R list files with multiple conditions

Question

I want to list all files in a directory that met certain conditions (date and currency). So with only one condition the argument pattern in list.files

Answer 1

In line with Baptiste and the answer on this post (list.files pattern argument in R, extended regular expression use), you can use the following expression:

file.ls <- list.files(path='~/DATA/PiP/Curvas/',
pattern=glob2rx("*20130801*USD*"))

Where * is the wildcard.