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# Fetch an RFC from the IETF site and write it to stdout
# Check arguments
if [ "$#" -ne 1 ] ; then
printf >&2 'rfcf: Need one RFC number\n'
exit 2
fi
# Argument is RFC number
rn=$1
# Retrieve the RFC with curl(1)
curl -fsSL https://tools.ietf.org/rfc/rfc"$rn".txt
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