ps 查看状态 # 查看内存使用情况 ps aux | grep -v PID | sort -rn -k 4 | head 判断进程是否存在 command="httpd" running=`ps ax | grep -v grep | grep $command | wc -l` if [ $running -gt 0 ]; then echo "Command is running" else echo "Command is not running" fi Linux/Unix command to determine if process is running?