Posts tagged manpages

man man

posted on 2013-10-31 18:17:24

What are the reasons for the numbers when firing up manpages? What is the difference between man printf and man 3 printf? (The first is about the shell command. The latter is about the C function.)

Its the group to which the entries belong: (Found in man man.)

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), e.g. man(7), groff(7)
8 System administration commands (usually only for root)
9 Kernel routines [Non standard]

If there exists only one man entry, the number can be omitted. That is why man git or man gittutorial works, even though git is from section 1, but the tutorial is located in section 7.

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