how to see all users and groups in linux code example

Example 1: how to see our already added users in linux

$ lslogins -u

UID USER       PROC PWD-LOCK PWD-DENY LAST-LOGIN GECOS
   0 root        144                              root
1000 tecmint      70                     10:39:07 TecMint,,,
1001 aaronkilik    0                              
1002 john          0                              John Doo

Example 2: how to see our already added users in linux

$ users

tecmint
aaron