I have seen How do I look up man page references with square brackets?. The questioner gives the example of
gittutorial(7) and being able to access it by
man 7 gittutorial.
When I look at
man regex, the top line has:
REGEX(7) Linux Programmer's Manual REGEX(7)
Now this man page is too difficult for me, so when I see:
AUTHOR This page was taken from Henry Spencer's regex package. SEE ALSO grep(1), regex(3) POSIX.2, section 2.8 (Regular Expression Notation).
man 3 regex but that gives me:
[06:46 PM] ~ $ man 3 regex No manual entry for regex in section 3 [06:46 PM] ~ $
What is the correct way to access
man 7 regex works for
man 4 tty works for
man 8 updatedb works for