program_invocation_name man page on Archlinux

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

       program_invocation_name,	 program_invocation_short_name	-  obtain name
       used to invoke calling program

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

       extern char *program_invocation_name;
       extern char *program_invocation_short_name;

       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.

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

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


       This  page  is  part of release 3.65 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at

GNU				  2006-04-29		    INVOCATION_NAME(3)

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