Hi, I'm hoping that somebody might be able to help me with a hopefully simple programming query.
I am in the process of writing a bit of code in C that looks at the parallel port and sets an environment variable depending on the state of the pins. I need this to be accessible to a bash script which performs some other functions. So far I have the interfacing to the port working fine, but I cannot set the environment variable. I have used getenv() to READ an environment variable, and this works fine. I am trying to use putenv() to set a variable called PINSTAT, but when I check it is still set to a null value. One thought was that the variable only remains set whilst the program is running, so I set a do/while loop to continually set it. Even with my program in a loop, from another session, an "echo $PINSTAT" still shows a null. I have read a few bits and pieces about glibc's putenv() function not working correctly - is this my problem and is there a way around it? Setup is Redhat Linux 6.2, gcc and glibc-2.1.3-23 if this helps. Thanks in advance, Geoff -- SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
