Linux中man的使用

在Linux Shell中执行man man命令，就能得到Linux系统中的on-line reference manuals，可以看到这些manuals分成9个部分：

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]

但是如何查看man中每一部分的全部内容呢？