第四周作业

自建yum仓库，分别为网络源和本地源

[base]
name=base
baseurl=file:///mnt/package
        https://mirrors.cloud.tencent.com/centos/$releasever/os/x86_64/
        https://repo.huaweicloud.com/centos/$releasever/os/x86_64/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
       https://mirrors.cloud.tencent.com/centos/$releasever/os/x86_64/RPM-GPG-KEY-CentOS-7
       https://repo.huaweicloud.com/centos/$releasever/os/x86_64/RPM-GPG-KEY-CentOS-7
 
[epel]
name=epel
baseurl=file:///var/www/html/epel
        http://mirrors.cloud.tencent.com/epel/$releasever/x86_64/
        https://mirrors.huaweicloud.com/epel/7/x86_64/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
       http://mirrors.cloud.tencent.com/epel/RPM-GPG-KEY-EPEL-7
       https://mirrors.huaweicloud.com/epel/RPM-GPG-KEY-EPEL-7

[root@ansible ~]# yum repolist
已加载插件：fastestmirror, langpacks
Determining fastest mirrors
 * base:
 * epel:
base                                                                                                     | 2.9 kB  00:00:00
epel                                                                                                     | 2.9 kB  00:00:00
(1/2): base/7/primary_db                                                                                 | 3.2 MB  00:00:00
(2/2): epel/7/primary_db                                                                                 | 6.9 MB  00:00:00
源标识                                                        源名称                                                      状态
base/7                                                        base                                                         4,070
epel/7                                                        epel                                                        13,743
repolist: 17,813

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

将编译过程写成脚本

#!/bin/bash
core=`lscpu | sed -rn '/^CPU\(/s/.*: +(.*)/\1/p'`
sed -i '/0/a\[epel]\nname=epel\nbaseurl=http://10.0.6.25/epel\nenabled=1\ngpgcheck=0' /etc/yum.repos.d/local.repo
yum clean all
yum install -y wget bzip2 apr-devle apr-util-devel gcc pcre-devel
wget https://dlcdn.apache.org//httpd/httpd-2.4.52.tar.bz2 --no-check-certificate || { echo "下载失败，重试" ; exit; }
tar jxvf httpd-2.4.52.tar.bz2
cd httpd-2.4.52
./configure
make -j$core
make install
echo 'PATH=/usr/local/apache2/bin/:$PATH' > /etc/profile.d/httpd.sh
. /etc/profile.d/httpd.sh
groupadd -g 1020 -r apache5
useradd -g apache5 -u 1020 -s /sbin/nologin apache5
sed -i -e 's#User daemon#User apache5#' -e 's#Group daemon#Group apache5#' /usr/local/apache2/conf/httpd.conf
apachectl -k start
apachectl -k restart
firewall-cmd --zone=public --add-port=80/tcp --permanent<br>systemctl restart firewalld

编译成功,可以访问

利用sed 取出ifconfig命令中本机的IPv4地址

1 2	`ifconfig` `eth0 \|` `sed` `-rn` `'s/inet +(.) +n./\1/p'` `10.0.6.25`

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

[root@ansible srete]# sed  '/^#/d;/^$/d' /etc/fstab
/dev/mapper/centos-root /                       xfs     defaults        0 0
UUID=fa726e04-47d9-4081-a349-8f4e16c83ff0 /boot                   xfs     defaults        0 0
/dev/mapper/centos-swap swap                    swap    defaults        0 0

处理/etc/fstab路径,使用sed命令取出其目录名和基名

1 2	`[root@ansible ~]# echo /etc/fstab \| sed -rn 's@/(.)/(.)@\1 \2@p'` `etc fstab`

列出ubuntu软件管理工具apt的一些用法(自由总结)

apt命令用法和yum类似，可以实现ubuntu系统下，软件的安装，卸载查看等功能

个人常用的apt命令有

apt install：用来安装ubuntu软件，和yum install类似，跟上--reinstall参数可以重新安装指定的包
 
apt remove:卸载软件，和yum remove类似，删除后会保留软件配置文件，若想完全删除需跟 -purge选项
 
apt update:更新apt缓存，更换过apt源之后需要使用此命令更新apt缓存，centos使用yum clean all来清空yum缓存
 
apt list --upgradable:查看可以更新的软件包 和yum check-update类似，apt list后可以跟软件包名，查看软件包名称和有无安装
 
apt show xxx:查看软件包信息和yum info xxx类似
 
apt upgrade:更新已安装的包，和yum update类似
 
apt clean:删除下载的包文件