On the ngspice console window (or into the Windows GUI) you may directly type in any command from 17.5. Within a command sequence Input/output redirection is available (see Chapt. 17.8.8 for an example) - the symbols >, >>, >&, >>&, and < have the same effects as in the C-shell. This I/O-redirection is internal to ngspice commands, and should not be mixed up with the `external' I/O-redirection offered by the usual shells (Linux, MSYS etc.), see 17.5.69. You may type multiple commands on one line, separated by semicolons.