[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH] add clear screen command
From: |
Carlos Roberto do Nascimento Costa |
Subject: |
[PATCH] add clear screen command |
Date: |
Wed, 08 Apr 2009 16:04:19 -0300 |
User-agent: |
Thunderbird 2.0.0.21 (X11/20090318) |
Hello,
This simple patch will add a new command to clear the terminal screen. Very
useful on the command-line.
Best Regards,
--
Carlos Roberto do Nascimento Costa
e-mail: address@hidden
IBM - Linux Technology Center Brasil
Index: conf/common.rmk
===================================================================
--- conf/common.rmk (revision 2070)
+++ conf/common.rmk (working copy)
@@ -332,7 +332,7 @@
# Commands.
pkglib_MODULES += minicmd.mod extcmd.mod hello.mod handler.mod \
- ls.mod cmp.mod cat.mod help.mod search.mod \
+ ls.mod cmp.mod cat.mod help.mod search.mod clear.mod \
loopback.mod fs_uuid.mod configfile.mod echo.mod \
terminfo.mod test.mod blocklist.mod hexdump.mod \
read.mod sleep.mod loadenv.mod crc.mod parttool.mod pcpart.mod
@@ -382,6 +382,11 @@
cat_mod_CFLAGS = $(COMMON_CFLAGS)
cat_mod_LDFLAGS = $(COMMON_LDFLAGS)
+# For clear.mod
+clear_mod_SOURCES = commands/clear.c
+clear_mod_CFLAGS = $(COMMON_CFLAGS)
+clear_mod_LDFLAGS = $(COMMON_LDFLAGS)
+
# For echo.mod
echo_mod_SOURCES = commands/echo.c
echo_mod_CFLAGS = $(COMMON_CFLAGS)
Index: commands/clear.c
===================================================================
--- commands/clear.c (revision 0)
+++ commands/clear.c (revision 0)
@@ -0,0 +1,50 @@
+/* clear.c - command to clear the terminal screen. */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2003,2007 Free Software Foundation, Inc.
+ * Copyright (C) 2003 NIIBE Yutaka <address@hidden>
+ *
+ * GRUB 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.
+ *
+ * GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/types.h>
+#include <grub/misc.h>
+#include <grub/err.h>
+#include <grub/dl.h>
+#include <grub/term.h>
+#include <grub/command.h>
+
+
+static grub_err_t
+grub_cmd_clear (struct grub_extcmd *cmd __attribute__ ((unused)),
+ int argc __attribute__ ((unused)),
+ char **args __attribute__ ((unused)))
+{
+ grub_cls ();
+ return 0;
+}
+
+static grub_command_t cmd;
+
+GRUB_MOD_INIT(clear)
+{
+ (void)mod; /* To stop warning. */
+ cmd = grub_register_command ("clear", grub_cmd_clear,
+ 0, "Clear the terminal screen.");
+}
+
+GRUB_MOD_FINI(clear)
+{
+ grub_unregister_extcmd (cmd);
+}