I always forget what the number after the man pages means.
For example mkfifo(3) (https://linux.die.net/man/3/mkfifo).
This post helps me (and you) to not forget 🙂
MANUAL SECTIONS
The standard sections of the manual include:
1 User Commands
2 System Calls
3 C Library Functions
4 Devices and Special Files
5 File Formats and Conventions
6 Games et. al.
7 Miscellanea
8 System Administration tools and Daemons
Distributions customize the manual section to their specifics,
which often include additional sections.
Note: I found out that “man” has a man page of itself. So this is not really necessary anymore. I keep it here for others to find though.
But remember:
$ man man