sudo: unable to resolve host [hostname]

hostname 변경할 때 작업을 하다 말아서 그럼

PolypiaWebSErver
/etc/hostname
PolypiaWebSErver

여기만 변경했으면.. 오류남

/etc/hosts
여기
127.0.0.1 PolypiaWebSErver

 

 

 

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