Remove duplicates using R

1. Remove Duplicates from a list using R environment

2. Suppose we have data with multiple values and
we only want to keep the unique values from
that data like this :
Emna
Tom
Hans
Olivier
Tom
Ana
Simcic
Paul
Simcic
Emna
Emna
Tom
Hans
Olivier
Ana
Simcic
Paul
Data we have looks like this Data we need to look like :

3. R code for removing duplicates
1: set the working
directory where data
is present
2. Read data file
3. See your data
4. Remove duplicates
5. See your data
again