1 + mkdir t

     2 + cd t

     3 + hg init

     4 + echo a

     5 + hg add a

     6 + hg commit -t test -u test -d '0 0'

     7 + hg verify

     8 checking changesets

     9 checking manifests

    10 crosschecking files in changesets and manifests

    11 checking files

    12 1 files, 1 changesets, 1 total revisions

    13 + hg parents

    14 changeset:   0:acb14030fe0a21b60322c440ad2d20cf7685a376

    15 user:        test

    16 date:        Wed Dec 31 16:00:00 1969

    17 summary:     test

    18 

    19 + hg status

    20 + hg undo

    21 attempting to rollback last transaction

    22 + hg verify

    23 checking changesets

    24 checking manifests

    25 crosschecking files in changesets and manifests

    26 checking files

    27 0 files, 0 changesets, 0 total revisions

    28 + hg parents

    29 + hg status

    30 A a