# rexec > Execute a command on a remote host. > Note: Use `rexec` with caution, as it transmits data in plain text. Consider secure alternatives like SSH for encrypted communication. > More information: . - Execute a command on a remote host: `rexec {{[-h|--host]}} {{remote_host}} {{ls -l}}` - Specify the remote username on a remote host: `rexec {{[-u|--username]}} {{username}} {{[-h|--host]}} {{remote_host}} {{ps aux}}` - Redirect `stdin` from `/dev/null` on a remote host: `rexec {{[-n|--noerr]}} {{[-h|--host]}} {{remote_host}} {{ls -l}}` - Specify the remote port on a remote host: `rexec {{[-P|--port]}} {{1234}} {{[-h|--host]}} {{remote_host}} {{ls -l}}`