Follow this guide to install Redis Open Source: Install Redis on Linux. Return here once complete.

Download PostgreSQL here: Download page of PostgreSQL. Return here once installed.

Don’t forget to start and enable both services to run at system startup:

# Redis setup is covered in the installation guide
sudo systemctl enable redis-server
sudo systemctl start redis-server
# PostgreSQL setup – this part is often not included in guides
sudo systemctl enable postgresql
sudo systemctl start postgresql

Follow this guide to install Redis Open Source: Install Redis on MacOS. Return here once finished.

Download PostgreSQL here: Download page of PostgreSQL. Return here once finished.

Service startup instructions are included in the respective guides.

Since Codespaces run on Ubuntu, the setup is similar to the Linux instructions. Auto-starting services on boot is skipped to save memory and runtime.

Install and start Redis:

sudo apt-get update
sudo apt-get install redis
sudo service redis-server start

Install and start PostgreSQL:

sudo apt-get update
sudo apt-get -y install postgresql
sudo service postgresql start

Install ClamAV via apt package manager

sudo apt install clamav clamav-daemon -y

• clamav: the command-line scanner (clamscan)
• clamav-daemon: runs the clamd background service for faster scanning

Stop the daemon before updating virus definitions

# Github Codespaces
sudo service clamav-freshclam stop
# Ubuntu/Debian (Linux)
sudo systemctl stop clamav-freshclam

Update virus definitions

# fetches the latest virus signatures from ClamAV's servers
sudo freshclam

Start services

# Github Codespaces
sudo service clamav-freshclam start
sudo service clamav-daemon start
# Ubuntu/Debian (Linux)
sudo systemctl enable clamav-freshclam
sudo systemctl start clamav-freshclam
sudo systemctl enable clamav-daemon
sudo systemctl start clamav-daemon

Install Ghostscript via apt package manager

sudo apt install ghostscript -y
gs --version

Ghostscript should at least return version 10.02.1 (last checked: November 7th, 2025).

Install ClamAV via Homebrew

brew install clamav

Verify the installation

brew list clamav
clamscan --version

You should see binaries like clamd, clamdscan, clamscan, and configuration files in /opt/homebrew/etc/clamav/. The version of ClamAV should at least be 1.5.1 (last checked: January 5th, 2026).

Copy sample configuration files

ClamAV ships with sample configuration files that you’ll need to customize:

cd /opt/homebrew/etc/clamav
cp clamd.conf.sample clamd.conf
cp freshclam.conf.sample freshclam.conf

Configure clamd.conf

nano /opt/homebrew/etc/clamav/clamd.conf

Edit or uncomment these lines:

# Where the database files are stored
DatabaseDirectory /opt/homebrew/var/lib/clamav
    
# Temporary directory
TemporaryDirectory /tmp
    
# Log file location
LogFile /opt/homebrew/var/log/clamav/clamd.log
LogFileMaxSize 5M
    
# Local socket (used by clamdscan)
LocalSocket /opt/homebrew/var/run/clamav/clamd.sock
FixStaleSocket yes
    
# Run as daemon
Foreground no

Configure freshclam.conf

nano /opt/homebrew/etc/clamav/freshclam.conf

Edit these lines:

DatabaseDirectory /opt/homebrew/var/lib/clamav
UpdateLogFile /opt/homebrew/var/log/clamav/freshclam.log
DatabaseOwner _clamav
Checks 12

Create required directories

sudo mkdir -p /opt/homebrew/var/lib/clamav
sudo mkdir -p /opt/homebrew/var/log/clamav
sudo mkdir -p /opt/homebrew/var/run/clamav
sudo chown -R $(whoami) /opt/homebrew/var/{lib,log,run}/clamav

Download virus definitions

freshclam

This downloads the latest virus definitions to /opt/homebrew/var/lib/clamav.

Start the ClamAV daemon

brew services start clamav

Note: Homebrew services don’t automatically update virus definitions. Remember to run freshclam regularly to keep your definitions up-to-date.

Install Ghostscript via Homebrew

brew install ghostscript
gs --version

Ghostscript should at least return version 10.06.0 (last checked: January 5th, 2026).

sudo -u postgres psql
\password

CREATE DATABASE your_db_name;

psql postgres
\password

CREATE DATABASE your_db_name;

sudo su postgres
psql postgres
\password

CREATE DATABASE your_db_name;