cat /ect/passwd

사용자리스트

cat /ect/passwd

bash사용자출력

grp /bin/bash /etc/passwd | cut -f1 -d:

참조 : 

https://zetawiki.com/wiki/%EB%A6%AC%EB%88%85%EC%8A%A4_%EA%B3%84%EC%A0%95_%EB%AA%A9%EB%A1%9D_%EB%B3%B4%EA%B8%B0