There are lots of parameters.
Use electrum --help to get a list.

Here it is:

Code:

$ electrum --help
usage: electrum [-h] [-v] [-P] [-w WALLET_PATH] ...

positional arguments:

gui Run GUI (default)
daemon Run Daemon
addrequest Create a payment request
broadcast Broadcast a transaction to the network
check_seed Check that a seed was generated with given entropy
clearrequests Remove all payment requests
commands List of commands
create Create a new wallet
createmultisig Create multisig address
createrawtx Create a transaction from json inputs
decrypt Decrypt a message encrypted with a public key
deseed Remove seed from wallet
deserialize Deserialize a serialized transaction
dumpprivkeys Deprecated
encrypt Encrypt a message with a public key
freeze Freeze address
getaddressbalance Return the balance of any address
getaddresshistory Return the transaction history of any address
getaddressunspent Returns the UTXO list of any address
getalias Retrieve alias
getbalance Return the balance of your wallet
getconfig Return a configuration variable
getmasterprivate Get master private key
getmerkle Get Merkle branch of a transaction included in a block
getmpk Get master public key
getprivatekeys Get private keys of addresses
getproof Get Merkle branch of an address in the UTXO set
getpubkeys Return the public keys for a wallet address
getrequest Return a payment request
getseed Get seed phrase
getservers Return the list of available servers
gettransaction Retrieve a transaction
getutxoaddress Get the address of a UTXO
help
history Wallet history
importprivkey Import a private key
ismine Check if address is in wallet
listaddresses List wallet addresses
listcontacts Show your list of contacts
listrequests List the payment requests you made
listunspent List unspent outputs
make_seed Create a seed
notify Watch an address
password Change wallet password
payto Create a transaction
paytomany Create a multi-output transaction
restore Restore a wallet from text
rmrequest Remove a payment request
searchcontacts Search through contacts, return matching entries
setconfig Set a configuration variable
setlabel Assign a label to an item
signmessage Sign a message with a key
signrequest Sign payment request with an OpenAlias
signtransaction Sign a transaction
sweep Sweep private keys
unfreeze Unfreeze address
validateaddress Check that an address is valid
verifymessage Verify a signature
version Return the version of electrum

optional arguments:
-h, --help show this help message and exit

global options:
-v, --verbose Show debugging information
-P, --portable Use local 'electrum_data' directory
-w WALLET_PATH, --wallet WALLET_PATH
wallet path

Run 'electrum help ' to see the help for a command