Shell confusion
Bryn M. Reeves
bmr at redhat.com
Fri Mar 13 15:42:53 UTC 2009
On Fri, 2009-03-13 at 15:41 +0000, Bryn M. Reeves wrote:
> On Fri, 2009-03-13 at 15:09 +0000, Dave Bolt IT Solutions wrote:
> > Thanks for the explanation of the use of - in the su command.
> > I checked the man pages for su, (why did you put su(1)), and found the
>
> Because the man pages have traditionally been organised into several
> sections. The number in parentheses indicates the section of the manual
> that the page is in (this is important since for e.g. there are library
> calls that have the same name as commands, e.g. /usr/bin/printf is
> documented in printf(1) but the printf call in the stdio library is
> documented in printf(3)).
>
> The conventional man sections are:
>
> 1 User Commands
>
> 2 System Calls
>
> 3 C Library Functions
>
> 4 Devices and Special Files
>
> 5 File Formats and Conventions
>
> 6 Games et. Al.
>
> 7 Miscellanea
>
> 8 System Administration tools and Deamons
>
> See "man man" for more information.
Doh. Forgot to mention that to select a section you just put the number
as the first argument to man. E.g:
$ man 1 printf -> /usr/bin/printf's man page
$ man 3 printf -> printf() call in stdio.h's man page
Bryn.
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