Load environment variables from dotenv / .env file in Bash script

dot-env.sh

#!/bin/bash

# Specify the path to your .env file
ENV_FILE=".env"

# Function to success color text with green
successText() {
  tput setaf 2
  echo "$@"
  tput sgr0
}

# Function to info color text with blue
infoText() {
  tput setaf 4
  echo "$@"
  tput sgr0
}

# Function to error color text with red
errorText() {
  tput setaf 1
  echo "$@"
  tput sgr0
}

# Check if the .env file exists
if [ -f "$ENV_FILE" ]; then

  echo $(infoText "[INFO]: Reading $ENV_FILE file.")

  # Read the .env file line by line
  while IFS= read -r line; do
    # Skip comments and empty lines
    if [[ "$line" =~ ^\s*#.*$ || -z "$line" ]]; then
      continue
    fi

    # Split the line into key and value
    key=$(echo "$line" | cut -d '=' -f 1)
    value=$(echo "$line" | cut -d '=' -f 2-)

    # Remove single quotes, double quotes, and leading/trailing spaces from the value
    value=$(echo "$value" | sed -e "s/^'//" -e "s/'$//" -e 's/^"//' -e 's/"$//' -e 's/^[ \t]*//;s/[ \t]*$//')

    # Export the key and value as environment variables
    export "$key=$value"
  done < "$ENV_FILE"
  echo $(successText "[DONE]: Reading $ENV_FILE file.")
else
  echo $(errorText "[ERROR]: $ENV_FILE not found.")
fi

This script handles:

• Ignoring # bash comment.
• Remove ' from env var value.
• Remove " from env var value.