Re: [PLUG] Update: Strange Bash Behavior vis-a-vis Embedded Spaces and Wildcards

[Casey Bralla <MailList@nerdworld.org>]

Sure, anybody can figure it out if you red the man pages... <smart-aleck grin>


Thanks gang,  it all makes sense to me now.



On Saturday, January 26, 2013 5:35:55 PM Paul L. Snyder wrote:
> When in doubt, turn to the manpage.  The rule for double-quoted strings
> is simple:
> 
>   Enclosing characters in double quotes preserves the literal value of all
>   characters within the quotes, with the exception of $, `, \, and, when
>   history expansion is enabled, !.
> 
> Single-quoted strings are even simpler:
> 
>   Enclosing characters in single quotes preserves the literal value of
>   each character within the quotes. A single quote may not occur between
>   single quotes, even when preceded by a backslash.
> 
> If you want globbing, it has to be done outside of a quoted context.
> 
>       Paul
> 
> On Sat, 26 Jan 2013, Doug Stewart wrote:
> > In bash, " quoted strings should have all variables and wildcards
> > expanded while ' quoted strings should parse as liberals, so I'm not
> > sure if that's correct...
> > 
> > On Saturday, January 26, 2013, David Coulson wrote:
> > > Your quote includes the asterisk, so it is interpreted as a literal,
> > > rather than wildcard.
> > > 
> > > Sent from my iPad
> > > 
> > > On Jan 26, 2013, at 5:27 PM, Casey Bralla
> > > <MailList@nerdworld.org<javascript:;>>
> > > 
> > > wrote:
> > > > Ooops, I over-simplified the example:
> > > > 
> > > > try
> > > > 
> > > > ls "directory with spaces/*name"   (with a wildcard).
> > > > 
> > > > 
> > > > 
> > > > but
> > > > 
> > > > ls directory\ with\ spaces/*name  works
> > > > 
> > > > 
> > > > 
> > > > Also, as David Coulson suggested
> > > > 
> > > >  ls "directory with spaces"/*name also works.
> > > > 
> > > > It must be something with the quoted wildcard.
> > > > 
> > > > On Saturday, January 26, 2013 4:13:37 PM Casey Bralla wrote:
> > > >> I recently tried to do a file deletion and got some strange results.
> > > >> 
> > > >> If I did this command:
> > > >> 
> > > >> rm "/directory with spaces/filename" (with quotes around the full
> > > >> path
> > > 
> > > and
> > > 
> > > >> file name) the command would error out with a file-not-found error.
> > > >> 
> > > >> However, this command works just fine:
> > > >> 
> > > >> rm /directory\ with\ spaces/filename
> > > >> 
> > > >> 
> > > >> I thought quoting the filename would work, but I had to escape the
> > > 
> > > spaces
> > > 
> > > >> to make it work.  I find the escape method to be difficult to read,
> > > 
> > > while
> > > 
> > > >> the quoted string is very easy.  Hence, I always use the quoted
> > > >> method.
> > > >> 
> > > >> Can anybody explain why the quoted string does not work?
> > > > 
> > > > --
> > > > 
> > > > 
> > > > Casey Bralla
> > > > 
> > > > Chief Nerd in Residence
> > > > The NerdWorld Organisation
> > > > www.NerdWorld.org
> > > 
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-- 


Casey Bralla

Chief Nerd in Residence
The NerdWorld Organisation
www.NerdWorld.org
___________________________________________________________________________
Philadelphia Linux Users Group         --        http://www.phillylinux.org
Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce
General Discussion  --   http://lists.phillylinux.org/mailman/listinfo/plug