1、自建yum仓库，分别为网络源和本地源
配置本地源（centos7光驱源）：
1.挂载光驱至/mnt/cdrom
mount /dev/cdrom /mnt/cdrom
2.修改镜像源配置文件
vim /etc/yum.repos.d/centos7.repo [CentOS7] name=CentOS 7 baseurl=file:///mnt/cdrom gpgcheck=0 enabled=1
3.清理yum缓存
yum clean all yum makecache
配置网络源（centos7阿里云）：
1.备份yum源镜像文件
mv CentOS-Base.repo CentOS-Base.repo.bak
2.下载阿里云yum源镜像配置文件
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
3.清理yum缓存
yum clean all
yum makecache
配置网络源和本地源（Centos8）
vim /etc/yum.repos.d/base.repo [BaseOS] name=BaseOS baseurl=file:///misc/cd/BaseOS baseurl=https://repo.huaweicloud.com/centos/$releasever/ gpgcheck=1 gpgkey=/etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial [AppStream] name=AppStream baseurl=file:///misc/cd/AppStream baseurl=https://mirrors.huaweicloud.com/epel/$releasever/x86_64 gpgcheck=0 [epel] name=EPEL baseurl=http://mirrors.aliyun.com/epel/$releasever/Everything/$basearch gpgcheck=0 enabled=1 [extras] name=extras baseurl=https://mirrors.aliyun.com/centos/$releasever/extras/$basearch/os gpgcheck=0
2、编译安装http2.4，实现可以正常访问，并将编译步骤和结果提交。
1.安装相关包
yum install gcc make autoconf apr-devel apr-util-devel pcrdevel openssl-devel redhat-rpm-confige
2.下载httpd安装包并解压缩
wget https://dlcdn.apache.org//httpd/httpd-2.4.52.tar.bz2 --no-check-certificate tar xvf httpd-2.4.52.tar.bz2 -C /usr/local/src/
3.配置
cd /usr/local/src/httpd-2.4.52/ ./configure --prefix=/apps/httpd --sysconfdir=/etc/httpd --enable-ssl
4.编译并安装
make && make install
5.配置环境
echo 'PATH=/apps/httpd/bin:$PATH' > /etc/profile.d/httpd.sh . /etc/profile.d/httpd.sh
6.运行apache
apachectl start
7.查看进程
ps aux|grep httpd
3、利用sed 取出ifconfig命令中本机的IPv4地址
ifconfig eth0|sed -n '2p'|sed -nr 's#(.*inet)(.*)(.*netmask.*)#\2#p' 10.0.0.150
4、删除/etc/fstab文件中所有以#开头，后面至少跟一个空白字符的行的行首的#和空白字符
sed -r 's/^#[[:space:]]*//' /etc/fstab /etc/fstab Created by anaconda on Fri Dec 3 07:57:29 2021 Accessible filesystems, by reference, are maintained under '/dev/disk/'. See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info. After editing this file, run 'systemctl daemon-reload' to update systemd units generated from this file. UUID=0962b57e-f628-4d58-9345-7b2f9aeb94ca / xfs defaults 0 0 UUID=857dafd5-a92f-4f6a-bf06-b2a5ef3239f6 /boot ext4 defaults 1 2 UUID=2aa8c67e-2768-484f-90e5-860a3a58e467 /data xfs defaults 0 0 UUID=ef5b3393-dc3f-4507-8321-7b75ea06a989 none swap defaults 0 0 UUID=dcbee5a2-5c24-4de0-939e-259dc3f959f8 /mnt ext4 defaults UUID=78530e66-05ef-4345-b5b0-5c3232f0e047 /data/mysql ext4 defaults
5、处理/etc/fstab路径,使用sed命令取出其目录名和基名
echo "/etc/fstab"| sed -r 's#^/(.*)/(.*)#\1#' etc echo "/etc/fstab"| sed -r 's#^/(.*)/(.*)#\2#' fstab
6、列出ubuntu软件管理工具apt的一些用法(自由总结)
apt install 安装软件包
apt remove 移除软件包
apt purge 移除软件包以及配置文件
apt list 列出包含条件的包
apt search 搜索应用程序
apt show 显示安装细节
apt upgrade 升级所有可升级的包
apt update 刷新存储库索引