id

cat /etc/passwd

hostname

cat /etc/issue → OS info

cat /etc/os-release → OS info

uname -a → OS info

ps aux → List processes

ip a

route →routing table

route1 →routing table

ss -anp → active connections on linux

cat /etc/iptables/rules.v4

ls -lah /etc/cron* → cron jobs (scheduled tasks)

crontab -l (current user)

sudo crontab -l (root user)

dpkg -l (list installed packages)

find / -writable -type d 2>/dev/null →listing writable directories

cat /etc/fstab

mount