leslie-tsang commented on a change in pull request #5209:
URL: https://github.com/apache/apisix/pull/5209#discussion_r727225460



##########
File path: utils/install-dependencies.sh
##########
@@ -0,0 +1,104 @@
+#!/usr/bin/env bash
+
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# Install dependencies on centos and fedora
+function install_dependencies_on_centos_and_fedora() {
+    # add OpenResty source
+    sudo yum install yum-utils
+    sudo yum-config-manager --add-repo 
https://openresty.org/package/${DISTRO}/openresty.repo
+
+    # install OpenResty and some compilation tools
+    sudo yum install -y openresty curl git gcc openresty-openssl111-devel 
unzip pcre pcre-devel
+}
+
+# Install dependencies on ubuntu and debian
+function install_dependencies_on_ubuntu_and_debian() {
+    # add OpenResty source
+    sudo apt-get update
+    sudo apt-get -y install software-properties-common wget
+    wget -qO - https://openresty.org/package/pubkey.gpg | sudo apt-key add -
+    if [[ $DISTRO == "ubuntu" ]]; then
+        sudo add-apt-repository -y "deb http://openresty.org/package/ubuntu 
$(lsb_release -sc) main"
+    elif [[ $DISTRO == "debian" ]]; then
+        sudo add-apt-repository -y "deb http://openresty.org/package/debian 
$(lsb_release -sc) openresty"
+    fi
+    sudo apt-get update
+
+    # install OpenResty and some compilation tools
+    sudo apt-get install -y git openresty curl openresty-openssl111-dev make 
gcc libpcre3 libpcre3-dev
+}
+
+# Install dependencies on mac osx
+function install_dependencies_on_mac_osx() {
+    # install OpenResty, etcd and some compilation tools
+    brew install openresty/brew/openresty luarocks [email protected] etcd curl git pcre
+
+    # start etcd server
+    brew services start etcd
+}
+
+# Identify the different distributions and call the corresponding function
+function multi_distro_installation() {
+    if grep -Eqi "CentOS" /etc/issue || grep -Eq "CentOS" /etc/*-release; then
+        DISTRO="centos"
+        install_dependencies_on_centos_and_fedora
+    elif grep -Eqi "Fedora" /etc/issue || grep -Eq "Fedora" /etc/*-release; 
then
+        DISTRO="fedora"
+        install_dependencies_on_centos_and_fedora
+    elif grep -Eqi "Debian" /etc/issue || grep -Eq "Debian" /etc/*-release; 
then
+        DISTRO="debian"
+        install_dependencies_on_ubuntu_and_debian
+    elif grep -Eqi "Ubuntu" /etc/issue || grep -Eq "Ubuntu" /etc/*-release; 
then
+        DISTRO="ubuntu"
+        install_dependencies_on_ubuntu_and_debian
+    else
+        echo "Non-supported operating system version"
+    fi
+}
+
+# Install etcd
+function install_etcd() {
+    ETCD_VERSION='3.4.13'
+    wget 
https://github.com/etcd-io/etcd/releases/download/v${ETCD_VERSION}/etcd-v${ETCD_VERSION}-linux-amd64.tar.gz
+    tar -xvf etcd-v${ETCD_VERSION}-linux-amd64.tar.gz && \
+        cd etcd-v${ETCD_VERSION}-linux-amd64 && \
+        sudo cp -a etcd etcdctl /usr/bin/
+    nohup etcd &
+}
+
+# Install LuaRocks
+function install_luarocks() {
+    curl 
https://raw.githubusercontent.com/apache/apisix/master/utils/linux-install-luarocks.sh
 -sL | bash -
+}
+
+# Entry
+function main() {
+    OS_NAME=$(uname -s | tr '[:upper:]' '[:lower:]')
+    if [[ ${OS_NAME} == "linux" ]]; then
+        multi_distro_installation
+        install_luarocks
+        install_etcd
+    elif [[ ${OS_NAME} == "darwin" ]]; then
+        install_dependencies_on_mac_osx
+    else
+        echo "Non-surported distribution"
+    fi
+}

Review comment:
       ```suggestion
   function install_dependencies_with_yum() {
       # add OpenResty repo
       sudo yum install yum-utils
       sudo yum-config-manager --add-repo 
"https://openresty.org/package/${1}/openresty.repo";
   
       # install OpenResty and some compilation tools
       sudo yum install -y openresty curl git gcc openresty-openssl111-devel 
unzip pcre pcre-devel
   }
   
   # Install dependencies on ubuntu and debian
   function install_dependencies_with_apt() {
       # add OpenResty repo
       sudo apt-get update
       sudo apt-get -y install software-properties-common wget lsb_release
       wget -qO - https://openresty.org/package/pubkey.gpg | sudo apt-key add -
       if [[ "${1}" == "ubuntu" ]]; then
           sudo add-apt-repository -y "deb http://openresty.org/package/ubuntu 
$(lsb_release -sc) main"
       elif [[ "${1}" == "debian" ]]; then
           sudo add-apt-repository -y "deb http://openresty.org/package/debian 
$(lsb_release -sc) openresty"
       fi
       sudo apt-get update
   
       # install OpenResty and some compilation tools
       sudo apt-get install -y git openresty curl openresty-openssl111-dev make 
gcc libpcre3 libpcre3-dev
   }
   
   # Install dependencies on mac osx
   function install_dependencies_on_mac_osx() {
       # install OpenResty, etcd and some compilation tools
       brew install openresty/brew/openresty luarocks [email protected] etcd curl git pcre
   
       # start etcd server
       brew services start etcd
   }
   
   # Identify the different distributions and call the corresponding function
   function multi_distro_installation() {
       if grep -Eqi "CentOS" /etc/issue || grep -Eq "CentOS" /etc/*-release; 
then
           install_dependencies_with_yum "centos"
       elif grep -Eqi "Fedora" /etc/issue || grep -Eq "Fedora" /etc/*-release; 
then
           install_dependencies_with_yum "fedora"
       elif grep -Eqi "Debian" /etc/issue || grep -Eq "Debian" /etc/*-release; 
then
           install_dependencies_with_apt "debian"
       elif grep -Eqi "Ubuntu" /etc/issue || grep -Eq "Ubuntu" /etc/*-release; 
then
           install_dependencies_with_apt "ubuntu"
       else
           echo "Non-supported operating system version"
       fi
   }
   
   # Install etcd
   function install_etcd() {
       ETCD_VERSION='3.4.13'
       wget 
https://github.com/etcd-io/etcd/releases/download/v${ETCD_VERSION}/etcd-v${ETCD_VERSION}-linux-amd64.tar.gz
       tar -xvf etcd-v${ETCD_VERSION}-linux-amd64.tar.gz && \
           cd etcd-v${ETCD_VERSION}-linux-amd64 && \
           sudo cp -a etcd etcdctl /usr/bin/
       nohup etcd &
   }
   
   # Install LuaRocks
   function install_luarocks() {
       curl 
https://raw.githubusercontent.com/apache/apisix/master/utils/linux-install-luarocks.sh
 -sL | bash -
   }
   
   # Entry
   function main() {
       OS_NAME=$(uname -s | tr '[:upper:]' '[:lower:]')
       if [[ "${OS_NAME}" == "linux" ]]; then
           multi_distro_installation
           install_luarocks
           install_etcd
       elif [[ "${OS_NAME}" == "darwin" ]]; then
           install_dependencies_on_mac_osx
       else
           echo "Non-surported distribution"
       fi
   }
   ```
   Change:
   1. Use `install_dependencies_with_yum` instead of 
`install_dependencies_on_centos_and_fedora `
   2. Use `${1}` instead of extra var `DISTRO`
   3. Ref to [#SC2086](https://github.com/koalaman/shellcheck/wiki/SC2086)
   4. Fix `lsb_release` may not found in mini install
   




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