Manual Pages (man and apropos)

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Manual Pages (man and apropos)

Man pages are divided into sections:

...`/man1`	User programs
...`/man2`	System calls
...`/man3`	Library calls
...`/man4`	Special files
...`/man5`	File formats
...`/man6`	Games
...`/man7`	Miscellaneous
...`/man8`	System administration
...`/man9`	Kernel documentation

man command: Print manual page.
For example cp(1) for the cp command in Section 1
can be read with: man 1 cp

apropos command: Search manual pages for a keywork.
For example: apropos mpeg