Centos升级Ruby

使用rvm

1	`yum install -y rubygems ruby-devel`

1	`gem sources --remove https://rubygems.org/`

1	`gem sources -a https://mirrors.aliyun.com/rubygems/`

1	`gem sources -l`

1 2	`curl -sSL https://rvm.io/mpapis.asc \| gpg --import - curl -sSL https://rvm.io/pkuczynski.asc \| gpg --import -`

1	`\curl -sSL https://get.rvm.io \| bash -s stable`

1	`source /etc/profile.d/rvm.sh`

1	`rvm list known`

1	`rvm install 3.3`

ruby -v

2020

#Linux

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