trusty
14.04
xenial
16.04
bionic
18.04
focal
20.04
jammy
22.04
noble
24.04
plucky
25.04
questing
25.10
resolute
26.04
Section Description
tr(1), tr(1), tr(1)tr(1), tr(1), tr(1)tr(1), tr(1), tr(1)tr(1), tr(1), tr(1)tr(1), tr(1), tr(1)tr(1), tr(1), tr(1)tr(1), tr(1), tr(1)tr(1), tr(1), tr(1)tr(1), tr(1)(1) - Executable programs or shell commands
.........(2) - System calls (functions provided by the kernel)
.........(3) - Library calls (functions within program libraries)
.........(4) - Special files (usually found in /dev)
.........(5) - File formats and conventions eg /etc/passwd
.........(6) - Games
.........(7) - Miscellaneous (including macro packages and conventions)
.........(8) - System administration commands (usually only for root)