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Pointer to the process's environment variables
#include <unistd.h>
extern char ** environ;
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
When a process begins, an array of strings called the environment is made available.
This array is pointed to by the external variable environ.
The strings in the array have the form:
variable=value
and are terminated by a NULL pointer.
POSIX 1003.1
Don't modify environ directly; use
clearenv(),
getenv(),
putenv(),
searchenv(),
setenv(), and
unsetenv().
Changes to the environment affect all threads in a multithreaded process.
clearenv(),
getenv(),
putenv(),
searchenv(),
setenv(),
unsetenv()
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