3 ms·

Yes. Or if you're going to whip out Python, might as well make it all in Python.

• masklinn 8y ago
  Very much my thinking, especially when there are no significant commands you need to shell out to: import sys, pathlib basedir = pathlib.Path(sys.argv[1]) for i in range(1, 501): if not (basedir / f'{i:04}_A.csv').is_file(): print(i)
  • v3gas 8y ago
    Nice one!
  • hellabites 8y ago
    Just for fun some bash: for k in $(seq -f %04.f 1 501); do f="${k}_A.csv" ! [[ -f "$f" ]] && echo $f || : done or more succinctly, for k in {0001..0501}_A.csv; do ! [[ -f "$f" ]] && echo $f || : done and if you have GNU parallel installed: parallel -kj1 '! [[ -f "{}" ]] && echo {} || :' ::: {0001..0501}_A.csv