Create README.md

README.md

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+# Postgres Backup and Restore Script
+
+This is a bash script that allows you to backup and restore a specified PostgreSQL database with a timestamp in the backup file's name.
+
+## Usage
+```
+./script.sh [-b|--backup] [-r|--restore] [-d|--database] [-h|--help] database_name
+```
+- **-b** or **--backup**: backup the specified database
+- **-r** or **--restore**: restore the specified database
+- **-d** or **--database**: specify the name of the database
+- **-h** or **--help**: display the usage help text
+
+## Example
+```
+./script.sh -b -d mydatabase
+```
+
+This will backup the database `mydatabase`
+```
+./script.sh -r -d mydatabase
+```
+
+This will restore the database `mydatabase` from the latest backup file.
+
+## Requirements
+- postgresql
+- postgresql_utils
+
+## Deployment
+This script can be deployed using nix package manager, you can find an example of a `flake.nix` file in the repository that you can use to deploy the script and its dependencies.
+
+Please make sure you don't overwrite any important files by creating a new backup file with the same name.