Unrar command

I'm not familiar with shell command in Linux. So I would like your help on a shell command for WinSCP to extract a rar file.

Thank you very much!

one more thing is some files require a password to extract. Please help!

Where can I find a document for this command to referrence ?

Regards,

im searching the same thing
how I can extract (pw protected) rar files with winscp?

doesnt work

You probably need to provide password on command-line.