Print output of cluster bash script to both terminal and file (#1282)

* Change cluster script to print output to files

* Optional print to the logs

scripts/cluster

@@ -27,11 +27,36 @@ function createGenesis() {
 }
 
 function startServerFromBinary() {
-  ./polygon-edge server --data-dir ./test-chain-1 --chain genesis.json --grpc-address :10000 --libp2p :30301 --jsonrpc :10002 --num-block-confirmations 2 --seal --log-level DEBUG &
-  ./polygon-edge server --data-dir ./test-chain-2 --chain genesis.json --grpc-address :20000 --libp2p :30302 --jsonrpc :20002 --num-block-confirmations 2 --seal --log-level DEBUG &
-  ./polygon-edge server --data-dir ./test-chain-3 --chain genesis.json --grpc-address :30000 --libp2p :30303 --jsonrpc :30002 --num-block-confirmations 2 --seal --log-level DEBUG &
-  ./polygon-edge server --data-dir ./test-chain-4 --chain genesis.json --grpc-address :40000 --libp2p :30304 --jsonrpc :40002 --num-block-confirmations 2 --seal --log-level DEBUG &
-  wait
+  if [ "$1" == "write-logs" ]; then
+    echo "Writing validators logs to the files..."
+    ./polygon-edge server --data-dir ./test-chain-1 --chain genesis.json \
+      --grpc-address :10000 --libp2p :30301 --jsonrpc :10002 \
+      --num-block-confirmations 2 --seal --log-level DEBUG 2>&1 | tee ./validator-1.log &
+    ./polygon-edge server --data-dir ./test-chain-2 --chain genesis.json \
+      --grpc-address :20000 --libp2p :30302 --jsonrpc :20002 \
+      --num-block-confirmations 2 --seal --log-level DEBUG 2>&1 | tee ./validator-2.log &
+    ./polygon-edge server --data-dir ./test-chain-3 --chain genesis.json \
+      --grpc-address :30000 --libp2p :30303 --jsonrpc :30002 \
+      --num-block-confirmations 2 --seal --log-level DEBUG 2>&1 | tee ./validator-3.log &
+    ./polygon-edge server --data-dir ./test-chain-4 --chain genesis.json \
+      --grpc-address :40000 --libp2p :30304 --jsonrpc :40002 \
+      --num-block-confirmations 2 --seal --log-level DEBUG 2>&1 | tee ./validator-4.log &
+      wait
+  else
+    ./polygon-edge server --data-dir ./test-chain-1 --chain genesis.json \
+      --grpc-address :10000 --libp2p :30301 --jsonrpc :10002 \
+      --num-block-confirmations 2 --seal --log-level DEBUG &
+    ./polygon-edge server --data-dir ./test-chain-2 --chain genesis.json \
+      --grpc-address :20000 --libp2p :30302 --jsonrpc :20002 \
+      --num-block-confirmations 2 --seal --log-level DEBUG &
+    ./polygon-edge server --data-dir ./test-chain-3 --chain genesis.json \
+      --grpc-address :30000 --libp2p :30303 --jsonrpc :30002 \
+      --num-block-confirmations 2 --seal --log-level DEBUG &
+    ./polygon-edge server --data-dir ./test-chain-4 --chain genesis.json \
+      --grpc-address :40000 --libp2p :30304 --jsonrpc :40002 \
+      --num-block-confirmations 2 --seal --log-level DEBUG &
+      wait
+  fi
 }
 
 function startServerFromDockerCompose() {
@@ -95,14 +120,14 @@ case "$2" in
       initIbftConsensus
       # Create genesis file and start the server from binary
       createGenesis
-      startServerFromBinary
+      startServerFromBinary $2
       exit 0;
     elif [ "$1" == "polybft" ]; then
       # Initialize polybft consensus
       initPolybftConsensus
       # Create genesis file and start the server from binary
       createGenesis
-      startServerFromBinary
+      startServerFromBinary $2
       exit 0;
     else
       echo "Unsupported consensus mode. Supported modes are: ibft and polybft "