配置文件集合

1、alias别名

vim /etc/bashrc
alias xiao='ls -l /tmp'
source /etc/bashrc

2、sudo提权

[root@xiaochen ~]#  vim /etc/sudoers
%wheel  ALL=(ALL)       NOPASSWD: ALL

[root@xiaochen ~]# visudo //可以验证sudoers文件是否有语法错误

3、==开机自动挂载 /etc/fstab、/etc/rc.local

1./etc/rc.local  进入系统前的最后一个执行脚本
[root@localhost ~]#   chmod +x /etc/rc.local 
[root@localhost ~]  ll /etc/rc.local 
lrwxrwxrwx. 1 root root 13 8月  22 2017 /etc/rc.local -> rc.d/rc.local
[root@localhost ~]#  systemctl enable rc-local
[root@localhost ~] vim /etc/rc.local
mount /dev/sdb1 /opt

3.2

[root@xiaochen ~]# blkid 
/dev/sdb1: UUID="653a949d-ebf5-4543-9f67-4b71cbe5cf2b" TYPE="ext4" 
/dev/sdb2: UUID="7ca49b1d-5359-413f-83aa-ed51c7421877" TYPE="ext4" 
[root@xiaochen ~]# vim /etc/fstab
UUID="653a949d-ebf5-4543-9f67-4b71cbe5cf2b" /mnt/disk1          ext4    ro,noauto           0 0
UUID="7ca49b1d-5359-413f-83aa-ed51c7421877" /mnt/disk2          ext4    defaults        0   0
[root@xiaochen ~]# mount -a                     //读取/etc/fstab并挂载

4.yum的配置文件

[root@xiaochen ~]# vim /etc/yum.conf

5.rsyslog配置文件

/etc/logrotate.d/syslog                      //和日志的轮转（切割）相关
/etc/rsyslog.conf                    //rsyslogd的主配置文件
/etc/sysconfig/rsyslog                       //rsyslogd相关文件