parmwrite
Write selected topology to file.
parmwrite out <filename> [{parm <name> | parmindex <#> | <#> | crdset <setname>}] [<fmt>] [nochamber]
<filename>
File to write to.
[parm <name> | parmindex <#> | <#>]
Topology to write out.
[crdset <setname>]
Write topology from specified COORDS data set.
[<fmt>]
Format keyword. If not specified the file name extension will be used. Default is Amber Topology.
[nochamber]
(Amber topology only) Remove any CHAMBER information from the topology.
Write out specified topology (first topology loaded by default) to <filename> with format <fmt> (Amber topology if not specified). Note that the Amber topology format is the only fully supported format for topology writes.