redirect variable to same program at next loop


 
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Old 06-16-2008
redirect variable to same program at next loop

Hi all,

I don't know how to redirect a variable in this case:

while true
do
./ready_data
...
done

ready_data should read a file looking for an ID, if this doesn't exist then add the last ID seen into the first line.

When ID exists there is no problem, but when ID doesn't exist, I need the ID variable (inside ready_data) for the next loop process. I have tried with global variables but it seems not working.

while true
do
ID=`./ready_data` with echo ID inside ready_data is not working
done


Any idea on how can I do it?

Thanks
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Mail::SPF::Mod::Redirect(3)				User Contributed Perl Documentation			       Mail::SPF::Mod::Redirect(3)

NAME
Mail::SPF::Mod::Redirect - SPF record "redirect" modifier class DESCRIPTION
An object of class Mail::SPF::Mod::Redirect represents an SPF record modifier of type "redirect". Constructors The following constructors are provided: new(%options): returns Mail::SPF::Mod::Redirect Creates a new SPF record "redirect" modifier object. %options is a list of key/value pairs representing any of the following options: domain_spec See "new" in Mail::SPF::Mod. new_from_string($text, %options): returns Mail::SPF::Mod::Redirect; throws Mail::SPF::ENothingToParse, Mail::SPF::EInvalidMod Creates a new SPF record "redirect" modifier object by parsing the string and any options given. Class methods The following class methods are provided: name: returns string Returns 'redirect'. name_pattern: returns Regexp Returns a regular expression that matches a modifier name of 'redirect'. precedence: returns real Returns a precedence value of 0.8. See "precedence" in Mail::SPF::Mod. Instance methods The following instance methods are provided: params See "params" in Mail::SPF::Mod. domain_spec: returns Mail::SPF::MacroString Returns the "domain-spec" parameter of the modifier. process($server, $request, $result): throws Mail::SPF::Result If no mechanism matched during the evaluation of the current SPF record, performs a recursive SPF check using the given SPF server and request objects and substituting the modifier's target domain name for the request's authority domain. The result of the recursive SPF check is then thrown as the result of the current record's evaluation. However, if the target domain has no acceptable SPF record, a "permerror" result is thrown. See RFC 4408, 6.1, for details. See Mail::SPF::Mod for other supported instance methods. SEE ALSO
Mail::SPF, Mail::SPF::Mod, Mail::SPF::Term, Mail::SPF::Record <http://www.ietf.org/rfc/rfc4408.txt> For availability, support, and license information, see the README file included with Mail::SPF. AUTHORS
Julian Mehnle <julian@mehnle.net>, Shevek <cpan@anarres.org> perl v5.12.1 2010-07-05 Mail::SPF::Mod::Redirect(3)