Check if Redis is running on Linux.

Two methods can be used to check if Redis has started.

1. To check if Redis is running, open the terminal and enter the following command.

redis-cli ping

If Redis is running, it will return “pong”; if Redis is not running, it will return “Could not connect to Redis at 127.0.0.1:6379: Connection refused”.

1. To utilize system service commands: type the following command in the terminal to verify if the Redis service is running.

For systems using Systemd (like Ubuntu 16.04+):

sudo systemctl is-active redis

If Redis is running, it will return “active”; if Redis is not running, it will return “inactive”.

For SysVinit systems (such as Ubuntu 14.04 and earlier versions):

sudo service redis status

If Redis is running, it will return “redis-server is running”; if Redis is not running, it will return “redis-server is not running”.