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



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

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.

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

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

SEE ALSO
       proc(5)

COLOPHON
       This  page  is  part of release 4.16 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
       https://www.kernel.org/doc/man-pages/.



GNU                               2017-09-15                INVOCATION_NAME(3)