fix: deb安装前systemctl stop的操作判断

debbuild/DEBIAN/preinst

@@ -1,18 +1,19 @@
 # !/bin/bash
 
-FERootDir=/usr/local/omc/htdocs/front
-
 echo -n "Stopping OMC service ... "
-systemctl stop restagent.service
-systemctl stop crontask.service
-systemctl stop sshsvc.service
-systemctl stop captrace.service
+systemctl daemon-reload
+if systemctl list-units --type=service --all | grep -q 'restagent.service'; then
+    systemctl stop restagent.service
+    systemctl stop crontask.service
+    systemctl stop sshsvc.service
+    systemctl stop captrace.service
+fi
 echo "done"
 
+FERootDir=/usr/local/omc/htdocs/front
+
 # apt-get install zip
 # clear front-end old hash js files
 rm -rf ${FERootDir}/assets
 rm -rf ${FERootDir}/js
 rm -rf ${FERootDir}/index.*.js
-
-