toaruos/apps/logname.c
2018-10-09 20:35:53 +09:00

23 lines
567 B
C

/* vim: tabstop=4 shiftwidth=4 noexpandtab
* This file is part of ToaruOS and is released under the terms
* of the NCSA / University of Illinois License - see LICENSE.md
* Copyright (C) 2018 K. Lange
*
* logname - Effectively the same as whoami, but for compliance
* with POSIX, this uses getlogin().
*/
#include <unistd.h>
#include <stdio.h>
int main(int argc, char ** argv) {
char * name = getlogin();
if (!name) {
fprintf(stderr, "%s: failed to determine login name\n", argv[0]);
return 1;
}
fprintf(stdout, "%s\n", name);
return 0;
}