diff --git a/test/integration-test-main.sh b/test/integration-test-main.sh
index 1c32b2e..23bb715 100755
--- a/test/integration-test-main.sh
+++ b/test/integration-test-main.sh
@@ -2386,8 +2386,7 @@ function test_write_data_with_skip() {
     #
     # delete cache file if using cache
     #
-    # shellcheck disable=SC2009
-    if ps u -p "${S3FS_PID}" | grep -q use_cache; then
+    if s3fs_args | grep -q use_cache; then
         rm -f "${CACHE_DIR}/${TEST_BUCKET_1}/${CACHE_TESTRUN_DIR}/${_SKIPWRITE_FILE}"
         rm -f "${CACHE_DIR}/.${TEST_BUCKET_1}.stat/${CACHE_TESTRUN_DIR}/${_SKIPWRITE_FILE}"
     fi
@@ -2403,8 +2402,7 @@ function test_write_data_with_skip() {
     # [NOTE]
     # This test uses the file used in the previous test as an existing file.
     #
-    # shellcheck disable=SC2009
-    if ps u -p "${S3FS_PID}" | grep -q use_cache; then
+    if s3fs_args | grep -q use_cache; then
         rm -f "${CACHE_DIR}/${TEST_BUCKET_1}/${CACHE_TESTRUN_DIR}/${_SKIPWRITE_FILE}"
         rm -f "${CACHE_DIR}/.${TEST_BUCKET_1}.stat/${CACHE_TESTRUN_DIR}/${_SKIPWRITE_FILE}"
     fi
@@ -2441,8 +2439,7 @@ function test_write_data_with_skip() {
     #
     # delete cache file if using cache
     #
-    # shellcheck disable=SC2009
-    if ps u -p "${S3FS_PID}" | grep -q use_cache; then
+    if s3fs_args | grep -q use_cache; then
         rm -f "${CACHE_DIR}/${TEST_BUCKET_1}/${CACHE_TESTRUN_DIR}/${_SKIPWRITE_FILE}"
         rm -f "${CACHE_DIR}/.${TEST_BUCKET_1}.stat/${CACHE_TESTRUN_DIR}/${_SKIPWRITE_FILE}"
     fi
@@ -2559,15 +2556,13 @@ function test_file_names_longer_than_posix() {
 }
 
 function add_all_tests {
-    # shellcheck disable=SC2009
-    if ps u -p "${S3FS_PID}" | grep -q use_cache; then
+    if s3fs_args | grep -q use_cache; then
         add_tests test_cache_file_stat
         add_tests test_zero_cache_file_stat
     else
         add_tests test_file_names_longer_than_posix
     fi
-    # shellcheck disable=SC2009
-    if ! ps u -p "${S3FS_PID}" | grep -q ensure_diskfree && ! uname | grep -q Darwin; then
+    if ! s3fs_args | grep -q ensure_diskfree && ! uname | grep -q Darwin; then
         add_tests test_clean_up_cache
     fi
     add_tests test_create_empty_file
@@ -2628,12 +2623,10 @@ function add_all_tests {
     fi
     add_tests test_update_directory_time_subdir
     add_tests test_update_chmod_opened_file
-    # shellcheck disable=SC2009
-    if ps u -p "${S3FS_PID}" | grep -q update_parent_dir_stat; then
+    if s3fs_args | grep -q update_parent_dir_stat; then
         add_tests test_update_parent_directory_time
     fi
-    # shellcheck disable=SC2009
-    if ! ps u -p "${S3FS_PID}" | grep -q use_xattr; then
+    if ! s3fs_args | grep -q use_xattr; then
         add_tests test_posix_acl
     fi
 
@@ -2654,8 +2647,7 @@ function add_all_tests {
     add_tests test_not_existed_dir_obj
     add_tests test_ut_ossfs
     add_tests test_cr_filename
-    # shellcheck disable=SC2009
-    if ! ps u -p "${S3FS_PID}" | grep -q ensure_diskfree && ! uname | grep -q Darwin; then
+    if ! s3fs_args | grep -q ensure_diskfree && ! uname | grep -q Darwin; then
         add_tests test_ensurespace_move_file
     fi
     add_tests test_write_data_with_skip
diff --git a/test/test-utils.sh b/test/test-utils.sh
index 531c4a0..e97c6a9 100644
--- a/test/test-utils.sh
+++ b/test/test-utils.sh
@@ -336,13 +336,11 @@ function aws_cli() {
     fi
 
     if [ "$1" = "s3" ] && [ "$2" != "ls" ] && [ "$2" != "mb" ]; then
-        # shellcheck disable=SC2009
-        if ps u -p "${S3FS_PID}" | grep -q use_sse=custom; then
+        if s3fs_args | grep -q use_sse=custom; then
             FLAGS="${FLAGS} --sse-c AES256 --sse-c-key fileb:///tmp/ssekey.bin"
         fi
     elif [ "$1" = "s3api" ] && [ "$2" != "head-bucket" ]; then
-        # shellcheck disable=SC2009
-        if ps u -p "${S3FS_PID}" | grep -q use_sse=custom; then
+        if s3fs_args | grep -q use_sse=custom; then
             FLAGS="${FLAGS} --sse-customer-algorithm AES256 --sse-customer-key $(cat /tmp/ssekey) --sse-customer-key-md5 $(cat /tmp/ssekeymd5)"
         fi
     fi
@@ -378,6 +376,10 @@ function make_random_string() {
     return 0
 }
 
+function s3fs_args() {
+    ps -o args -p "${S3FS_PID}" --no-headers
+}
+
 #
 # Local variables:
 # tab-width: 4