Documentation for Open Vulnerability and Assessment Language (OVAL®)
Definition Type: Element
Name: epoch
Namespace: http://oval.mitre.org/XMLSchema/system_characteristics#redhat
Type: system_characteristics:dataStringType
Containing Schema: redhat-system-characteristics-schema.xsd
MinOccurs 1
MaxOccurs 1
Abstract
Documentation:
This is the epoch number of the RPM, this is used as a kludge for version-release comparisons where the vendor has done some kind of re-numbering or version forking. This number is not revealed by a normal query of the RPM's information -- you must use a formatted rpm query command to gather this data from the command line, like so. For an already-installed RPM: rpm -q --qf '%{EPOCH}\n' installed_rpm For an RPM file that has not been installed: rpm -qp --qf '%{EPOCH}\n' rpm_file
Collapse XSD Schema Diagram:
Drilldown into status in schema system-characteristics-schema_xsd Drilldown into datatype in schema system-characteristics-schema_xsd Drilldown into dataAttributes in schema system-characteristics-schema_xsd Drilldown into dataStringType in schema system-characteristics-schema_xsdXSD Diagram of epoch in schema redhat-system-characteristics-schema_xsd (Open Vulnerability and Assessment Language (OVAL®))
Collapse XSD Schema Code: 
<xsd:element name="epoch" type="system_characteristics:dataStringType" minOccurs="1" maxOccurs="1">
    <xsd:annotation>
        <xsd:documentation>This is the epoch number of the RPM, this is used as a kludge for version-release comparisons where the vendor has done some kind of re-numbering or version forking.  This number is not revealed by a normal query of the RPM's information -- you  must use a formatted rpm query command to gather this data from the command  line, like so.  For an already-installed RPM:  rpm -q --qf '%{EPOCH}\n' installed_rpm  For an RPM file that has not been installed:  rpm -qp --qf '%{EPOCH}\n' rpm_file</xsd:documentation>
        <xsd:appinfo>
            <parent_item>RPM Info Item</parent_item>
            <cardinality>1</cardinality>
            <content>string</content>
            <valid_datatypes>string</valid_datatypes>
        </xsd:appinfo>
    </xsd:annotation>
</xsd:element>
Collapse Child Attributes:
Name Type Default Value Use
datatype system_characteristics:datatype string Optional
status system_characteristics:status exists Optional
Collapse Derivation Tree:
Documentation for Open Vulnerability and Assessment Language (OVAL®)

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