stdlib.h> (See libbsd(7) for include usage.)
const char *
setprogname(const char *progname);
setprogname() functions manipulate the name of the current program. They are used by error-reporting routines to produce consistent output.
getprogname() function returns the name of the program. If the name has not been set yet, it will return
setprogname() function sets the name of the program to be the last component of the progname argument. Since a pointer to the given string is kept as the program name, it should not be modified for the rest of the program's lifetime.
In FreeBSD, the name of the program is set by the start-up code that is run before
main(); thus, running
setprogname() is not necessary. Programs that desire maximum portability should still call it; on another operating system, these functions may be implemented in a portability library. Calling
setprogname() allows the aforementioned library to learn the program name without modifications to the start-up code.
These functions first appeared in NetBSD 1.6, and made their way into FreeBSD 4.4.
The man page setprogname.3bsd(3) is an alias of getprogname.3bsd(3).