Make the script executable

chmod +x wg-client-mgmt.sh

Add a new client

./wg-client-mgmt.sh add john_iphone

Add another client

./wg-client-mgmt.sh add jane_android

List all clients

./wg-client-mgmt.sh list

Show client configuration and QR code

./wg-client-mgmt.sh show john_iphone

Remove a client

./wg-client-mgmt.sh remove john_iphone

Backup all configurations

./wg-client-mgmt.sh backup