system command with single quote characters in the string

[James Flanagan]

I was hopeful that was the fix, but the three slashes did not work in place of the single slash.  thanks, 

James Flanagan
Flantec.com

email:	James at Flantec.com
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On Jun 19, 2013, at 7:11 PM, Kenneth Brody <kenbrody at spamcop.net> wrote:

> On 6/19/2013 6:44 PM, James Flanagan wrote:
>> I am trying to send a unix command that requires " ' " (single quote
>> characters) to encapsulate the data that is being added as metadata in a
>> file. I have tried using the " \ " prior to each single quote character, and
>> if I msgbox the uc variable from the code below, the resulting command
>> appears perfect. however, when uc is actually run by the system command, the
>> single quotes do not appear to be translated properly because I get a
>> message on the screen that says" Error - File not Found - bedroom". That
>> tells me that the single quotes are not being respected to keep "master
>> bedroom" as a single string. Therefore, exiftool misinterprets bedroom as
>> the filename due to the space character between master and bedroom.
>> 
>> I am using FilePro 5.7 on FreeBSD 9.0 p3.
>> 
>> I am hopeful that there is an easy solution to this.  thank you very much,
>> 
>> 
>> ::fn="/tmp/test.jpg":
>> ::va="master bedroom":
>> ::uc="/usr/local/bin/exiftool -q -iptc^AObjectName=\'"{va{"\'"<fn:
>> ::system noredraw uc:
> 
> I'm not on a *nix box at the moment, but IIRC the problem is that you need 
> to use a triple-backslash-quote in order for the shell to see backslash-quote.
> 
> See, for example:
> 
> 
> http://stackoverflow.com/questions/13689738/keeping-double-quotes-when-passing-string-to-popen-in-c
> 
> (Yes, it's an article about "popen" and not "system", but the same basic 
> rules apply.)
> 
> I believe you need:
> 
>     uc="/usr/local/bin/exiftool -q -iptc:ObjectName=\\\'"{va{"\\\'"<fn
> 
> As I said, I'm not on a *nix box at the moment, so I can't test it, but it 
> should be a simple test for you to try.
> 
> -- 
> Kenneth Brody
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