1、# [在Linux中查看所有正在运行的进程](https://blog.csdn.net/qq_25948717/article/details/80909911) >ps aux | less >top 2、查看端口是否开放 >lsof -i:80 3、# [linux 内存占用过大分析](https://blog.csdn.net/xiongzhichao/article/details/60139548) [# Linux终端查看最消耗CPU内存的进程](https://www.linuxprobe.com/linux-sort-max-mc.html "Linux终端查看最消耗CPU内存的进程") >free -g >ps aux|awk '{sum+=$6} END {print sum/1024}' >cat /proc/meminfo