ubuntu无法安装 git
解决办法一

add-apt-repository -y ppa:git-core/ppa 
apt update
apt install git

解决办法二

sudo curl -L https://github.com/AndyYoungDev/ubuntu-aliyun-sources/releases/download/shell/change.sh | bash
apt update
apt install git

安装nodejs npm pm2
linux

wget https://cdn.npm.taobao.org/dist/node/v14.15.4/node-v14.15.4-linux-x64.tar.xz
    tar -xvf node-v14.15.4-linux-x64.tar.xz
    mv node-v14.15.4-linux-x64 nodejs

ubuntu

echo "export NODE_HOME=/opt/software/nodejs/bin/" >> /etc/profile
 source /etc/profile
 echo "export PATH=$NODE_HOME:$PATH" >> /etc/profile
 source /etc/profile

Centos

ln -s /opt/software/nodejs/bin/npm /usr/local/bin/ 
ln -s /opt/software/nodejs/bin/node /usr/local/bin/

pm2
第一种：

npm config set registry https://registry.npm.taobao.org
npm install || npm install --registry=https://registry.npm.taobao.org
npm install -g pm2 
ln -s /opt/software/nodejs/bin/pm2 /usr/local/bin/

第二种

cd /opt/software/nodejs/lib/node_modules/
wget http://lcy828.cn/pm2.tar
tar -xvf pm2.tar
ln -s /opt/software/nodejs/lib/node_modules/pm2/bin/pm2 /usr/local/bin/pm2

注意在shell脚本中
用ln软连接后可能会出现脚本内无法使用
而脚本运行完却可以执行
此时可以

echo $PATH

然后在shell
脚本加入这一行

PATH="/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/sbin:/usr/sbin"