skillfulit的专栏

mongodb find rewrite mongodb find 查询转换与重写，在语义和实际结果相同的前提下，实现 文章目录mongodb find rewritewrite 1find coderesultexplainwrite 2find coderesultexplainwrite 3find coderesultexplain write 1 find code db.inventory.find({$and:[{qty:{$gt:50,$lt:100,$type:1}}]}) resu

修改文件/etc/default/grub ，在GRUB_CMDLINE_LINUX部分中增加“transparent_hugepage=never” [root@dbps ~]# cat /etc/default/grub  GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_...

1、清除redhat yum相关的包 rpm -qa | grep yum |xargs rpm -e --nodeps [root@ogg12c ~]# rpm -qa | grep yum |xargs rpm -e --nodeps [root@ogg12c ~]# [root@ogg12c ~]# [root@ogg12c ~]# rmp -qa | grep yum -bash:...