PoiNtEr->: Printing the Execution Environment in C language

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Thursday, August 11, 2011

Printing the Execution Environment in C language

Enumerating all the variables in the environment is a little trickier.To do this, you
must access a special global variable named environ, which is defined in the GNU C
library.This variable, of type char**, is a NULL-terminated array of pointers to character
strings. Each string contains one environment variable, in the form VARIABLE=value.

extern char** environ;
int main()
char** var;
for(var = environ; *var !=NULL; ++var)
return 0;


Now you know each and every environment variable value ,you can use them to hack into system...try it !

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