On Tuesday 06 January 2004 17:11, Craig McLean wrote: > This is more of a best practices question. > > I'm working with environment variables. In UNIX environment variables are > made available directly via the > > extern char **environ > > construct. Which is an array of pointers to strings, each string > containing the key value pairs of environment variables inherited from the > parent process. > > What I'm doing is taking those environment variables and modifying some and > adding a few more. This means I need to create a new char * array. Since > I'm adding some new key value pairs I need to grow the array, the > documentation I have is pretty explicit about you not been able to realloc > the existing array of char*s. So I create a new one that has enough space > to hold pointers to all of the existing strings of key value pairs, plus > the number of additional pointers as required. I then simply assign this > new array to the environ variable. >
There are functions available in stdlib.h that allow you to add, remove, and modify environment variables. You shouldn't attempt to mess around with the **environ variable. man getenv man setenv man putenv Those functions will do everything you mentioned. cheers, Andy _______________________________________________ clug-talk mailing list [EMAIL PROTECTED] http://clug.ca/mailman/listinfo/clug-talk_clug.ca
