fix help messages & readme

README.md

@@ -110,8 +110,8 @@ Usage of blob-sender:
       --maxpriofee float32     The maximum priority fee per gas in gwei. (default 1.2)
       --nonce uint             Current nonce of the wallet (For offline mode in combination with --output)
   -o, --output                 Output signed transactions to stdout instead of broadcasting them (offline mode).
-  -p, --privkey string         The private key of the wallet to send funds from.
-                               (Special: "env" to read from FUNDINGTOOL_PRIVKEY environment variable)
+  -p, --privkey string         The private key of the wallet to send blobs from.
+                               (Special: "env" to read from BLOBSENDER_PRIVKEY environment variable)
       --random-privkey         Use random private key if no privkey supplied
   -r, --rpchost string         The RPC host to send transactions to. (default "http://127.0.0.1:8545")
   -t, --to string              The transaction to address.

cmd/blob-sender/main.go

@@ -40,7 +40,7 @@ func main() {
 
 	flag.BoolVarP(&cliArgs.verbose, "verbose", "v", false, "Run the script with verbose output")
 	flag.StringVarP(&cliArgs.rpchost, "rpchost", "r", "http://127.0.0.1:8545", "The RPC host to send transactions to.")
-	flag.StringVarP(&cliArgs.privkey, "privkey", "p", "", "The private key of the wallet to send funds from.\n(Special: \"env\" to read from FUNDINGTOOL_PRIVKEY environment variable)")
+	flag.StringVarP(&cliArgs.privkey, "privkey", "p", "", "The private key of the wallet to send blobs from.\n(Special: \"env\" to read from BLOBSENDER_PRIVKEY environment variable)")
 	flag.BoolVar(&cliArgs.randomPrivKey, "random-privkey", false, "Use random private key if no privkey supplied")
 
 	flag.UintVarP(&cliArgs.txCount, "count", "n", 1, "The number of transactions to send.")