Setting up a Golang development environment quickly!

golang-devenv.sh

#!/bin/bash
set -e

install_docker() {
    sudo yum install yum-utils -y
    sudo yum-config-manager \
        --add-repo \
        https://download.docker.com/linux/centos/docker-ce.repo
    sudo yum install docker-ce docker-ce-cli containerd.io -y
    sudo systemctl is-active --quiet docker || sudo systemctl start docker
    sudo systemctl is-enabled --quiet docker || sudo systemctl enable docker
}

install_dev_tools() {
    sudo yum install wget vim git tree -y
    sudo yum group install "Development tools" -y
}

install_go() {
    go_ver="1.16.4" # default go 1.16.4
    if [ -n $1 ]; then
        go_ver=$1
    fi
    wget https://golang.org/dl/go$go_ver.linux-amd64.tar.gz -P /tmp/
    sudo tar -C /usr/local -xzf /tmp/go$go_ver.linux-amd64.tar.gz
    mkdir -p $HOME/go/src $HOME/go/bin $HOME/go/pkg
    echo "export GOPATH=\$HOME/go" >> $HOME/.bashrc
    echo "export GOBIN=\$GOPATH/bin" >> $HOME/.bashrc
    echo "export PATH=\$PATH:/usr/local/go/bin:\$GOBIN" >> $HOME/.bashrc
    export GOPATH=$HOME/go
    export GOBIN=$GOPATH/bin
    export PATH=$PATH:/usr/local/go/bin:$GOBIN
    go version
    rm -rf /tmp/go$go_ver.linux-amd64.tar.gz
}

main() {
    if [[ $(systemctl cat firewalld.service > /dev/null 2>&1) -eq 0 ]]; then
        sudo systemctl is-active --quiet firewalld && sudo systemctl stop firewalld
        sudo systemctl is-enabled --quiet firewalld && sudo systemctl disable firewalld
    fi
    sudo yum update -y
    install_dev_tools
    install_docker
    install_go $1
}

main "$@"