LilyPond Application Usage: 2.3 Command line options for convert-ly

## 2.3 Command line options for `convert-ly`

The program is invoked as follows:

>     convert-ly [option]… filename…

The following options can be given:

`-e,--edit`

  Apply the conversions direct to the input file, modifying it in-place.

`-f,--from=from-patchlevel`

  Set the version to convert from. If this is not set, `convert-ly` will guess this, on the basis of `\version` strings in the file. E.g. `--from=2.10.25`

`-n,--no-version`

  Normally, `convert-ly` adds a `\version` indicator to the output. Specifying this option suppresses this.

`-s, --show-rules`

  Show all known conversions and exit.

`--to=to-patchlevel`

  Set the goal version of the conversion. It defaults to the latest available version. E.g. `--to=2.12.2`

`-h, --help`

  Print usage help.

To upgrade LilyPond fragments in texinfo files, use

>     convert-ly --from=... --to=... --no-version *.itely

To see the changes in the LilyPond syntax between two versions, use

>     convert-ly --from=... --to=... -s

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#### LilyPond — Usage