下面示例是启动名字叫modbus_master 的进程,先查找有没有启动,没有启动则进入相应目录启动
'''
!/bin/sh
modbus_pid=ps -ef | grep modbus_master | grep -v grep | awk '{print $1}'
if [ -z "$modbus_pid" ];
then
echo "[ not find modbus_master pid ]"
cd /usr/bin
modbus_master&
echo "[modbus_master start]"
else
echo "find result: $modbus_pid "
fi
'''









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