What does ulimit -n mean?

Question

System administration

Tried googling, but couldn't find it.
Looked man, did not find option -n.
What does the -n option restrict?

Answer 1

https://yadi.sk/i/a7-QUnbAis59r
you have some wrong mana ;)
-n The maximum number of open file descriptors (most systems do not allow this value to be set)
[[email protected] ~]$ cat /etc/*rele*
CentOS Linux release 7.1.1503 (Core)