#TIL you can create multiple folders under a directory with a single command.

Reply to #TIL you can create multiple folders under a directory with a single command. on Sat, 25 Apr 2026 22:11:49 GMT

michael@westergaard.social — Sat, 25 Apr 2026 22:11:49 GMT

That’s a standard shell feature. A more efficient way of writing same is

mkdir -p cool-fedi-project/{postgres,redis}-data

or even

mkdir -p cool-fedi-project/{postgre,redi}s-data

It also supports ranges, e.g.,

mkdir -p cool-fedi-project/data-{0..5}

creates 6 folders. They can be combined

mkdir -p cool-fedi-project/{a..z}-data-{0..9}{0..9}

creates 2600 folders (26 from letters, 100 2-digit numbers)

mkdir -p cool-fedi-project/{a..z}-data-{0..99}

Also creates 2600 folders, but with a mix of single and double digit numbers.

randomized@masto.bike — Sat, 25 Apr 2026 20:11:28 GMT

Saving it to impress my next date

wtl@mastodon.social — Sat, 25 Apr 2026 16:18:47 GMT

@box464 Okay, that is *neat* and very handy.

varpie@peculiar.florist — Sat, 25 Apr 2026 15:07:14 GMT

@box464 You can even have that in the middle of the path, so you could have written it as mkdir -p cool-fedi-project/{postgres,redis}-data