As of r266587M, gpart(8) does not show the 'list' command in the synopsis although it is documented under description "show". I suggest it being added to the synopsis for clarity. Regards,
A commit references this bug: Author: issyl0 Date: Sun Aug 3 21:54:22 UTC 2014 New revision: 269487 URL: http://svnweb.freebsd.org/changeset/base/269487 Log: Add generic list, status, load and unload docs to gpart(8) - In the style of gmirror(8). PR: docs/191534 Reviewed by: gavin Changes: head/sbin/geom/class/part/gpart.8
A fix for `list` and a few other generic missing options is in r269487 and will be merged into at least 10.x soon. Thanks for reporting this!
A commit references this bug: Author: ae Date: Mon Aug 25 12:49:10 UTC 2014 New revision: 270552 URL: http://svnweb.freebsd.org/changeset/base/270552 Log: MFC r268407 (by gjb): Fix non-version text after .Fx macro usage. MFC r269487 (by issyl0): Add generic list, status, load and unload docs to gpart(8) - In the style of gmirror(8). PR: docs/191534 MFC r269852: Add sysctl and loader tunable kern.geom.part.mbr.enforce_chs that is set by default. It can be used to disable automatic alignment to CHS geometry, that GEOM_PART_MBR does. Changes: _U stable/10/ stable/10/sbin/geom/class/part/gpart.8 stable/10/sys/geom/part/g_part_mbr.c
Close PRs that have a corresponding commit to resolve the issue.