fix: 优化omcd脚本，增加服务存在性检查

linux/usr/local/bin/omcd

@@ -1,28 +1,53 @@
 #!/bin/bash
 
 ServiceList="omc sshsvc"
+BinDir="/usr/local/bin"
+
+# Check if the service exists
+check_service() {
+    systemctl list-unit-files | grep -q "$1.service"
+    return $?
+}
 
 case "$1" in
     start)
-        for v in $ServiceList;do
+        for v in $ServiceList; do
+            if ! check_service "$v"; then
+                echo "Service $v does not exist"
+                continue
+            fi
             systemctl start $v
             if [ $? = 0 ]; then
-                echo "starting $v process done" 
-            fi 
+                echo "Starting $v process done"
+            else
+                echo "Failed to start $v"
+            fi
             sleep 1
         done
     ;;
     status)
-        for v in $ServiceList;do
-            systemctl status $v
+        for v in $ServiceList; do
+            if ! check_service "$v"; then
+                echo "Service $v does not exist"
+                continue
+            fi
+            echo "=== Status of $v ==="
+            systemctl status --no-pager -n 20 $v
+            echo ""
         done
     ;;
     stop)
-        for v in $ServiceList;do
-            systemctl stop $procName
+        for v in $ServiceList; do
+            if ! check_service "$v"; then
+                echo "Service $v does not exist"
+                continue
+            fi
+            systemctl stop $v
             if [ $? = 0 ]; then
-                echo "Stopping $v process done" 
-            fi 
+                echo "Stopping $v process done"
+            else
+                echo "Failed to stop $v"
+            fi
         done
     ;;
     restart)
@@ -31,9 +56,12 @@ case "$1" in
         $0 start
     ;;
     version)
-        local BinDir=/usr/local/bin
-        for v in $ServiceList;do
-            $BinDir/$v --version
+        for v in $ServiceList; do
+            if [ -x "$BinDir/$v" ]; then
+                $BinDir/$v --version
+            else
+                echo "$v binary not found in $BinDir"
+            fi
         done
     ;;
     *)