program_invocation_name(3) Library Functions Manual program_invocation_name(3) 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. STANDARDS 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) Linux man-pages 6.03 2022-10-30 program_invocation_name(3)
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