## 18 Invoking `pspp-output`

`pspp-output` is a command-line utility accompanying PSPP. It supports multiple operations on SPSS viewer or `.spv` files, here called SPV files. SPSS 16 and later writes SPV files to represent the contents of its output editor.

SPSS 15 and earlier versions instead use `.spo` files. `pspp-output` does not support this format.

`pspp-options` may be invoked in the following ways:

    pspp-output detect file

    pspp-output [options] dir file

    pspp-output [options] convert source destination

    pspp-output --help

    pspp-output --version

Each of these forms is documented separately below. `pspp-output` also has several undocumented command forms that developers may find useful for debugging.