Use of special characters for Oracle passwords in IMP and exp

During data export today, because the user name and password use special characters, an error occurs. Code: "EXP-00056: encounter OracleError 12154 ", the reason for searching online, which needs to be expanded with quotation marks, but the OS is different, and the method is also different:

WindowsOS: EXP username/"" password "@ devdb -- password for three double quotes

Linux/Unix OS: EXP 'username/"password" @ devdb' -- 1 double quotation mark password extension, 1 single quotation mark extension all