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？