diff --git a/cmd.h b/cmd.h
new file mode 100644
index 0000000..5ca8fcf
--- /dev/null
+++ b/cmd.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
+ *
+ * This program 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.
+ *
+ * This program is distributed in the hope that it would 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 this program; if not, write the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#ifndef __COMMAND_H__
+#define __COMMAND_H__
+
+#define CMD_FLAG_GLOBAL	((int)0x80000000)	/* don't iterate "args" */
+
+typedef int (*cfunc_t)(int argc, char **argv);
+typedef void (*helpfunc_t)(void);
+
+typedef struct cmdinfo {
+	const char	*name;
+	const char	*altname;
+	cfunc_t		cfunc;
+	int		argmin;
+	int		argmax;
+	int		canpush;
+	int		flags;
+	const char	*args;
+	const char	*oneline;
+	helpfunc_t      help;
+} cmdinfo_t;
+
+extern cmdinfo_t	*cmdtab;
+extern int		ncmds;
+
+extern void		help_init(void);
+extern void		quit_init(void);
+
+typedef int (*argsfunc_t)(int index);
+typedef int (*checkfunc_t)(const cmdinfo_t *ci);
+
+extern void		add_command(const cmdinfo_t *ci);
+extern void		add_user_command(char *optarg);
+extern void		add_args_command(argsfunc_t af);
+extern void		add_check_command(checkfunc_t cf);
+
+extern const cmdinfo_t	*find_command(const char *cmd);
+
+extern void		command_loop(void);
+extern int		command_usage(const cmdinfo_t *ci);
+extern int		command(const cmdinfo_t *ci, int argc, char **argv);
+
+/* from input.h */
+extern char	**breakline(char *input, int *count);
+extern void	doneline(char *input, char **vec);
+extern char	*fetchline(void);
+
+extern long long cvtnum(char *s);
+extern void	cvtstr(double value, char *str, size_t sz);
+
+extern struct timeval tsub(struct timeval t1, struct timeval t2);
+extern double	tdiv(double value, struct timeval tv);
+
+enum {
+	DEFAULT_TIME		= 0x0,
+	TERSE_FIXED_TIME	= 0x1,
+	VERBOSE_FIXED_TIME	= 0x2
+};
+
+extern void	timestr(struct timeval *tv, char *str, size_t sz, int flags);
+
+#endif	/* __COMMAND_H__ */