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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CURLOPT_MAXREDIRS(3)					     curl_easy_setopt options					      CURLOPT_MAXREDIRS(3)

NAME
CURLOPT_MAXREDIRS - maximum number of redirects allowed SYNOPSIS
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAXREDIRS, long amount); DESCRIPTION
Pass a long. The set number will be the redirection limit amount. If that many redirections have been followed, the next redirect will cause an error (CURLE_TOO_MANY_REDIRECTS). This option only makes sense if the CURLOPT_FOLLOWLOCATION(3) is used at the same time. Setting the limit to 0 will make libcurl refuse any redirect. Set it to -1 for an infinite number of redirects. DEFAULT
-1, unlimited PROTOCOLS
HTTP(S) EXAMPLE
curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/"); /* enable redirect following */ curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L); /* allow three redirects */ curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 3L); /* Perform the request */ curl_easy_perform(curl); } AVAILABILITY
Along with HTTP RETURN VALUE
Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not. SEE ALSO
CURLOPT_FOLLOWLOCATION(3), libcurl 7.54.0 February 03, 2016 CURLOPT_MAXREDIRS(3)