1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
/*
# set0.c - Set $0, the program name.
#
# Copyright (C) 2008 Rocky Bernstein rocky@gnu.org
#
# Bash 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, or (at your option) any later
# version.
#
# Bash 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 Bash; see the file COPYING. If not, write to the Free Software
# Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA.
#
To install after compiling:
cd *this directory*
enable -f ./set0 set0
*/
#include "builtins.h"
#include "shell.h"
#include <stdio.h>
char *set0_doc[] = {
"Set $0, the program name.",
NULL
};
/* See defined_doc string above for what this does. */
static int set0_builtin (WORD_LIST *list)
{
SHELL_VAR *v;
/* Check parameters: there should be exactly one. */
if (list == 0) {
builtin_error ("An argument (a variable name) is required.");
builtin_usage ();
return (EX_USAGE);
} else if (list->next) {
builtin_error ("More than one argument passed; we want exactly one.");
builtin_usage ();
return (EX_USAGE);
}
if (dollar_vars[0]) free (dollar_vars[0]);
dollar_vars[0] = savestring(list->word->word);
return EXECUTION_SUCCESS;
}
struct builtin set0_struct = {
"set0", /* builtin name */
set0_builtin, /* function implementing the builtin */
BUILTIN_ENABLED, /* initial flags for builtin */
set0_doc, /* array of long documentation strings. */
"set0 STRING", /* usage synopsis; becomes short_doc */
0 /* reserved for internal use */
};
|
