focal 20.04 LTS | jammy 22.04 LTS | mantic 23.10 | noble 24.04 LTS | Section Description |
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cat(1), cat(1), cat(1) | cat(1), cat(1), cat(1) | cat(1), cat(1), cat(1) | cat(1), cat(1), cat(1) | (1) - Executable programs or shell commands | . | . | . | . | (2) - System calls (functions provided by the kernel) | cat(3) | cat(3) | cat(3) | cat(3) | (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) |
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