Write a command to display user-id of all the users in your system. 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