validate(feed) - phpMan

jose-jwk-use (1)     - Validates a key for the specified use(s)
cache_check (8)      - validates cache metadata on a device or file.
config.sub (1)       - validate and canonicalize a configuration triplet
CPAN::Meta::Validator (3pm) - validate CPAN distribution metadata structures
Data::OptList (3pm)  - parse and validate simple name/value option pairs
Data::Validate::IP (3pm) - IPv4 and IPv6 validation methods
era_check (8)        - validate era metadata on device or file.
era_invalidate (8)   - Provide a list of blocks that have changed since a par...
fc-validate (1)      - validate font files
git-verify-pack (1)  - Validate packed Git archive files
keyctl_invalidate (3) - invalidate a key
RSA_check_key (3ssl) - validate private RSA keys
RSA_check_key_ex (3ssl) - validate private RSA keys
SCT_LIST_validate (3ssl) - checks Signed Certificate Timestamps (SCTs) are valid
SCT_validate (3ssl)  - checks Signed Certificate Timestamps (SCTs) are valid
thin_check (8)       - validates thin provisioning metadata on a device or file