sudo: port command not found--------already update environment

[DeliaLing]

Hello, I am facing below issue after installed Macports from website, I searched from google that it could be environment variable issue, so I added port in PATH as below, please have a look this issue, thanks.

++++++++++++++++++++++++++++++++++++= Last login: Thu Feb 1 15:55:26 on ttys000 linzha02@CRP-MAC-NUAMD6N ~ % sudo port install putty sudo: port: command not found linzha02@CRP-MAC-NUAMD6N ~ % echo $PATH /opt/local/bin:/opt/local/sbin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/Applications/CyberArk EPM.app/Contents/Helpers:/Library/Apple/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Users/linzha02/Library/Android/sdk/emulator:/Users/linzha02/Library/Android/sdk/platform-tools:/Users/linzha02/Library/Android/sdk/tools:/Users/linzha02/Library/Android/sdk/tools/bin:/opt/local/bin/:/opt/local/sbin/ linzha02@CRP-MAC-NUAMD6N ~ % port -v MacPorts 2.9.1 Entering shell mode... ("help" for help, "quit" to quit) [Users/linzha02] >