1 files changed, 94 insertions, 0 deletions
diff --git a/examples/loadables/printenv.c b/examples/loadables/printenv.c
new file mode 100644
index 0000000..8c7f720
--- /dev/null
+++ b/examples/loadables/printenv.c
@@ -0,0 +1,94 @@
+/*
+ * 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)
+	{
+	CASE_HELPOPT;
+	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
+};