Linux command

检查服务器

Check process with filter with filtertext

bash

ps -aux | grep filtertext

Print Working Directory（打印工作目录）

pwd

Look for common service ports

ss -tlnp | grep -E ':(80|443|22|25|3306|5432|27017|6379|8080)'
netstat -tulpn 2>/dev/null | grep LISTEN

Quick heuristic approach:

# Run this to get a snapshot
echo "=== LOAD ===" && uptime && \
echo -e "\n=== TOP 5 CPU PROCESSES ===" && ps aux --sort=-%cpu | head -6 && \
echo -e "\n=== LISTENING PORTS ===" && ss -tlnp | tail -n +2 && \
echo -e "\n=== LIKELY SERVICES ===" && systemctl list-units --type=service --state=running | grep -E '(web|db|app|proxy|docker|kube|nginx|apache|mysql|postgres|redis)'

Common mock response

=== LOAD ===

11:23:45 up 57 days, 23 min, 1 user, load average: 0.13, 0.23, 0.20

=== TOP 5 CPU PROCESSES ===

USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND postgres 3200956 5.2 18.4 9444872 6021656 ? Ss 09:31 5:56 postgres: s_rpt_app ewallet_reporting 10.51.121.102(63056) idle

root 3221894 4.2 0.4 630008 159036 ? Ssl 11:21 0:05 /usr/libexec/packagekitd

postgres 3201517 0.5 22.4 9533624 7328756 ? Ss 09:34 0:38 postgres: s_rpt_app ewallet_reporting 10.51.121.102(63119) idle

postgres 145481 0.3 0.0 9413412 14464 ? Ss Mar27 208:08 /usr/pgsql-17/bin/postgres

root 1111 0.1 0.0 458568 8960 ? Ssl Mar17 131:11 /usr/bin/vmtoolsd

=== LISTENING PORTS ===

LISTEN 0 4096 127.0.0.1:631 0.0.0.0:* users:(("cupsd",pid=1180,fd=7))

LISTEN 0 4096 0.0.0.0:5432 0.0.0.0:* users:(("postgres",pid=145481,fd=7))

LISTEN 0 128 0.0.0.0:22 0.0.0.0:* users:(("sshd",pid=1192,fd=3))

LISTEN 0 4096 [::]:5432 [::]😗 users:(("postgres",pid=145481,fd=8))

LISTEN 0 4096 [::1]:631 [::]😗 users:(("cupsd",pid=1180,fd=6))

LISTEN 0 128 [::]:22 [::]😗 users:(("sshd",pid=1192,fd=4))

=== LIKELY SERVICES ===
dbus-broker.service loaded active running D-Bus System Message Bus

Linux command ​

检查服务器 ​

Linux command

检查服务器