[R] What does the shell() command do?

[l.chhay]

Dear R community,

I am trying to understand what the shell() function does.

An example is:

xfile <- shell(paste("dir/b ",
paste(directory.folder,"file.name",sep="")),intern=T)

I'm afraid I wasn't able to completely understand the explanation under the
Help files.

Thanks for your help!

Leanne.
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