salt:tldr:869c0

The command "salt '*' test.ping" is a command used in SaltStack, a configuration management and remote execution tool.

Explanation:

• "salt" is the command used to interact with SaltStack and execute various tasks.
• The asterisk (*) is a wildcard character used to target all minions (SaltStack client systems) connected to the Salt master.
• "test" is a Salt module referring to the testing capabilities of SaltStack.
• "ping" is a function within the test module used to check the connectivity between the Salt master and the minions.

Combining these elements, the command "salt '*' test.ping" instructs the Salt master to send a ping message to all connected minions and check if they are responding. This is a basic test to verify that the Salt master can reach the minions and ensures that the communication channel is functional.