summary(cars)

##      speed           dist       
##  Min.   : 4.0   Min.   :  2.00  
##  1st Qu.:12.0   1st Qu.: 26.00  
##  Median :15.0   Median : 36.00  
##  Mean   :15.4   Mean   : 42.98  
##  3rd Qu.:19.0   3rd Qu.: 56.00  
##  Max.   :25.0   Max.   :120.00

mkdir my_new_folder
ls
rm -d my_new_folder

## bibliography.bib
## ex_01.html
## ex_01.Rmd
## ex_02.html
## ex_02.Rmd
## ex_03.Rmd
## ex_04.Rmd
## ex_05.Rmd
## ex_06.Rmd
## ex_07.Rmd
## ex_08.Rmd
## ex_09.Rmd
## ex_10.Rmd
## ex_11.Rmd
## ex_12.Rmd
## my_new_folder

x = "my string"
print(x.split(" "))

## ['my', 'string']