Linux Privilege Escalation Awesome Script.
Download .sh or binary from Github.com
wget https://raw.githubusercontent.com/carlospolop/privilege-escalation-awesome-scripts-suite/master/linPEAS/linpeas.sh
curl https://raw.githubusercontent.com/carlospolop/privilege-escalation-awesome-scripts-suite/master/linPEAS/linpeas.sh > linpeas.sh
Check the checklist on book.hacktricks.xyz