Use Bitcoin RPC to send from many addresses to single address I am looking into being able to send coins from specific addresses to a single output address using bitcoin-cli

Is this possible? What RPC command would I use? Any chance of an example?
Yes that possible:

you need to know the txid and Vout index for those particular addresses when they were funded

for example here i have used 3 addressees to send some BTC  to single addresses 2N6V6Ko17CPWaZZf6YrGKeq8R1fzbqrTKLF and if  know the txid and vout of those addresses when they were funded i will do:

1)create raw tranaction

syntax: createrawtransaction   [{"txid":txid,"vout":n},...] {address:amount,...} 

 bitcoin-cli -regtest createrawtransaction '[{"txid":"582283c5f2293a2cdb27173c3118ff59863d9ff2be5c3b48fa8e66509e9a7d0d","vout":1},{"txid":"3126fc2864fbf780460734dd1512b98e86f72f8e5b8b59047beae9dd859ac33a","vout":0},{"txid":"94a6701b68e38b3f980c9bf2b0e905dd7e479c7ed01590eeee20b1753c29d6af","vout":1}]' '{"2N6V6Ko17CPWaZZf6YrGKeq8R1fzbqrTKLF":"2"}'


2) Sign raw transaction:

syntax: signrawtransaction  &lt;hexstring&gt; [] [&lt;privatekey1&gt;,...] 

bitcoin-cli -regtest  Signrawtransaction hexstring_from_createRawtransaction '[]'["pvtkey_add1","pvtkey_add2","pvtkey_add3"]


3) send raw transaction

syntax: sendrawtransaction hexString

bitcoin-cli -regtest hexString_from_signrawTransction