摘要： When I think of clustering, I tend to classify clusters in three types, high availability, load balancing, and high performance computing.High Availability: No one wants any services they offer to be unreachable, especially since that downtime will almost undoubtably cost them money. High availabili 阅读全文

摘要： shutdown -y -i6 -g0 阅读全文

摘要： awk的处理是以行为标准，并以输入为驱动的。比如文件test1为只有1行的文件：[dhcc@bogon ~]$ awk '{print "hello world"}' test1hello world 如果test1为3行的文件：[dhcc@bogon ~]$ awk '{print "hello world"}' test1hello worldhello worldhello worldawk实际上是三段式分布：BEGIN-主循环体-END，BEGIN和END也是跳出输入驱动的唯一方法。 模式匹配是主循环的一部分，只有 阅读全文