diff --git a/integration-test/script/jboss_pid.sh b/integration-test/script/jboss_pid.sh
index 81b85b68..7ab1f494 100755
--- a/integration-test/script/jboss_pid.sh
+++ b/integration-test/script/jboss_pid.sh
@@ -1,2 +1,19 @@
-#!/bin/bash
-pgrep -f 'Main|jboss-modules.jar' | tr -d '\n'
\ No newline at end of file
+#!/bin/sh
+
+TARGET_PATTERN='Main|jboss-modules.jar'
+
+for pid_dir in /proc/*; do
+    if [ -d "$pid_dir" ] && ! [ -z "$(echo "$pid_dir" | sed 's|/proc/||' | grep -E '^[0-9]+$')" ]; then
+        PID=$(echo "$pid_dir" | sed 's|/proc/||')
+        CMDLINE_FILE="$pid_dir/cmdline"
+        if [ -r "$CMDLINE_FILE" ]; then
+            FULL_CMD=$(sed 's/\x0/ /g' "$CMDLINE_FILE")
+            if [ -z "$FULL_CMD" ]; then
+                continue
+            fi
+            if echo "$FULL_CMD" | grep -E -q "$TARGET_PATTERN"; then
+                echo $PID
+            fi
+        fi
+    fi
+done
\ No newline at end of file