program_invocation_name(3)                            Library Functions Manual

NAME
       program_invocation_name, program_invocation_short_name - obtain name
       used to invoke calling program

LIBRARY
       Standard C library (libc, -lc)

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

       extern char *program_invocation_name;
       extern char *program_invocation_short_name;

DESCRIPTION
       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
       global.

       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.

VERSIONS
       The Linux-specific /proc/pid/cmdline file provides access to similar
       information.

STANDARDS
       GNU.

SEE ALSO
       proc(5)

Linux man-pages 6.7               2023-10-31        program_invocation_name(3)