[R] [FORGED] help with grep list files

[Rolf Turner]

On 21/02/17 10:41, Glenn Schultz wrote:
> All,
>
> I have the following files in a directory and I would like only a list of those starting with “lld" and ending with “dat”.  I used the following and it gives me the lld files
>
>  list.files(path = readpath, pattern = "^lld[A-Z0-9]")
>
> to get just .dat files I tried
>
>  list.files(path = readpath, pattern = "^lld[A-Z0-9].dat$”) but nothing is returned
>
>
> below is a dput from the first command.  $ is an end of line anchor correct?  What am I doing wrong?
>
>
> Best,
> Glenn
>
> c("lld022017_AB7755_AS0038.dat", "lld022017_AS0039_AS5210.dat",
> "lld022017_AS5211_AS7917.dat", "lld022017_AS7918_AT8661.dat",
> "lld022017_AT8662_AW6667.dat", "lld022017_AW6668_AZ3066.dat",
> "lld022017_AZ3067_BC9534.dat", "lld022017_BC9535_MA2230.dat",
> "lld022017_MA2231_MB0288.dat", "lld022017.zip")

     list.files(pattern="^lld.*\\.dat$")

seems to work for me.

cheers,

Rolf


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