Проект OpenNet: MAN setprogname (3) Библиотечные вызовы (FreeBSD и Linux)

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setprogname (3)

>> setprogname (3) ( FreeBSD man: Библиотечные вызовы )

BSD mandoc

NAME



getprogname

 
setprogname

 - get or set the program name

LIBRARY

Lb libc

SYNOPSIS

#include <stdlib.h>
const char * getprogname (void);
void setprogname (const char *progname);

DESCRIPTION

The getprogname ();
and setprogname ();
functions manipulate the name of the current program. They are used by error-reporting routines to produce consistent output.

The getprogname ();
function returns the name of the program. If the name has not been set yet, it will return NULL

The setprogname ();
function sets the name of the program to be the last component of the Fa 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 Fx , 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.

HISTORY

These functions first appeared in Nx 1.6 , and made their way into Fx 4.4 .

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Created 1996-2024 by Maxim Chirkov
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