| .\" Copyright (C) 2006 Michael Kerrisk <mtk.manpages@gmail.com> |
| .\" |
| .\" %%%LICENSE_START(PERMISSIVE_MISC) |
| .\" Permission is hereby granted, free of charge, to any person obtaining |
| .\" a copy of this software and associated documentation files (the |
| .\" "Software"), to deal in the Software without restriction, including |
| .\" without limitation the rights to use, copy, modify, merge, publish, |
| .\" distribute, sublicense, and/or sell copies of the Software, and to |
| .\" permit persons to whom the Software is furnished to do so, subject to |
| .\" the following conditions: |
| .\" |
| .\" The above copyright notice and this permission notice shall be |
| .\" included in all copies or substantial portions of the Software. |
| .\" |
| .\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| .\" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| .\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| .\" IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| .\" CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| .\" TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| .\" SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| .\" %%%LICENSE_END |
| .\" |
| .TH INVOCATION_NAME 3 2017-09-15 "GNU" "Linux Programmer's Manual" |
| .SH NAME |
| program_invocation_name, program_invocation_short_name \- \ |
| obtain name used to invoke calling program |
| .SH SYNOPSIS |
| .nf |
| .BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */" |
| .B #include <errno.h> |
| .PP |
| .BI "extern char *" program_invocation_name ; |
| .BI "extern char *" program_invocation_short_name ; |
| .fi |
| .SH DESCRIPTION |
| .I program_invocation_name |
| contains the name that was used to invoke the calling program. |
| This is the same as the value of |
| .I argv[0] |
| in |
| .IR main (), |
| with the difference that the scope of |
| .I program_invocation_name |
| is global. |
| .PP |
| .I 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 |
| .IR program_invocation_name , |
| with all text up to and including the final slash (/), if any, removed. |
| .PP |
| These variables are automatically initialized by the glibc run-time |
| startup code. |
| .SH CONFORMING TO |
| These variables are GNU extensions, and should not be |
| used in programs intended to be portable. |
| .SH NOTES |
| The Linux-specific |
| .I /proc/[number]/cmdline |
| file provides access to similar information. |
| .SH SEE ALSO |
| .BR proc (5) |