Re: [PLUG] Unix/Windows tip: Piping and command line re-direction...

[Fred Stluka <fred@bristle.com>]

JP,

Thanks for the tip about bash "help".  New to me.  I've updated the entry
at my Unix Tips page:
   http://bristle.com/Tips/Unix.htm#help
and credited you.  I'll mail the updated tip to my Unix list soon.

Check out:
   http://bristle.com/invite.htm
and let me know if you want to be added to, or deleted from, any of
my lists.

--Fred
---------------------------------------------------------------------
Fred Stluka -- mailto:fred@bristle.com -- http://bristle.com/~fred/
Bristle Software, Inc -- http://bristle.com -- Glad to be of service!
Open Source: Without walls and fences, we need no Windows or Gates.
---------------------------------------------------------------------



JP Vossen wrote:
> > Date: Tue, 23 Nov 2010 09:27:30 -0500
> > From: Fred Stluka<fred@bristle.com>
>
> [...]
> > - The Help System (apropos, whatis, man, info, whereis, which,
> >    where, find, locate)
>
> If you use bash, don't forget 'help' which gives you help on internal 
> bash commands.  I suspect other shells are similar.
>
> For example, 'man cd' will either give you the entire bash man page 
> (not helpful in this case) or "No manual entry for cd."
>
> But...
>
> $ help cd
> cd: cd [-L|-P] [dir]
>     Change the shell working directory.
>
>     Change the current directory to DIR.  The default DIR is the value
>     of the HOME shell variable.
>
>     The variable CDPATH defines the search path for the directory
>     containing DIR.  Alternative directory names in CDPATH are
>     separated by a colon (:).
>     A null directory name is the same as the current directory.  If DIR
>     begins with a slash (/), then CDPATH is not used.
>
>     If the directory is not found, and the shell option `cdable_vars'
>     is set, the word is assumed to be  a variable name.  If that
>     variable has a value, its value is used for DIR.
>
>     Options:
>         -L    force symbolic links to be followed
>         -P    use the physical directory structure without following
>                 symbolic links
>
>     The default is to follow symbolic links, as if `-L' were specified.
>
>     Exit Status:
>     Returns 0 if the directory is changed; non-zero otherwise.
>
> --- end ---
>
> Later,
> JP
> ----------------------------|:::======|-------------------------------
> JP Vossen, CISSP            |:::======|      http://bashcookbook.com/
> My Account, My Opinions     |=========|      http://www.jpsdomain.org/
> ----------------------------|=========|-------------------------------
> "Microsoft Tax" = the additional hardware & yearly fees for the add-on
> software required to protect Windows from its own poorly designed and
> implemented self, while the overhead incidentally flattens Moore's Law.
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