3.User
User Info
id
whoami
users
groups
User history
cat /home/<user>/.bash_history
Find file owned by user
find <directory-location> -user <username> -name <file-name>
Find file owned by a group
find <directory-location> -group <group-name> -name <file-name>
Find file owned by a group (executable)
find <directory-location> -executable -group <group-name>