Table 2-1. Man Page Sections
Section Contents
Section 1 user commands (intro only)
Section 2 system calls
Section 3 C library 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)
Section 8 system administration (intro only)