linux centos 关闭swap分区 1.关闭swap swapoff -a 2.取消挂载，注释掉swap行 vi /etc/fstab 3.重启测试 reboot free -h
Linux centos jar 包开机自启动 vi /etc/systemd/system/dog.service [Unit] Description = dog service After = network.target syslog.target Wants = network.ta
linux centos 安装openjdk 1.8： sudo yum install -y java-1.8.0-openjdk-devel.x86_64 sudo echo export JAVA_HOME=/usr/lib/jvm/java >> /etc/profile sudo ech
问题： nslookup www.baidu.com -bash: nslookup: command not found 解决方案： yum -y install bind-utils
