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Manual Section... (3) - page: program_invocation_name
NAME
program_invocation_name, program_invocation_short_name - obtain name used to invoke calling programSYNOPSIS
#define _GNU_SOURCE #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 similar information.SEE ALSO
proc(5), feature_test_macros(7)COLOPHON
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Time: 15:26:54 GMT, June 11, 2010