page
http://www.postgresql.org/download/linux/ubuntu/
Create the file /etc/apt/sources.list.d/pgdg.list, and add a line for the repository
deb http://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main
Import the repository signing key, and update the package lists
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
sudo apt-get update && sudo apt-get install postgresql-9.4
postgresql-9.4 is not available in 14.04 "Trusty". It was added in 14.10 "Utopic". It may be back ported in the future.
The directions on the PostgreSQL Ubuntu Download page are missing a command. Their wiki guide has the correct procedure. You must run apt-get update before trying to install. This will cause the system to read changes to the sources.
If you're trying to install on Ubuntu 14.04 "Trusty", you can follow these steps:
To check your version:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.3 LTS
Release: 14.04
Codename: trusty
1) Create new apt repo file for postgres
$ echo "deb http://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main" > /etc/apt/sources.list.d/pgdg.list
2) Import repository signing key and update packages list
$ sudo wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
$ sudo apt-get update
3) Install Postgres
$ sudo apt-get install postgresql-9.4
credit: http://ubuntuhandbook.org/index.php/2014/02/install-postgresql-ubuntu-14-04/
Below are steps to install PostgreSQL 9.4 on Ubuntu 14.04.
Reference taken from this Article:
First, check the version of Ubuntu:
lsb_release -sc
You need to add the latest PostgreSQL repository for the latest version, otherwise It will install PostgreSQL 9.3. This is for trusty version.
sudo add-apt-repository "deb https://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main"
Update and Install PostgreSQL 9.4:
sudo apt-get update
sudo apt-get install postgresql-9.4
Default postgres super user and postgres database is created. You need to set a password for the postgres super user.
ubuntu#:~$ sudo passwd postgres
Enter new UNIX password:****
Retype new UNIX password:****
passwd: password updated successfully
If service is not started, you can start the PostgreSQL service.
sudo service postgresql start
Connect PostgreSQL server using postgres user:
ubuntu#:~$ su postgres
Password:****
Create a sample database:
createdb database_name
Connect to that database:
psql -d database_name
Follow these steps to install postgresql. Open the terminal (Ctrl + Alt + t) and then write down the following command line
sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ `lsb_release -cs`-pgdg main" >> /etc/apt/sources.list.d/pgdg.list'
wget -q https://www.postgresql.org/media/keys/ACCC4CF8.asc -O - | sudo apt-key add -
sudo apt-get update
sudo apt-get install postgresql-9.6
If postgresql installed successfully then it will return this after writing this command
psql --version
psql (PostgreSQL) 9.6.3
PostgreSQL is an open source object-relational database system. It is one of leading database server used for production servers. PostgreSQL allows us to execute stored procedures in various programming languages, like PHP, C/C++, Python, Java, Perl, Ruby and its own PL/pgSQL, which is similar to Oracle’s PL/SQL.
Postgres database is used the persistent store of data
Install Postgres
yum install postgres
(Note : remember the password for the postgres user – you need it later)
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install postgresql-9.6
Setting up Postgres
Launch pgAdmin.
Connect to the local server. Use localhost for the server name, postgres for the username and the password you used when you installed Postgres.
You need to be root to perform this command.Note: If you did not set password during installation (sudo apt-get install postgresql), then you can set it as follows:

sudo -u postgres psql postgres
On the postgres client prompt, use the following command to set the password.
alter user postgres with password 'postgres';
Connect to PostgreSQL
After installing PostgreSQL database server, by default,, it creates a user ‘postgres’ with role ‘postgres’. It also creates a system account with same name ‘postgres’. So to connect to postgres server, log in to your system as user postgres and connect database.
$ sudo su - postgres
$ psql
Now you are logged in to PostgreSQL database server. To check login info use following command from database command prompt.
postgres-# \conninfo
To disconnect from PostgreSQL database command prompt just type below command and press enter. It will return you back to Ubuntu command prompt.
postgres-# \q
I'm trying to install PostgreSQL on Cygwin as a user following the instructions given in the cygwin package installation:
cygrunsrv -S cygserver
initdb -D /usr/share/postgresql/data
pg_ctl start -D /usr/share/postgresql/data -l /var/log/postgresql.log
createdb
psql
After I do the third step, I get the following output in the terminal,
$ postgres -D /usr/share/postgresql/data
LOG: database system was shut down at 2013-04-12 19:04:33 PDT
LOG: autovacuum launcher started
LOG: database system is ready to accept connections
After that, I'm unsure on what to do since I never see the command line again(the "$" sign). I'm a complete beginner when it comes to databases, so are there any 'for dummies' pointers for me?
Use pg_ctl -D /usr/share/postgresql/data -l /path/to/write/log/to start if you want the server to start up and background its self.
I strongly recommend reading the PostgreSQL tutorial and manual, which cover this in detail.