If I've ever used the interactive mode of PSPP, I cannot recall. I think it's broken (at least in windows). It reads the first character of each command as a 'p':
G:\projects\pspp>"C:\Program Files (x86)\PSPP\bin\pspp.exe" PSPP is free software and you are welcome to distribute copies of it under certain conditions; type "show copying." to see the conditions. There is ABSOLUTELY NO WARRANTY for PSPP; type "show warranty." for details. GNU pspp 1.4.0-gc3c044 PSPP> exit pxit error: Unknown command `pxit'. PSPP> PSPP> exit pxit error: Unknown command `pxit'. PSPP> ^C G:\projects\pspp>"C:\Program Files (x86)\PSPP\bin\pspp.exe" PSPP is free software and you are welcome to distribute copies of it under certain conditions; type "show copying." to see the conditions. There is ABSOLUTELY NO WARRANTY for PSPP; type "show warranty." for details. GNU pspp 1.4.0-gc3c044 PSPP> show license phow license error: Unknown command `phow'. PSPP> PSPP> show license pshow license error: Unknown command `pshow'. PSPP> PSPP> -- Alan D. Mead, Ph.D. President, Talent Algorithms Inc. science + technology = better workers https://talalg.com Ginsberg's Theorem: 0. There is a game. 1. You can't win. 2. You can't break even. 3. You can't even get out of the game.