diff --git a/.github/workflows/shellcheck.yml b/.github/workflows/shellcheck.yml
new file mode 100644
index 0000000..e08e5df
--- /dev/null
+++ b/.github/workflows/shellcheck.yml
@@ -0,0 +1,17 @@
+name: Shell Linting
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  shellcheck:
+    name: ShellCheck
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Run ShellCheck
+        run: find . -name "*.sh" -not -path "./.git/*" | xargs shellcheck --severity=error -x
diff --git a/api/env.sh b/api/env.sh
index bbb7296..ec146e4 100644
--- a/api/env.sh
+++ b/api/env.sh
@@ -1 +1,2 @@
+# shellcheck shell=bash
 URL="127.0.0.1:9650"
diff --git a/api/health.health.sh b/api/health.health.sh
index f1c51d2..805ad15 100755
--- a/api/health.health.sh
+++ b/api/health.health.sh
@@ -1,7 +1,10 @@
 #!/bin/bash
 
+# shellcheck source=env.sh
+source env.sh
+
 curl -X POST --data '{
     "jsonrpc":"2.0",
         "id"     :1,
 	    "method" :"health.health"
-    }' -H 'content-type:application/json;' 127.0.0.1:9650/ext/health
+    }' -H 'content-type:application/json;' "${URL}/ext/health"
diff --git a/api/info.getNetworkID.sh b/api/info.getNetworkID.sh
index bfcdb81..e6e636c 100755
--- a/api/info.getNetworkID.sh
+++ b/api/info.getNetworkID.sh
@@ -1,9 +1,10 @@
 #!/bin/bash
 
+# shellcheck source=env.sh
 source env.sh
 
 curl -X POST --data '{
     "jsonrpc":"2.0",
     "id"     :1,
     "method" :"info.getNetworkID"
-}' -H 'content-type:application/json;' ${URL}/ext/info
+}' -H 'content-type:application/json;' "${URL}/ext/info"
diff --git a/api/info.getNetworkName.sh b/api/info.getNetworkName.sh
index 4a3b144..ffc6da5 100755
--- a/api/info.getNetworkName.sh
+++ b/api/info.getNetworkName.sh
@@ -1,9 +1,10 @@
 #!/bin/bash
 
+# shellcheck source=env.sh
 source env.sh
 
 curl -X POST --data '{
     "jsonrpc":"2.0",
     "id"     :1,
     "method" :"info.getNetworkName"
-}' -H 'content-type:application/json;' ${URL}/ext/info
+}' -H 'content-type:application/json;' "${URL}/ext/info"
diff --git a/api/info.getNodeID.sh b/api/info.getNodeID.sh
index e3c6c95..3907db4 100755
--- a/api/info.getNodeID.sh
+++ b/api/info.getNodeID.sh
@@ -5,10 +5,11 @@
 # Expected Output
 # {"jsonrpc":"2.0","result":{"nodeID":"NodeID-JRhJd4Qn4WTjP28RUFDQa2NC59deo7tT6"},"id":1}
 
-URL="127.0.0.1:9650"
+# shellcheck source=env.sh
+source env.sh
 
 curl -X POST --data '{
     "jsonrpc":"2.0",
     "id"     :1,
     "method" :"info.getNodeID"
-}' -H 'content-type:application/json;' ${URL}/ext/info
+}' -H 'content-type:application/json;' "${URL}/ext/info"
diff --git a/api/info.getVMs.sh b/api/info.getVMs.sh
index af97938..38c2903 100755
--- a/api/info.getVMs.sh
+++ b/api/info.getVMs.sh
@@ -1,5 +1,6 @@
 #!/bin/bash
 
+# shellcheck source=env.sh
 source env.sh
 
 curl -X POST --data '{
@@ -7,4 +8,4 @@ curl -X POST --data '{
     "id"     :1,
     "method" :"info.getVMs",
     "params" :{}
-}' -H 'content-type:application/json;' ${URL}/ext/info
+}' -H 'content-type:application/json;' "${URL}/ext/info"
diff --git a/api/info.isBootstrapped.sh b/api/info.isBootstrapped.sh
index 2940dfd..4d4dac6 100755
--- a/api/info.isBootstrapped.sh
+++ b/api/info.isBootstrapped.sh
@@ -3,7 +3,8 @@
 # Note: The bootstrapping process takes approximately 50–100 hours and requires 100 GB of space.
 # https://chainstack.com/avalanche-subnet-tutorial-series-running-a-local-avalanche-node-on-fuji-testnet/
 
-URL="127.0.0.1:9650"
+# shellcheck source=env.sh
+source env.sh
 CHAIN_ID="$1"
 
 curl -X POST --data "{ 
@@ -13,4 +14,4 @@ curl -X POST --data "{
         \"chain\":\"${CHAIN_ID}\" 
     }, 
     \"id\": 1 
-}" -H 'content-type:application/json;' ${URL}/ext/info 
+}" -H 'content-type:application/json;' "${URL}/ext/info"
diff --git a/api/info.peers.sh b/api/info.peers.sh
index 7fa32b2..63cb17d 100755
--- a/api/info.peers.sh
+++ b/api/info.peers.sh
@@ -1,32 +1,27 @@
 #!/bin/bash
 
+# shellcheck source=peers.conf
+source peers.conf
+
 # Snow
 echo "========== Snow nodes information =========="
-curl -X POST --data '{
-    "jsonrpc":"2.0",
-    "id"     :1,
-    "method" :"info.peers",
-    "params": {
-        "nodeIDs": [
-            "NodeID-7TwAjiRpTbNcqUx6F9EoyXRBLAfeoQXRq",
-            "NodeID-JbeonHKqomERomXgCiXr9oC9vfynkBupj",
-            "NodeID-BffXkmzM8EwrBZgpqFp9pwgE9DbDgYKG2",
-            "NodeID-24WK7qiKXAumya1kKEktwj2ubBbRyq5UW",
-            "NodeID-A2Z8m7egVLhKf1Qj14uvXadhExM5zrB7p"
-        ]
+curl -X POST --data "{
+    \"jsonrpc\":\"2.0\",
+    \"id\":1,
+    \"method\":\"info.peers\",
+    \"params\": {
+        \"nodeIDs\": ${SNOW_NODE_IDS}
     }
-}' -H 'content-type:application/json;' https://api.avax-test.network/ext/info | jq .
+}" -H 'content-type:application/json;' https://api.avax-test.network/ext/info | jq .
 
 # Jade
 echo "========== Jade nodes information =========="
-curl -X POST --data '{
-    "jsonrpc":"2.0",
-    "id"     :1,
-    "method" :"info.peers",
-    "params": {
-        "nodeIDs": [
-            "NodeID-BXTBUqX8gitUDtVam4fhRWGD1SfeHGoBx"
-        ]
+curl -X POST --data "{
+    \"jsonrpc\":\"2.0\",
+    \"id\":1,
+    \"method\":\"info.peers\",
+    \"params\": {
+        \"nodeIDs\": ${JADE_NODE_IDS}
     }
-}' -H 'content-type:application/json;' https://api.avax.network/ext/info | jq .
+}" -H 'content-type:application/json;' https://api.avax.network/ext/info | jq .
 
diff --git a/api/metrics.sh b/api/metrics.sh
index a527772..00c87a4 100755
--- a/api/metrics.sh
+++ b/api/metrics.sh
@@ -1,3 +1,6 @@
 #!/bin/bash
 
-curl -X POST 127.0.0.1:9650/ext/metrics
+# shellcheck source=env.sh
+source env.sh
+
+curl -X POST "${URL}/ext/metrics"
diff --git a/api/peers.conf b/api/peers.conf
new file mode 100644
index 0000000..3182b29
--- /dev/null
+++ b/api/peers.conf
@@ -0,0 +1,6 @@
+# shellcheck shell=bash
+# Snow (testnet) node IDs
+SNOW_NODE_IDS='["NodeID-7TwAjiRpTbNcqUx6F9EoyXRBLAfeoQXRq","NodeID-JbeonHKqomERomXgCiXr9oC9vfynkBupj","NodeID-BffXkmzM8EwrBZgpqFp9pwgE9DbDgYKG2","NodeID-24WK7qiKXAumya1kKEktwj2ubBbRyq5UW","NodeID-A2Z8m7egVLhKf1Qj14uvXadhExM5zrB7p"]'
+
+# Jade (mainnet) node IDs
+JADE_NODE_IDS='["NodeID-BXTBUqX8gitUDtVam4fhRWGD1SfeHGoBx"]'
diff --git a/api/platform.getBlockchainStatus.sh b/api/platform.getBlockchainStatus.sh
index e6b1c25..47ca617 100755
--- a/api/platform.getBlockchainStatus.sh
+++ b/api/platform.getBlockchainStatus.sh
@@ -7,7 +7,8 @@
 #   "vmID": "kmYb53NrmqcW7gfV2FGHBHWXNA6YhhWf7R7LoQeGj9mdDYuaT"
 # }
 
-URL="127.0.0.1:9650"
+# shellcheck source=env.sh
+source env.sh
 BLOCKCHAIN_ID="$1"
 
 curl -X POST --data "{
@@ -17,4 +18,4 @@ curl -X POST --data "{
         \"blockchainID\":\"${BLOCKCHAIN_ID}\"
     },
     \"id\": 1
-}" -H 'content-type:application/json;' ${URL}/ext/P
+}" -H 'content-type:application/json;' "${URL}/ext/P"
diff --git a/api/platform.getBlockchains.sh b/api/platform.getBlockchains.sh
index 66ef57b..c3b556d 100755
--- a/api/platform.getBlockchains.sh
+++ b/api/platform.getBlockchains.sh
@@ -1,5 +1,6 @@
 #!/bin/bash
 
+# shellcheck source=env.sh
 source env.sh
 
 curl -X POST --data '{
@@ -7,4 +8,4 @@ curl -X POST --data '{
     "id" :1,
     "method" :"platform.getBlockchains",
     "params" :{}
-}' -H 'content-type:application/json;' ${URL}/ext/P
+}' -H 'content-type:application/json;' "${URL}/ext/P"
diff --git a/api/platform.getCurrentValidators.sh b/api/platform.getCurrentValidators.sh
index 0e0f743..12d3f24 100755
--- a/api/platform.getCurrentValidators.sh
+++ b/api/platform.getCurrentValidators.sh
@@ -3,7 +3,8 @@
 # Note: The bootstrapping process takes approximately 50–100 hours and requires 100 GB of space.
 # https://chainstack.com/avalanche-subnet-tutorial-series-running-a-local-avalanche-node-on-fuji-testnet/
 
-URL="127.0.0.1:9650"
+# shellcheck source=env.sh
+source env.sh
 SUBNET_ID="$1"
 curl -X POST --data "{
     \"jsonrpc\": \"2.0\",
@@ -12,4 +13,4 @@ curl -X POST --data "{
         \"subnetID\": \"${SUBNET_ID}\"
     },
     \"id\": 1
-}" -H 'content-type:application/json;' ${URL}/ext/bc/P
+}" -H 'content-type:application/json;' "${URL}/ext/bc/P"
diff --git a/api/platform.getPendingValidators.sh b/api/platform.getPendingValidators.sh
index 8c9402d..11f047a 100755
--- a/api/platform.getPendingValidators.sh
+++ b/api/platform.getPendingValidators.sh
@@ -3,7 +3,8 @@
 # Note: The bootstrapping process takes approximately 50–100 hours and requires 100 GB of space.
 # https://chainstack.com/avalanche-subnet-tutorial-series-running-a-local-avalanche-node-on-fuji-testnet/
 
-URL="127.0.0.1:9650"
+# shellcheck source=env.sh
+source env.sh
 
 echo "URL: ${URL}"
 
@@ -12,4 +13,4 @@ curl -X POST --data '{
         "method": "platform.getPendingValidators",
 	    "params": {},
 	        "id": 1
-	}' -H 'content-type:application/json;' ${URL}/ext/bc/P
+	}' -H 'content-type:application/json;' "${URL}/ext/bc/P"
diff --git a/api/platform.getSubnets.sh b/api/platform.getSubnets.sh
index 3fde414..2d3b670 100755
--- a/api/platform.getSubnets.sh
+++ b/api/platform.getSubnets.sh
@@ -3,7 +3,8 @@
 # Note: The bootstrapping process takes approximately 50–100 hours and requires 100 GB of space.
 # https://chainstack.com/avalanche-subnet-tutorial-series-running-a-local-avalanche-node-on-fuji-testnet/
 
-URL="127.0.0.1:9650"
+# shellcheck source=env.sh
+source env.sh
 
 echo "URL: ${URL}"
 
@@ -12,4 +13,4 @@ curl -X POST --data '{
         "method": "platform.getSubnets",
 	    "params": {},
 	        "id": 1
-	}' -H 'content-type:application/json;' ${URL}/ext/bc/P
+	}' -H 'content-type:application/json;' "${URL}/ext/bc/P"
diff --git a/api/platform.getValidatorsAt.sh b/api/platform.getValidatorsAt.sh
index 66ee968..7e2f039 100755
--- a/api/platform.getValidatorsAt.sh
+++ b/api/platform.getValidatorsAt.sh
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+# shellcheck source=env.sh
+source env.sh
 SUBNET_ID="$1"
 
 curl -X POST --data "{
@@ -10,4 +12,4 @@ curl -X POST --data "{
 	\"subnetID\": \"${SUBNET_ID}\"
     },
     \"id\": 1
-}" -H 'content-type:application/json;' 127.0.0.1:9650/ext/bc/P
+}" -H 'content-type:application/json;' "${URL}/ext/bc/P"
diff --git a/api/platform.validatedBy.sh b/api/platform.validatedBy.sh
index 236114c..678d2ae 100755
--- a/api/platform.validatedBy.sh
+++ b/api/platform.validatedBy.sh
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+# shellcheck source=env.sh
+source env.sh
 BLOCKCHAIN_ID="$1"
 
 curl -X POST --data "{
@@ -9,4 +11,4 @@ curl -X POST --data "{
         \"blockchainID\": \"${BLOCKCHAIN_ID}\"
     },
     \"id\": 1
-}" -H 'content-type:application/json;' 127.0.0.1:9650/ext/bc/P
+}" -H 'content-type:application/json;' "${URL}/ext/bc/P"
diff --git a/api/platform.validates.sh b/api/platform.validates.sh
index a41d4a7..176edcf 100755
--- a/api/platform.validates.sh
+++ b/api/platform.validates.sh
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+# shellcheck source=env.sh
+source env.sh
 SUBNET_ID="$1"
 
 curl -X POST --data "{
@@ -9,5 +11,5 @@ curl -X POST --data "{
         \"subnetID\":\"${SUBNET_ID}\"
     },
     \"id\": 1
-}" -H 'content-type:application/json;' 127.0.0.1:9650/ext/bc/P
+}" -H 'content-type:application/json;' "${URL}/ext/bc/P"
 
diff --git a/chains/install-subnet-cli.sh b/chains/install-subnet-cli.sh
deleted file mode 100755
index 9b01c83..0000000
--- a/chains/install-subnet-cli.sh
+++ /dev/null
@@ -1,24 +0,0 @@
-VERSION=0.0.2 # Populate latest here
-
-GOARCH=$(go env GOARCH)
-GOOS=$(go env GOOS)
-DOWNLOAD_PATH=/tmp/subnet-cli.tar.gz
-DOWNLOAD_URL=https://github.com/ava-labs/subnet-cli/releases/download/v${VERSION}/subnet-cli_${VERSION}_linux_${GOARCH}.tar.gz
-if [[ ${GOOS} == "darwin" ]]; then
-  DOWNLOAD_URL=https://github.com/ava-labs/subnet-cli/releases/download/v${VERSION}/subnet-cli_${VERSION}_darwin_${GOARCH}.tar.gz
-fi
-
-rm -f ${DOWNLOAD_PATH}
-rm -f /tmp/subnet-cli
-
-echo "downloading subnet-cli ${VERSION} at ${DOWNLOAD_URL}"
-curl -L ${DOWNLOAD_URL} -o ${DOWNLOAD_PATH}
-
-echo "extracting downloaded subnet-cli"
-tar xzvf ${DOWNLOAD_PATH} -C /tmp
-
-/tmp/subnet-cli -h
-
-# OR
-# mv /tmp/subnet-cli /usr/bin/subnet-cli
-# subnet-cli -h
diff --git a/chains/update-validator-mainnet.sh b/chains/update-validator-mainnet.sh
index f740697..b14b67e 100755
--- a/chains/update-validator-mainnet.sh
+++ b/chains/update-validator-mainnet.sh
@@ -1,68 +1,5 @@
 #!/bin/bash
 
-AVALANCHEGO_PREVIOUS_VERSION="1.10.7"
-AVALANCHEGO_VERSION="1.10.11"
-SUBNET_EVM_VERSION="0.5.6"
-# Numbers Mainnet
-VM_ID="qeX7kcVMMkVLB9ZJKTpvtSjpLbtYooNEdpFzFShwRTFu76qdx"
-SUBNET_ID="2gHgAgyDHQv7jzFg6MxU2yyKq5NZBpwFLFeP8xX2E3gyK1SzSQ"
-
-
-download_avalanchego() {
-    echo "Step: download_avalanchego"
-    wget https://github.com/ava-labs/avalanchego/releases/download/v${AVALANCHEGO_VERSION}/avalanchego-linux-amd64-v${AVALANCHEGO_VERSION}.tar.gz
-    tar xzf avalanchego-linux-amd64-v${AVALANCHEGO_VERSION}.tar.gz
-    cp avalanchego-v${AVALANCHEGO_PREVIOUS_VERSION}/run.sh avalanchego-v${AVALANCHEGO_VERSION}/
-}
-
-download_sunbet_evm() {
-    echo "Step: download_sunbet_evm"
-    mkdir subnet-evm-${SUBNET_EVM_VERSION}
-    wget https://github.com/ava-labs/subnet-evm/releases/download/v${SUBNET_EVM_VERSION}/subnet-evm_${SUBNET_EVM_VERSION}_linux_amd64.tar.gz
-    tar xzf subnet-evm_${SUBNET_EVM_VERSION}_linux_amd64.tar.gz -C subnet-evm-${SUBNET_EVM_VERSION}
-}
-
-update_subnet_evm() {
-    echo "Step: update_subnet_evm"
-    cp subnet-evm-${SUBNET_EVM_VERSION}/subnet-evm ~/.avalanchego/plugins/${VM_ID}
-    sha256sum subnet-evm-${SUBNET_EVM_VERSION}/subnet-evm ~/.avalanchego/plugins/${VM_ID}
-}
-
-show_validator_files() {
-    echo "Step: show_validator_files"
-    tree avalanchego-v${AVALANCHEGO_VERSION}
-    tree ~/.avalanchego/plugins/
-}
-
-show_configs() {
-    echo "Step: show_configs"
-    echo "AVALANCHEGO_PREVIOUS_VERSION: ${AVALANCHEGO_PREVIOUS_VERSION}"
-    echo "AVALANCHEGO_VERSION: ${AVALANCHEGO_VERSION}"
-    echo "SUBNET_EVM_VERSION: ${SUBNET_EVM_VERSION}"
-    echo "VM_ID (Mainnet): ${VM_ID}"
-    echo "SUBNET_ID (Mainnet): ${SUBNET_ID}"
-}
-
-show_next_action_reminder() {
-    echo "Step: show_next_action_reminder"
-    echo "Now, you are ready to start the validator"
-    echo "$ cd ~/avalanchego-v${AVALANCHEGO_VERSION}"
-    echo "$ ./run.sh"
-    echo ""
-    echo "Check validators"
-    echo "$ cd ~/avalanchego-api-scripts/api"
-    echo "$ ./platform.getCurrentValidators.sh ${SUBNET_ID} | jq ."
-    echo "$ ./info.peers.sh  | jq ."
-}
-
-main() {
-    show_configs
-    download_avalanchego
-    download_sunbet_evm
-    update_subnet_evm
-    show_validator_files
-    show_next_action_reminder
-}
-
-main
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+exec "${SCRIPT_DIR}/update-validator.sh" --network mainnet "$@"
 
diff --git a/chains/update-validator-testnet.sh b/chains/update-validator-testnet.sh
index 6f2c22d..5615ff3 100755
--- a/chains/update-validator-testnet.sh
+++ b/chains/update-validator-testnet.sh
@@ -1,68 +1,5 @@
 #!/bin/bash
 
-AVALANCHEGO_PREVIOUS_VERSION="1.10.7"
-AVALANCHEGO_VERSION="1.10.11"
-SUBNET_EVM_VERSION="0.5.6"
-# Numbers Testnet
-VM_ID="kmYb53NrmqcW7gfV2FGHBHWXNA6YhhWf7R7LoQeGj9mdDYuaT"
-SUBNET_ID="81vK49Udih5qmEzU7opx3Zg9AnB33F2oqUTQKuaoWgCvFUWQe"
-
-
-download_avalanchego() {
-    echo "Step: download_avalanchego"
-    wget https://github.com/ava-labs/avalanchego/releases/download/v${AVALANCHEGO_VERSION}/avalanchego-linux-amd64-v${AVALANCHEGO_VERSION}.tar.gz
-    tar xzf avalanchego-linux-amd64-v${AVALANCHEGO_VERSION}.tar.gz
-    cp avalanchego-v${AVALANCHEGO_PREVIOUS_VERSION}/run.sh avalanchego-v${AVALANCHEGO_VERSION}/
-}
-
-download_sunbet_evm() {
-    echo "Step: download_sunbet_evm"
-    mkdir subnet-evm-${SUBNET_EVM_VERSION}
-    wget https://github.com/ava-labs/subnet-evm/releases/download/v${SUBNET_EVM_VERSION}/subnet-evm_${SUBNET_EVM_VERSION}_linux_amd64.tar.gz
-    tar xzf subnet-evm_${SUBNET_EVM_VERSION}_linux_amd64.tar.gz -C subnet-evm-${SUBNET_EVM_VERSION}
-}
-
-update_subnet_evm() {
-    echo "Step: update_subnet_evm"
-    cp subnet-evm-${SUBNET_EVM_VERSION}/subnet-evm ~/.avalanchego/plugins/${VM_ID}
-    sha256sum subnet-evm-${SUBNET_EVM_VERSION}/subnet-evm ~/.avalanchego/plugins/${VM_ID}
-}
-
-show_validator_files() {
-    echo "Step: show_validator_files"
-    tree avalanchego-v${AVALANCHEGO_VERSION}
-    tree ~/.avalanchego/plugins/
-}
-
-show_configs() {
-    echo "Step: show_configs"
-    echo "AVALANCHEGO_PREVIOUS_VERSION: ${AVALANCHEGO_PREVIOUS_VERSION}"
-    echo "AVALANCHEGO_VERSION: ${AVALANCHEGO_VERSION}"
-    echo "SUBNET_EVM_VERSION: ${SUBNET_EVM_VERSION}"
-    echo "VM_ID (Testnet): ${VM_ID}"
-    echo "SUBNET_ID (Testnet): ${SUBNET_ID}"
-}
-
-show_next_action_reminder() {
-    echo "Step: show_next_action_reminder"
-    echo "Now, you are ready to start the validator"
-    echo "$ cd ~/avalanchego-v${AVALANCHEGO_VERSION}"
-    echo "$ ./run.sh"
-    echo ""
-    echo "Check validators"
-    echo "$ cd ~/avalanchego-api-scripts/api"
-    echo "$ ./platform.getCurrentValidators.sh ${SUBNET_ID} | jq ."
-    echo "$ ./info.peers.sh  | jq ."
-}
-
-main() {
-    show_configs
-    download_avalanchego
-    download_sunbet_evm
-    update_subnet_evm
-    show_validator_files
-    show_next_action_reminder
-}
-
-main
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+exec "${SCRIPT_DIR}/update-validator.sh" --network testnet "$@"
 
diff --git a/chains/update-validator.sh b/chains/update-validator.sh
new file mode 100644
index 0000000..9be930d
--- /dev/null
+++ b/chains/update-validator.sh
@@ -0,0 +1,92 @@
+#!/bin/bash
+set -euo pipefail
+
+AVALANCHEGO_PREVIOUS_VERSION="1.10.7"
+AVALANCHEGO_VERSION="1.10.11"
+SUBNET_EVM_VERSION="0.5.6"
+
+# Parse --network argument
+NETWORK=""
+while [[ $# -gt 0 ]]; do
+    case "$1" in
+        --network)
+            NETWORK="$2"
+            shift 2
+            ;;
+        *)
+            echo "Unknown argument: $1"
+            exit 1
+            ;;
+    esac
+done
+
+if [[ "${NETWORK}" == "mainnet" ]]; then
+    VM_ID="qeX7kcVMMkVLB9ZJKTpvtSjpLbtYooNEdpFzFShwRTFu76qdx"
+    SUBNET_ID="2gHgAgyDHQv7jzFg6MxU2yyKq5NZBpwFLFeP8xX2E3gyK1SzSQ"
+elif [[ "${NETWORK}" == "testnet" ]]; then
+    VM_ID="kmYb53NrmqcW7gfV2FGHBHWXNA6YhhWf7R7LoQeGj9mdDYuaT"
+    SUBNET_ID="81vK49Udih5qmEzU7opx3Zg9AnB33F2oqUTQKuaoWgCvFUWQe"
+else
+    echo "Usage: $0 --network mainnet|testnet"
+    exit 1
+fi
+
+
+download_avalanchego() {
+    echo "Step: download_avalanchego"
+    wget "https://github.com/ava-labs/avalanchego/releases/download/v${AVALANCHEGO_VERSION}/avalanchego-linux-amd64-v${AVALANCHEGO_VERSION}.tar.gz"
+    tar xzf "avalanchego-linux-amd64-v${AVALANCHEGO_VERSION}.tar.gz"
+    cp "avalanchego-v${AVALANCHEGO_PREVIOUS_VERSION}/run.sh" "avalanchego-v${AVALANCHEGO_VERSION}/"
+}
+
+download_subnet_evm() {
+    echo "Step: download_subnet_evm"
+    mkdir "subnet-evm-${SUBNET_EVM_VERSION}"
+    wget "https://github.com/ava-labs/subnet-evm/releases/download/v${SUBNET_EVM_VERSION}/subnet-evm_${SUBNET_EVM_VERSION}_linux_amd64.tar.gz"
+    tar xzf "subnet-evm_${SUBNET_EVM_VERSION}_linux_amd64.tar.gz" -C "subnet-evm-${SUBNET_EVM_VERSION}"
+}
+
+update_subnet_evm() {
+    echo "Step: update_subnet_evm"
+    cp "subnet-evm-${SUBNET_EVM_VERSION}/subnet-evm" "${HOME}/.avalanchego/plugins/${VM_ID}"
+    sha256sum "subnet-evm-${SUBNET_EVM_VERSION}/subnet-evm" "${HOME}/.avalanchego/plugins/${VM_ID}"
+}
+
+show_validator_files() {
+    echo "Step: show_validator_files"
+    tree "avalanchego-v${AVALANCHEGO_VERSION}"
+    tree "${HOME}/.avalanchego/plugins/"
+}
+
+show_configs() {
+    echo "Step: show_configs"
+    echo "AVALANCHEGO_PREVIOUS_VERSION: ${AVALANCHEGO_PREVIOUS_VERSION}"
+    echo "AVALANCHEGO_VERSION: ${AVALANCHEGO_VERSION}"
+    echo "SUBNET_EVM_VERSION: ${SUBNET_EVM_VERSION}"
+    echo "NETWORK: ${NETWORK}"
+    echo "VM_ID: ${VM_ID}"
+    echo "SUBNET_ID: ${SUBNET_ID}"
+}
+
+show_next_action_reminder() {
+    echo "Step: show_next_action_reminder"
+    echo "Now, you are ready to start the validator"
+    echo "$ cd ~/avalanchego-v${AVALANCHEGO_VERSION}"
+    echo "$ ./run.sh"
+    echo ""
+    echo "Check validators"
+    echo "$ cd ~/avalanchego-api-scripts/api"
+    echo "$ ./platform.getCurrentValidators.sh ${SUBNET_ID} | jq ."
+    echo "$ ./info.peers.sh  | jq ."
+}
+
+main() {
+    show_configs
+    download_avalanchego
+    download_subnet_evm
+    update_subnet_evm
+    show_validator_files
+    show_next_action_reminder
+}
+
+main
diff --git a/subnet-cli/install-subnet-cli.sh b/subnet-cli/install-subnet-cli.sh
index 9b01c83..47537ae 100755
--- a/subnet-cli/install-subnet-cli.sh
+++ b/subnet-cli/install-subnet-cli.sh
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 VERSION=0.0.2 # Populate latest here
 
 GOARCH=$(go env GOARCH)