diff options
author | Erik Andersen <andersen@codepoet.org> | 2000-01-16 01:28:50 +0300 |
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committer | Erik Andersen <andersen@codepoet.org> | 2000-01-16 01:28:50 +0300 |
commit | 3163821967821518cfa4c4315f775ec5301bb023 (patch) | |
tree | fe0c764cb41cc3ea86c3dcd270e48fa6a1abebcd /coreutils/tty.c | |
parent | b7cc49d992ed9a5a59261096012e0b4a811bb7f4 (diff) |
Sync up busybox with the latest and greatest. This is not stuff for
the Embedix release.
-Erik
Diffstat (limited to 'coreutils/tty.c')
-rw-r--r-- | coreutils/tty.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/coreutils/tty.c b/coreutils/tty.c new file mode 100644 index 000000000..83abaffb5 --- /dev/null +++ b/coreutils/tty.c @@ -0,0 +1,42 @@ +/* + * Mini tty implementation for busybox + * + * Copyright (C) 2000 Edward Betts <edward@debian.org>. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include "internal.h" +#include <stdio.h> +#include <sys/types.h> + +static const char tty_usage[] = "tty\n\n" +"Print the file name of the terminal connected to standard input.\n" +"\t-s\tprint nothing, only return an exit status\n"; + +extern int tty_main(int argc, char **argv) { + char *tty; + + if (argc > 1) { + if (argv[1][0] != '-' || argv[1][1] != 's') usage (tty_usage); + } + else { + tty = ttyname (0); + if (tty) puts (tty); + else puts ("not a tty"); + } + exit (isatty (0) ? TRUE : FALSE); +} |