Linux enumeration

cat /etc/*-release * cat /proc/version
hostname
uname -a
cat /etc/issue
ps wuax or ps ajxf or ps -A
printenv or env
sudo -l
id
whoami
groups and getent group
cat /etc/passwd
history
ip or ifconfig
ip route
netstat -natup or ss natup
netstat -s and netstat -i
lsof -i
Find SUID permissions on files and dirs
find / -perm /6000 -ls 2>/dev/null
Find writeables dirs
find / -writable -type d 2>/dev/null or find / -perm -o w -type d 2>/dev/null
find / -perm -o x -type d 2>/dev/null
Find writeable subdirs find / -writable 2>/dev/null | cut -d "/" -f 2,3 | grep -v proc | sort -u