| ed36b0a2 |
1 | /* -*-c-*- |
| 2 | * |
| 3 | * $Id: ushell.c,v 1.1 1999/04/20 00:19:04 mdw Exp $ |
| 4 | * |
| 5 | * Extract a user's shell |
| 6 | * |
| 7 | * (c) 1999 Mark Wooding |
| 8 | */ |
| 9 | |
| 10 | /*----- Licensing notice --------------------------------------------------* |
| 11 | * |
| 12 | * This file is part of ushell. |
| 13 | * |
| 14 | * ushell is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License as published by |
| 16 | * the Free Software Foundation; either version 2 of the License, or |
| 17 | * (at your option) any later version. |
| 18 | * |
| 19 | * ushell is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License |
| 25 | * along with ushell; if not, write to the Free Software Foundation, |
| 26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 27 | */ |
| 28 | |
| 29 | /*----- Revision history --------------------------------------------------* |
| 30 | * |
| 31 | * $Log: ushell.c,v $ |
| 32 | * Revision 1.1 1999/04/20 00:19:04 mdw |
| 33 | * Initial revision |
| 34 | * |
| 35 | */ |
| 36 | |
| 37 | /*----- Header files ------------------------------------------------------*/ |
| 38 | |
| 39 | #include <errno.h> |
| 40 | #include <stdio.h> |
| 41 | #include <stdlib.h> |
| 42 | #include <string.h> |
| 43 | #include <pwd.h> |
| 44 | #include <sys/types.h> |
| 45 | #include <unistd.h> |
| 46 | |
| 47 | /*----- Main code ---------------------------------------------------------*/ |
| 48 | |
| 49 | static const char *quis; |
| 50 | |
| 51 | int main(int argc, char *argv[]) |
| 52 | { |
| 53 | struct passwd *pw; |
| 54 | |
| 55 | /* --- Resolve the program name --- */ |
| 56 | |
| 57 | { |
| 58 | char *p, *q; |
| 59 | p = argv[0]; |
| 60 | for (q = argv[0]; *q; q++) { |
| 61 | if (*q == '/') |
| 62 | p = q + 1; |
| 63 | } |
| 64 | quis = p; |
| 65 | } |
| 66 | |
| 67 | /* --- Get the argument name --- */ |
| 68 | |
| 69 | if (argc != 2) { |
| 70 | fprintf(stderr, "Usage: %s username\n", quis); |
| 71 | exit(EXIT_FAILURE); |
| 72 | } |
| 73 | |
| 74 | /* --- Read the user information --- */ |
| 75 | |
| 76 | if ((pw = getpwnam(argv[1])) == 0) { |
| 77 | fprintf(stderr, "%s: user `%s' doesn't exist", quis, argv[1]); |
| 78 | exit(EXIT_FAILURE); |
| 79 | } |
| 80 | |
| 81 | /* --- Done --- */ |
| 82 | |
| 83 | puts(pw->pw_shell); |
| 84 | return (0); |
| 85 | } |
| 86 | |
| 87 | /*----- That's all, folks -------------------------------------------------*/ |
~mdw / shells / blame