updates or adds an extended attribute to a variable. If the variable and extended
attribute combination does not exist, the extended attribute will be added. If it does
exist, the extended attribute will be updated with the one specified.
Details
Use the XATTR SET statement if you are not sure if an extended attribute exists. If an
extended attribute does exist, it will be updated. If the extended attribute does not exist,
it added. The XATTR SET ...
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