Performed following steps on R:-

### to access to the object
data(InsectSprays)

### create a .csv file
write.csv(InsectSprays, "InsectSpraysCopy.csv")


On another terminal
$ sudo updatedb
$ locate InsectSpraysCopy.csv
/home/userA/InsectSpraysCopy.csv


### Read in some data
test01 <- read.csv(file.choose(), header=TRUE)

Enter file name: /home/userA/InsectSpraysCopy.csv

I either don't understand what you're doing, or you seem
very confused.

R comes with many sample data sets for you to use.

You can see a list of them using the ?data function.

Calling data with an argument loads that dataset.

So, when you type:

> data(InsectSprays)

that data object is now available in R, see

> objects()

You can look at it simply by printing it:

> InsectSprays

If for some reason it makes sense to do it this way for your
use case, then that's fine, I just want to make sure you understand
that you don't have to if accessing built-in datasets is all you want.

### Look at the data
test01
    X count spray
1   1    10     A
2   2     7     A
3   3    20     A

<snip>

### Create a side-by-side boxplot of the data
boxplot(test01$DO ~ test01$Stream)
Error in model.frame.default(formula = test01$DO ~ test01$Stream) : invalid type (NULL) for variable 'test01$DO'

Why do you think test01 has an element called "D0" or "Stream"?? The
column names when you print the data tell you otherwise!

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