A large collection of man pages (documentation) from the Linux
Documentation Project (LDP). The man pages are organized into the
following sections: Section 1, user commands (intro only); Section 2,
system calls; Section 3, libc calls; Section 4, devices (e.g., hd, sd);
Section 5, file formats and protocols (e.g., wtmp, /etc/passwd, nfs);
Section 6, games (intro only); Section 7, conventions, macro packages,
etc. (e.g., nroff, ascii); and Section 8, system administration (intro
only).