[ILUG] Silly bash Q

[kevin lyda]

On Mon, Feb 12, 2001 at 09:48:07AM -0000, JustinMacCarthy wrote:
> Thought it would be something like that! What are the rules for when to use
> " or ' or ` ?? Do they 'evaluate' to differently??
> 
> EG why does su -c '!!' not work and su -c "!!" work ?

'' won't interpolate the string.  in other words nothing in the string is magic.  "" does interpolate the string.  so...

export foo=moo

$ echo '$foo'
$foo
$ echo "$foo"
moo

kevin

-- 
kevin at suberic.net        i...  i have a dream.  and that dream is:
fork()'ed on 37058400    use DIY::Tiler;
meatspace place: work    my($t) = new DIY::Tiler;
                         $t->tile(-room => "en-suite", -style => "stone");