/* -------------------------------------------------------------------- */ /* SMS Client, send messages to mobile phones and pagers */ /* */ /* test_write.c */ /* */ /* Copyright (C) 1997,1998,1999 Angelo Masci */ /* */ /* This library is free software; you can redistribute it and/or */ /* modify it under the terms of the GNU Library General Public */ /* License as published by the Free Software Foundation; either */ /* version 2 of the License, or (at your option) any later version. */ /* */ /* This library is distributed in the hope that it will be useful, */ /* but WITHOUT ANY WARRANTY; without even the implied warranty of */ /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU */ /* Library General Public License for more details. */ /* */ /* You should have received a copy of the GNU Library General Public */ /* License along with this library; if not, write to the Free */ /* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* */ /* You can contact the author at this e-mail address: */ /* */ /* angelo@styx.demon.co.uk */ /* */ /* -------------------------------------------------------------------- */ /* $Id$ -------------------------------------------------------------------- */ #include #include #include #include #include /* -------------------------------------------------------------------- */ /* -------------------------------------------------------------------- */ int main(int argc, char **argv) { int fd; if (argc != 2) { fprintf(stderr, "Usage: %s \n", argv[0]); exit(-1); } fd = open(argv[1], O_RDWR|O_NONBLOCK); if (fd == -1) { fprintf(stderr, "Error: Opening file '%s'\n", argv[1]); exit(-1); } if (write(fd, " ", 1) == -1) { fprintf(stderr, "Error: write() failed\n"); exit(-1); } close(fd); return 0; }