一配置yum源
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
[root@centos7 ~]# cat /etc/yum.repos.d/CentOS-Base.repo # CentOS-Base.repo # # The mirror system uses the connecting IP address of the client and the # update status of each mirror to pick mirrors that are updated to and # geographically close to the client. You should use this for CentOS updates # unless you are manually picking other mirrors. # # If the mirrorlist= does not work for you, as a fall back you can try the # remarked out baseurl= line instead. # # [base] name=CentOS-$releasever - Base - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos/$releasever/os/$basearch/ http://mirrors.aliyuncs.com/centos/$releasever/os/$basearch/ http://mirrors.cloud.aliyuncs.com/centos/$releasever/os/$basearch/ gpgcheck=1 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7 #released updates [updates] name=CentOS-$releasever - Updates - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos/$releasever/updates/$basearch/ http://mirrors.aliyuncs.com/centos/$releasever/updates/$basearch/ http://mirrors.cloud.aliyuncs.com/centos/$releasever/updates/$basearch/ gpgcheck=1 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7 #additional packages that may be useful [extras] name=CentOS-$releasever - Extras - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos/$releasever/extras/$basearch/ http://mirrors.aliyuncs.com/centos/$releasever/extras/$basearch/ http://mirrors.cloud.aliyuncs.com/centos/$releasever/extras/$basearch/ gpgcheck=1 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7 #additional packages that extend functionality of existing packages [centosplus] name=CentOS-$releasever - Plus - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos/$releasever/centosplus/$basearch/ http://mirrors.aliyuncs.com/centos/$releasever/centosplus/$basearch/ http://mirrors.cloud.aliyuncs.com/centos/$releasever/centosplus/$basearch/ gpgcheck=1 enabled=0 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7 #contrib - packages by Centos Users [contrib] name=CentOS-$releasever - Contrib - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos/$releasever/contrib/$basearch/ http://mirrors.aliyuncs.com/centos/$releasever/contrib/$basearch/ http://mirrors.cloud.aliyuncs.com/centos/$releasever/contrib/$basearch/ gpgcheck=1 enabled=0 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
[root@centos7 ~]# cat /etc/yum.repos.d/epel.repo [epel] name=Extra Packages for Enterprise Linux 7 - $basearch baseurl=http://mirrors.aliyun.com/epel/7/$basearch failovermethod=priority enabled=1 gpgcheck=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 [epel-debuginfo] name=Extra Packages for Enterprise Linux 7 - $basearch - Debug baseurl=http://mirrors.aliyun.com/epel/7/$basearch/debug failovermethod=priority enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 gpgcheck=0 [epel-source] name=Extra Packages for Enterprise Linux 7 - $basearch - Source baseurl=http://mirrors.aliyun.com/epel/7/SRPMS failovermethod=priority enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 gpgcheck=0
二安装必要的软件包
[root@centos71 ~]# yum install bash-completion Loaded plugins: fastestmirror Repository base is listed more than once in the configuration Loading mirror speeds from cached hostfile * base: mirrors.aliyun.com * extras: mirrors.aliyun.com * updates: mirrors.aliyun.com Package 1:bash-completion-2.1-6.el7.noarch already installed and latest version Nothing to do [root@centos71 ~]# yum install -y vim tree telnet nc nmap net-tools wget bash-completion lrzsz chrony bc net-tools Loaded plugins: fastestmirror Repository base is listed more than once in the configuration Loading mirror speeds from cached hostfile * base: mirrors.aliyun.com * extras: mirrors.aliyun.com * updates: mirrors.aliyun.com Package 2:vim-enhanced-7.4.629-6.el7.x86_64 already installed and latest version Package tree-1.6.0-10.el7.x86_64 already installed and latest version Package 1:telnet-0.17-64.el7.x86_64 already installed and latest version Package 2:nmap-ncat-6.40-19.el7.x86_64 already installed and latest version Package 2:nmap-6.40-19.el7.x86_64 already installed and latest version Package net-tools-2.0-0.25.20131004git.el7.x86_64 already installed and latest version Package wget-1.14-18.el7_6.1.x86_64 already installed and latest version Package 1:bash-completion-2.1-6.el7.noarch already installed and latest version Package lrzsz-0.12.20-36.el7.x86_64 already installed and latest version Package chrony-3.4-1.el7.x86_64 already installed and latest version Package bc-1.06.95-13.el7.x86_64 already installed and latest version Package net-tools-2.0-0.25.20131004git.el7.x86_64 already installed and latest version Nothing to do
三创建目录
[root@centos71 ~]# ls /shell_scriprs/ -d /shell_scriprs/ [root@centos71 ~]# ls /app/ cmatrix-1.2a cmatrix-1.2a.tar.gz
四设置别名
[root@centos71 ~]# alias alias catnet0='cat /etc/sysconfig/network-scripts/ifcfg-eth0' alias cp='cp -i' alias egrep='egrep --color=auto' alias fgrep='fgrep --color=auto' alias grep='grep --color=auto' alias l.='ls -d .* --color=auto' alias ll='ls -l --color=auto' alias ls='ls --color=auto' alias mv='mv -i' alias rm='rm -i' alias vinet0='vim /etc/sysconfig/network-scripts/ifcfg-eth0' alias which='alias | /usr/bin/which --tty-only --read-alias --show-dot --show-tilde'
五设置快速远程连接
[root@centos71 ~]# cat /etc/ssh/sshd_config | grep -i "dns" UseDNS no [root@centos71 ~]# cat /etc/ssh/sshd_config | grep -i "GSSAPIauth" GSSAPIAuthentication no