Bash syntax, square brackets and -d option

Question

I have this command in bash:

[ -d node_modules/phantomjs ] || npm install -g phantomjs

I am not sure what it means in plain English...

Can anyone please advise?

See: http://linux.die.net/man/1/test – Zoredache Oct 27 '13 at 07:15 — Zoredache, Oct 27 '13 at 07:15
I researched google before posting. Why -1?? – balteo Oct 27 '13 at 10:06 — balteo, Oct 27 '13 at 10:06

score 2 · Accepted Answer · answered Oct 26 '13 at 19:10

2

It means :

If "node_modules/phantomjs" is not directory, run "npm install -g phantomjs"

answered Oct 26 '13 at 19:10

Gilles Quenot

1 Answers1