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Help: verify

find changesets by author, revision, files, or words in the commit message
hg verify

verify the integrity of the repository

    Verify the integrity of the current repository.

    This will perform an extensive check of the repository's integrity,
    validating the hashes and checksums of each entry in the changelog,
    manifest, and tracked files, as well as the integrity of their crosslinks
    and indices.

    Returns 0 on success, 1 if errors are encountered.

use "hg -v help verify" to show more info