93 lines
2 KiB
C
93 lines
2 KiB
C
/*
|
|
* printenv -- minimal builtin clone of BSD printenv(1).
|
|
*
|
|
* usage: printenv [varname]
|
|
*
|
|
*/
|
|
|
|
/*
|
|
Copyright (C) 1999-2009 Free Software Foundation, Inc.
|
|
|
|
This file is part of GNU Bash.
|
|
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 3 of the License, 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. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <stdio.h>
|
|
|
|
#include "builtins.h"
|
|
#include "shell.h"
|
|
#include "bashgetopt.h"
|
|
#include "common.h"
|
|
|
|
extern char **export_env;
|
|
|
|
int
|
|
printenv_builtin (list)
|
|
WORD_LIST *list;
|
|
{
|
|
register char **envp;
|
|
int opt;
|
|
SHELL_VAR *var;
|
|
|
|
reset_internal_getopt ();
|
|
while ((opt = internal_getopt (list, "")) != -1)
|
|
{
|
|
switch (opt)
|
|
{
|
|
default:
|
|
builtin_usage ();
|
|
return (EX_USAGE);
|
|
}
|
|
}
|
|
list = loptend;
|
|
|
|
/* printenv */
|
|
if (list == 0)
|
|
{
|
|
maybe_make_export_env (); /* this allows minimal code */
|
|
for (envp = export_env; *envp; envp++)
|
|
printf ("%s\n", *envp);
|
|
return (EXECUTION_SUCCESS);
|
|
}
|
|
|
|
/* printenv varname */
|
|
var = find_variable (list->word->word);
|
|
if (var == 0 || (exported_p (var) == 0))
|
|
return (EXECUTION_FAILURE);
|
|
|
|
if (function_p (var))
|
|
print_var_function (var);
|
|
else
|
|
print_var_value (var, 0);
|
|
|
|
printf("\n");
|
|
return (EXECUTION_SUCCESS);
|
|
}
|
|
|
|
char *printenv_doc[] = {
|
|
"Display environment.",
|
|
"",
|
|
"Print names and values of environment variables",
|
|
(char *)NULL
|
|
};
|
|
|
|
struct builtin printenv_struct = {
|
|
"printenv",
|
|
printenv_builtin,
|
|
BUILTIN_ENABLED,
|
|
printenv_doc,
|
|
"printenv [varname]",
|
|
0
|
|
};
|