How to get the AD LDAP DN name from an user

Some times we need to have the full distinguished LDAP name for an Active directory user.

There are at least two ways to accomplish this goal:

1st) Running the command dsquery user -name ADUSERNAME where ADUSERNAME is the name of the user on the AD

2nd) Running the command ldifde -f users.txt where all LDAP data from AD is dumped into the file named users.txt