postgreSQL 错误 initdb: command not found

Question

i was installing postgresql on ubuntu using linuxbrew:

brew install postgresql

it seems to work fine but after that because i was installing PostgreSQL for the first time i tried creating a database:

initdb /usr/local/var/postgres -E utf8

but it returned as:

initdb: command not found

i tried running the command with sudo but that doesn't helped

Answer 1

run locate initdb it should give you the list to chose. smth like:

MacBook-Air:~ vao$ locate initdb
/usr/local/Cellar/postgresql/9.5.3/bin/initdb
/usr/local/Cellar/postgresql/9.5.3/share/doc/postgresql/html/app-initdb.html
/usr/local/Cellar/postgresql/9.5.3/share/man/man1/initdb.1
/usr/local/Cellar/postgresql/9.6.1/bin/initdb
/usr/local/Cellar/postgresql/9.6.1/share/doc/postgresql/html/app-initdb.html
/usr/local/Cellar/postgresql/9.6.1/share/man/man1/initdb.1
/usr/local/bin/initdb
/usr/local/share/man/man1/initdb.1

So in my case I want to run

/usr/local/Cellar/postgresql/9.6.1/bin/initdb 

If you don't have mlocate installed, either install it or use

sudo find / -name initdb

Answer 2

There's a good answer to a similar question on SuperUser .

In short:

1. Postgres groups databases into "clusters", each of which is a named collection of databases sharing a configuration and data location, and running on a single server instance with its own TCP port.
2. If you only want a single instance of Postgres, the installation includes a cluster named "main", so you don't need to run initdb to create one.
3. If you do need multiple clusters, then the Postgres packages for Debian and Ubuntu provide a different command pg_createcluster to be used instead of initdb , with the latter not included in PATH so as to discourage end users from using it directly.

And if you're just trying to create a database, not a database cluster, use the createdb command instead.

Answer 3

I had the same problem and found the answer here .

Ubuntu path is

/usr/lib/postgresql/9.6/bin/initdb

Edit: Sorry, Ahmed asked about linuxbrew, I'm talking about Ubuntu. I Hope this answer helps somebody.

Answer 4

I had a similar issue caused by the brew install postgresql not properly linking postgres. The solve for me was to run:

brew link --overwrite postgresql

Answer 5

you can add the PATH to run from any location

sudo nano ~/.profile

inside nano go to the end and add the following

# set PATH so it includes user's private bin if it exists
if [ -d "/usr/lib/postgresql/14/bin/" ] ; then
    PATH="/usr/lib/postgresql/14/bin/:$PATH"
fi

and configure the alternative

sudo update-alternatives --install /usr/bin/initdb initdb /usr/lib/postgresql/14/bin/initdb 1