User administration commend in Linux

1. Create four users with name john, mike, brian and david ->

#useradd  john

#useradd  mike

#useradd  brian 

#useradd  david
2. Assign password for every user->

#passwd  john -1234

# passwd mike -1234

 # passwd  brian -1234

  # passwd  david -1234

3. Create two group hr and sales->

#groupadd hr

# groupadd sales

4. Now assign john and david in hr group, mike and brian in sales group ->

 #gpasswd –M david,john hr

 #gpasswd –M mike,brian sales

5. Check through id command. ->

#id david   uid=501(david) gid=501(david) groups=501(david), 505(hr)

#id john     uid=502(john) gid=502(john) groups=502(john), 506(hr)

#id mike   uid=503(mike) gid=503(mike) groups=503(mike), 507(sales)

#id brian   uid=504(brian) gid=504(brian) groups=504(brian), 508(sales)