HowTo: Completely Uninstall Postgresql14 from MacOs Catalina If I've used the EnterpriseDB.com GUI installer - postgresql

Question

I've been trying to get this to work by following the answers in these questions:
How to uninstall postgresql on my Mac (running Snow Leopard)
Completely uninstall PostgreSQL 9.0.4 from Mac OSX Lion?
...but they're not working. So, here's what I have tried instead/in addition...
.
me#myMac:~$ cd /Library/PostgreSQL/14
me#myMac:/Library/PostgreSQL/14$ ./uninstall-postgresql.app/
-bash: ./uninstall-postgresql.app/: is a directory
me#myMac:/Library/PostgreSQL/14$ open ./uninstall-postgresql.app/
LSOpenURLsWithRole() failed with error -10810 for the file /Library/PostgreSQL/14/uninstall-postgresql.app.
me#myMac:/Library/PostgreSQL/14$ open -a ./uninstall-postgresql.app/
Unable to find application named './uninstall-postgresql.app/'
me#myMac:/Library/PostgreSQL/14$ open -a uninstall-postgresql.app/
Unable to find application named 'uninstall-postgresql.app/'
me#myMac:/Library/PostgreSQL/14$ sudo open uninstall-postgresql.app/
Password:
LSOpenURLsWithRole() failed with error -10810 for the file /Library/PostgreSQL/14/uninstall-postgresql.app.
me#myMac:/Library/PostgreSQL/14$ cd /Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS/
me#myMac:/Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS$ install
install install_name_tool installvst
install-info installer
me#myMac:/Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS$ installer
Usage: installer [-help] [-dominfo] [-volinfo] [-pkginfo] [-allowUntrusted] [-dumplog]
[-verbose | -verboseR] [-vers] [-config] [-plist]
[-file <pathToFile>] [-lang <ISOLanguageCode>] [-listiso]
[-showChoicesXML] [-applyChoiceChangesXML <pathToFile>]
[-showChoicesAfterApplyingChangesXML <pathtoFile>]
-pkg <pathToPackage>
-target <[DomainKey|MountPoint]>
me#myMac:/Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS$ installbuilder.sh
-bash: installbuilder.sh: command not found

Answer 1

SINCE I couldn't run/find installbuilder.sh using the following command...
me#myMac:/Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS$ installbuilder.sh
-bash: installbuilder.sh: command not found
...as the other answers in my OP suggest, I went on to try the steps below:
me#myMac:/Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS$ ls -la
total 3112
drwxr-xr-x 5 root daemon 160 Sep 23 10:48 ./
drwxr-xr-x 5 root daemon 160 Sep 23 09:18 ../
-rwxr-xr-x 1 root daemon 673 Sep 23 10:48 installbuilder.sh*
-rwxr-xr-x 1 root daemon 1449456 Sep 23 10:07 osx-x86_64*
-rwxr-xr-x 1 root daemon 135216 Jul 14 11:21 uninstall-postgresql*
me#myMac:/Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS$ ./installbuilder.sh
Unable to initialize installer
me#myMac:/Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS$ ./uninstall-postgresql
Usage: ./uninstall-postgresql installerName [args ...]
me#myMac:/Library/PostgreSQL/14/uninstall-postgresql.app/Contents/MacOS$ ./uninstall-postgresql osx-x86_64
and VOILA!!!
This launched the uninstall GUI
Choose UNINSTALL ALL / REMOVE ENTIRE INSTALLATION
The uninstaller will do its thing and then prompt you with this:
At this point you'll want to follow the steps provided in this PREVIOUS StackOverflow ANSWER - steps 3 through 6 of #user1181328's answer. I'll list them here for convenience:
Remove the PostgreSQL and data folders. The Wizard will notify you that these were not removed.
sudo rm -rf /Library/PostgreSQL
Remove the ini file:
sudo rm /etc/postgres-reg.ini
Remove the PostgreSQL user:
using System Preferences -> Users & Groups.
Unlock the settings panel by clicking on the padlock and entering your password.
Select the PostgreSQL user and click on the minus button.
Restore your shared memory settings:
sudo rm /etc/sysctl.conf
That should be all! The uninstall wizard would have removed all icons and start-up applications files so you don't have to worry about those.