74 lines
1.6 KiB
C
74 lines
1.6 KiB
C
/* logname - print login name of current user */
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/*
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Copyright (C) 1999-2009 Free Software Foundation, Inc.
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This file is part of GNU Bash.
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Bash is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Bash is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Bash. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#if defined (HAVE_UNISTD_H)
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# include <unistd.h>
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#endif
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#include <stdio.h>
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#include <errno.h>
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#include "builtins.h"
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#include "shell.h"
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#include "common.h"
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#if !defined (errno)
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extern int errno;
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#endif
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int
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logname_builtin (list)
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WORD_LIST *list;
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{
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char *np;
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if (no_options (list))
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return (EX_USAGE);
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np = getlogin ();
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if (np == 0)
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{
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builtin_error ("cannot find username: %s", strerror (errno));
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return (EXECUTION_FAILURE);
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}
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printf ("%s\n", np);
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return (EXECUTION_SUCCESS);
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}
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char *logname_doc[] = {
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"Display user login name.",
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"",
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"Write the current user's login name to the standard output",
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"and exit. logname ignores the LOGNAME and USER variables.",
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"logname ignores any non-option arguments.",
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(char *)NULL
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};
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struct builtin logname_struct = {
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"logname",
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logname_builtin,
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BUILTIN_ENABLED,
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logname_doc,
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"logname",
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0
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};
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