1 2 3 4 5 6 7 8 9 10 11 12 13
#!/bin/sh # 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