Delete empty csv files in directory - R -

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have many csv files in folder (1.csv,2.csv....,20.csv) few of them empty (5.csv,8.csv). empty files contain size around 4 bytes , not size 0.
need delete them in directory , want achieve in r. possible? appreciate help!

the function countlines() r.utils package job:

library(r.utils)  lapply(filter(function(x) countlines(x)==0, list.files(pattern='.csv')), unlink)

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