Is there a command in linux to list all users?

Is there a command in linux to list all users?-General Linux technology-Linux technology and application information. The following is a detailed description. Today, I tried to list all users in command mode, but I don't know if there is such a command in linux. I did not search for it online, so I had to find another method.

First of all, enter the home directory, and then ls-l, which is available to all users you have created. However, I found that even if you delete a user, its directory still exists. If you want to know whether the user actually exists, you can only use this command.

Grep username/etc/passwd