regex - R string match between tags -

How to obtain all file names in a directory in R, for which is the start and end name known?

  list.files (dir_path, pattern = "^ my_")

All files that are "my_"

  Returns from list.files (DIR_path, Pattern = "R. $")

All files that are "R."

But how do I implement both patterns?

  list.files (dir_path, pattern = "^ my _ *. R")

gives character (0)

You can use the following regular expression:

  ^ _ _ * \\. R

BTW, . matches any character, then . $ mail AIR , not only the files that end with . . If you want to match to You really have to save it.

  list.files (dir_path, pattern = "^ my _. * \\. R $")

Contra