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

["Dave Korn" <dave dot korn at artimi dot com>]

On 11 August 2006 16:14, Igor Peshansky wrote:

> 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

  Yep, but I was reading my mail out-of-order.  However, just to show there's
no favouritism going on here,

Thankyou thankyou thank you THANK YOU IGOR!

    cheers,
      DaveK
-- 
Can't think of a witty .sigline today....