伺服器上 mysql 版本的 serverspec if 語句

有沒有辦法通過命令輸出檢查伺服器上安裝的軟體包？

describe command('mysql -e "select version();"') do
 if its(:stdout) { should =~ /5.6.27-76.0-log/ } 
   describe package('MySQL-client') do
   it { should be_installed }
 else
   describe package('Percona-client') do
   it { should be_installed }
 end
end

謝謝，

好吧，我想不出比這更好的方法了：

def mysql_version
 command('mysql -e "select version();"').stdout
end

def plain_mysql?
 mysql_version =~ /5.6.27-76.0-log/
end

def mysql_package_name
 if plain_mysql?
   'MySQL-client'
 else
   'Percona-client'
 end
end

describe package(mysql_package_name) do
 it { should be_installed }
end

引用自：https://serverfault.com/questions/785499