diff --git a/runtest/commands b/runtest/commands
index b7112945b..06291f094 100644
--- a/runtest/commands
+++ b/runtest/commands
@@ -20,3 +20,4 @@ size01 size01
 sssd01 sssd01
 sssd02 sssd02
 sssd03 sssd03
+du01 du01.sh
diff --git a/testcases/commands/du/Makefile b/testcases/commands/du/Makefile
new file mode 100644
index 000000000..c1664460d
--- /dev/null
+++ b/testcases/commands/du/Makefile
@@ -0,0 +1,27 @@
+#
+# commands/du testcases Makefile.
+#
+# Copyright (c) 2015 Fujitsu Ltd.
+# Author: Zeng Linggang <zenglg.jy@cn.fujitsu.com>
+#
+# 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; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+top_srcdir		?= ../../..
+
+include $(top_srcdir)/include/mk/env_pre.mk
+
+INSTALL_TARGETS		:= du01.sh
+
+include $(top_srcdir)/include/mk/generic_leaf_target.mk
diff --git a/testcases/commands/du/du01.sh b/testcases/commands/du/du01.sh
new file mode 100755
index 000000000..2e3638568
--- /dev/null
+++ b/testcases/commands/du/du01.sh
@@ -0,0 +1,219 @@
+#!/bin/sh
+#
+# Copyright (c) 2015 Fujitsu Ltd.
+# Author: Zeng Linggang <zenglg.jy@cn.fujitsu.com>
+#
+# 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; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program 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 this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+# Test du command with some basic options.
+#
+
+TCID=du01
+TST_TOTAL=23
+. test.sh
+
+setup()
+{
+	tst_require_root
+
+	tst_check_cmds dd du stat
+
+	tst_tmpdir
+
+	ROD_SILENT dd if=/dev/zero of=testfile bs=1M count=10
+
+	ROD_SILENT mkdir -p testdir
+
+	ROD_SILENT ln -s ../testfile testdir/testfile
+
+	# Display values are in units of the first available SIZE
+	# from --block-size, and the DU_BLOCK_SIZE, BLOCK_SIZE and
+	# BLOCKSIZE environment variables. Here we need to
+	# set DU_BLOCK_SIZE to 1024 to ensure the result is expected.
+	export DU_BLOCK_SIZE=1024
+}
+
+cleanup()
+{
+	tst_rmdir
+}
+
+du_test()
+{
+	local test_return
+
+	$1 > ${TCID}.temp 2>&1
+	test_return=$?
+
+	if [ ${test_return} -ne 0 ]; then
+		grep -q -E "unrecognized option|invalid option" ${TCID}.temp
+		if [ $? -eq 0 ]; then
+			tst_resm TCONF "'$1'" "not supported."
+			return
+		else
+			tst_resm TFAIL "'$1'" "failed."
+			return
+		fi
+	fi
+
+	grep -q $2 ${TCID}.temp
+	if [ $? -eq 0 ]; then
+		tst_resm TPASS "'$1'" "passed."
+	else
+		tst_resm TFAIL "'$1'" "failed."
+	fi
+}
+
+test1()
+{
+	du_test "du" ${check1}
+}
+
+test2()
+{
+	du_test "du testfile" ${check2}
+}
+
+test3()
+{
+	du_test "du -a" ${check3}
+}
+
+test4()
+{
+	du_test "du --all" ${check3}
+}
+
+test5()
+{
+	du_test "du -B ${block_size}" ${check5}
+}
+
+test6()
+{
+	du_test "du --block-size=${block_size}" ${check5}
+}
+
+test7()
+{
+	du_test "du -b" ${check7}
+}
+
+test8()
+{
+	du_test "du --bytes" ${check7}
+}
+
+test9()
+{
+	du_test "du -c" ${check9}
+}
+
+test10()
+{
+	du_test "du --total" ${check9}
+}
+
+test11()
+{
+	du_test "du -D testdir/testfile" ${check11}
+}
+
+test12()
+{
+	du_test "du --dereference-args testdir/testfile" ${check11}
+}
+
+test13()
+{
+	du_test "du --max-depth=1" ${check1}
+}
+
+test14()
+{
+	du_test "du --human-readable" ${check14}
+}
+
+test15()
+{
+	du_test "du -k" ${check1}
+}
+
+test16()
+{
+	du_test "du -L testdir/" ${check16}
+}
+
+test17()
+{
+	du_test "du --dereference testdir/" ${check16}
+}
+
+test18()
+{
+	du_test "du -P" ${check1}
+}
+
+test19()
+{
+	du_test "du --no-dereference" ${check1}
+}
+
+test20()
+{
+	du_test "du --si" ${check20}
+}
+
+test21()
+{
+	du_test "du -s" ${check1}
+}
+
+test22()
+{
+	du_test "du --summarize" ${check1}
+}
+
+test23()
+{
+	du_test "du --exclude=testfile" ${check23}
+}
+
+setup
+TST_CLEANUP=cleanup
+
+block_size=512
+
+# The output could be different in some systems, if we use du to
+# estimate file space usage with the same filesystem and the same size.
+# So we use the approximate value to check.
+check1="10[2-3][0-9][0-9][[:space:]]\."
+check2="10[2-3][0-9][0-9][[:space:]]testfile"
+check3="0[[:space:]]\.\/testdir\/testfile"
+check5="20[4-5][0-9][0-9][[:space:]]\."
+check7="10[4-5][0-9][0-9]\{4\}[[:space:]]\."
+check9="10[2-3][0-9][0-9][[:space:]]total"
+check11="10[2-3][0-9][0-9][[:space:]]testdir\/testfile"
+check14="1[0,1]M[[:space:]]\."
+check16="10[2-3][0-9][0-9][[:space:]]testdir\/"
+check20="11M[[:space:]]\."
+check23="[0-9]\{1,2\}[[:space:]]\."
+
+for i in $(seq 1 ${TST_TOTAL})
+do
+	test$i
+done
+
+tst_exit