RE: Scripting fun! :-) (was Re: bash scripting nightmare. ( )

[Igor Peshansky <pechtcha@cs.nyu.edu>]

On Fri, 11 Aug 2006, Dave Korn wrote:

> On 11 August 2006 00:12, Linda Walsh wrote:
>
> > Dave Korn wrote:
> >
> >>     Hey all, who's any good at bash scripting?
> >>
> > ---
> >    You are doing correctly, mostly. The simplest way to get from
> > where you are, to where you want to be, is, well think of this:
> > You have created a "command line" all stuffed into 1 variable, right?
> >    Ala:  VAR="cvs co -D \"2006-08-10 15:00:00\" -P pci wimedia"
> > The value of VAR (putting everything between two vertical bars) is:
> >    |cvs co -D "2006-08-10 15:00:00" -P pci wimedia|
> > You have a "literal" expression in "VAR", meaning the quotes are stored
> > as literals and have no special meaning.  If you just try to use "execute"
> > the literal, the arguments are passed in literally.
> >
> >    What you want is for the quotes to regain their special meaning, which
> > you can do by telling the shell to run it's "eval"uator over the expression
> > again before executing, as in "eval $VAR".  In line 9 of your code below,
> > just add an "eval" before the argument.
>
>   Thankyou thankyou thank you THANK YOU!
>
>   That made it all seem so clear.  I could see that the quote mark was
> getting attached to the first word and not keeping the two words as one
> arg, but I didn't know what it means or what to do with it.  Eval'ing it
> worked perfectly, just like you said.  Thanks for saving my sanity!

Not to sound defensive, but did you happen to see
<http://cygwin.com/ml/cygwin-talk/2006-q3/msg00138.html> from yesterday?
Just curious...
	Igor
-- 
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