program_invocation_name(3) — Linux manual page


INVOCATION_NAME(3)        Linux Programmer's Manual       INVOCATION_NAME(3)

NAME         top

       program_invocation_name,  program_invocation_short_name - obtain name
       used to invoke calling program

SYNOPSIS         top

       #define _GNU_SOURCE         /* See feature_test_macros(7) */
       #include <errno.h>

       extern char *program_invocation_name;
       extern char *program_invocation_short_name;

DESCRIPTION         top

       program_invocation_name contains the name that was used to invoke the
       calling program.  This is the same as the value of argv[0] in main(),
       with the difference that the scope of program_invocation_name is

       program_invocation_short_name contains the basename component of name
       that was used to invoke the calling program.  That is, it is the same
       value as program_invocation_name, with all text up to and including
       the final slash (/), if any, removed.

       These variables are automatically initialized by the glibc run-time
       startup code.

CONFORMING TO         top

       These variables are GNU extensions, and should not be used in
       programs intended to be portable.

NOTES         top

       The Linux-specific /proc/[number]/cmdline file provides access to
       similar information.

SEE ALSO         top


COLOPHON         top

       This page is part of release 5.09 of the Linux man-pages project.  A
       description of the project, information about reporting bugs, and the
       latest version of this page, can be found at

GNU                              2017-09-15               INVOCATION_NAME(3)

Pages that refer to this page: error(3)error_at_line(3)error_message_count(3)error_one_per_line(3)error_print_progname(3)