how can i see the whole users
 

How can I see the whole created users from the root?

thanks & best regards

so you want to ask that how to see all the created users on a linux box?

the user database is maintained in the file /etc/passwd
so you can use
to see the existing user accounts, the 1st field before the colon is the username

thanks for your prompt reply

How can I see the user log of today i.e. which user is currently loged in or logged today or yesterday?

thanks again & best regards

commands

w
who
lastlog

can give you the info related to user logins

Thanks from the core of my heart

If I disable the root access and make it via wheel user then what about the path settings? I mean to say I installed the tomcat+oracle and some other softwares the path will be effected or no?

thanks again & best regards