자꾸 password가 뜨고

bad permissions

permissions denied라고 하네요 ㅠㅠ

뭐가 잘못된걸까요

작성한 코드 및 에러 메세지

Last login: Sat Oct 8 15:18:11 on console

hong@Jinhongui-MacBookPro ~ % 

hong@Jinhongui-MacBookPro ~ % 

hong@Jinhongui-MacBookPro ~ % $ sudo chmod 400

zsh: command not found: $

hong@Jinhongui-MacBookPro ~ % sudo chmod 400             

Password:

Sorry, try again.

Password:

Sorry, try again.

Password:

sudo: 3 incorrect password attempts

hong@Jinhongui-MacBookPro ~ % 

hong@Jinhongui-MacBookPro ~ % 

hong@Jinhongui-MacBookPro ~ % ssh -i 

ssh: option requires an argument -- i

usage: ssh [-46AaCfGgKkMNnqsTtVvXxYy] [-B bind_interface]

      [-b bind_address] [-c cipher_spec] [-D [bind_address:]port]

      [-E log_file] [-e escape_char] [-F configfile] [-I pkcs11]

      [-i identity_file] [-J [user@]host[:port]] [-L address]

      [-l login_name] [-m mac_spec] [-O ctl_cmd] [-o option] [-p port]

      [-Q query_option] [-R address] [-S ctl_path] [-W host:port]

      [-w local_tun[:remote_tun]] destination [command]

hong@Jinhongui-MacBookPro ~ % /Users/hong/Desktop/sparta_mykey.pem 

zsh: permission denied: /Users/hong/Desktop/sparta_mykey.pem

hong@Jinhongui-MacBookPro ~ % 

hong@Jinhongui-MacBookPro ~ % sudo chmod 400

Password:

Sorry, try again.

Password:

Sorry, try again.

Password:

sudo: 3 incorrect password attempts

hong@Jinhongui-MacBookPro ~ % sudo chmod 400/Users/hong/Desktop/sparta_mykey.pem 

Password:

Sorry, try again.

Password:

Sorry, try again.

Password:

sudo: 3 incorrect password attempts

hong@Jinhongui-MacBookPro ~ % 

hong@Jinhongui-MacBookPro ~ % ssh -i /Users/hong/Desktop/sparta_mykey.pem ubuntu@13.124.28.246

The authenticity of host '13.124.28.246 (13.124.28.246)' can't be established.

ED25519 key fingerprint is SHA256:er1KJ5cF6aX3vKrVcdjXI8ufCBYRT8ekC92dF2ts3WU.

This key is not known by any other names

Are you sure you want to continue connecting (yes/no/[fingerprint])? yes

Warning: Permanently added '13.124.28.246' (ED25519) to the list of known hosts.

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

@     WARNING: UNPROTECTED PRIVATE KEY FILE!     @

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

Permissions 0644 for '/Users/hong/Desktop/sparta_mykey.pem' are too open.

It is required that your private key files are NOT accessible by others.

This private key will be ignored.

Load key "/Users/hong/Desktop/sparta_mykey.pem": bad permissions

ubuntu@13.124.28.246: Permission denied (publickey).

hong@Jinhongui-MacBookPro ~ % 

hong@Jinhongui-MacBookPro ~ % sudo chmod 400 /Users/hong/Desktop/sparta_mykey.pem 

Password:

Sorry, try again.

Password:

Sorry, try again.

Password:

sudo: 3 incorrect password attempts

hong@Jinhongui-MacBookPro ~ % ssh -i /Users/hong/Desktop/sparta_mykey.pem ubuntu@13.124.28.246 

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

@     WARNING: UNPROTECTED PRIVATE KEY FILE!     @

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

Permissions 0644 for '/Users/hong/Desktop/sparta_mykey.pem' are too open.

It is required that your private key files are NOT accessible by others.

This private key will be ignored.

Load key "/Users/hong/Desktop/sparta_mykey.pem": bad permissions

ubuntu@13.124.28.246: Permission denied (publickey).

hong@Jinhongui-MacBookPro ~ % sudo chmod 400 /Users/hong/Desktop/sparta_mykey.pem 

Password:오류 발생 시, 작성한 코드 전체와 에러 메시지를 첨부해 주세요.

Tip 1) </> 아이콘을 눌러 코드박스를 만들어 보세요.

Tip 2) Ctrl+A(맥의 경우 Command+A) 단축키로 코드를 한 번에 선택할 수 있어요!