1. 查找/var目錄下不屬于root侥涵、lp裂问、gdm的所有文件
- find /var -not ( -user root -o -user gdm -o -user lp ) -ls
2. 統(tǒng)計/etc/init.d/functions文件中每個單詞的出現(xiàn)次數(shù)，并排序（用grep和sed兩種方法分別實現(xiàn)）
- grep -Eo "[a-zA-Z]+" /etc/init.d/functions |sort|uniq -c|sort -nr
- sed -nr "s/[^[:alpha:]]+/\n/pg" /etc/init.d/functions|sort|uniq -c|sort -nr
3. 利用sed取出ifconfig命令中本機的IPv4地址
ifconfig eth0|sed -nr "s/.inet (addr:)?([^ ]+)./\1/p"
4. 總結yum的配置和使用张峰，包括yum倉庫的創(chuàng)建
- yum的配置
/etc/yum.conf yum的全局配置文件
/etc/yum.repos.d/*.repo yum倉庫的配置文件都存放在這里 - yum的使用
- yum install 安裝包
- yum reinstall 重新安裝包
- yum remove 移除包
- yum update 升級包
- yum downgrade 降級包
- yum check-update 檢查可用升級
- yum info 查看包的信息
- yum provides 后面跟文件泪蔫，可以查看此文件是哪個包提供的
- yum repolist 顯示倉庫列表
-yum list 顯示包列表 - yum search 搜索包
-yum deplist 查看指定的包所依賴的包 - yum history 查看yum事物歷史
yum history [info|list|packages-list|packages-info| summary|addon-info|redo|undo|rollback|new|sync|stats]
yum history redo 重做 yum history rollback 回滾 undo 撤銷 - yum clean all 清除本地緩存，路徑在/var/cache/yum/
releasever里的文件
- yum group install 安裝包組
- yum group remove 移除包組
- yum group list 顯示包組
- yum group info 顯示包組信息
- yum 倉庫的創(chuàng)建
- 在/etc/yum.repos.d/目錄下創(chuàng)建后綴為.repo的文件
- [] 里面添加倉庫的名字
- name= 可有可無喘批，倉庫的說明內容
- baseurl=倉庫的路徑
- gpgcheck= 1表示需要檢查包的完整性撩荣，后面需要添加gpgkey=的路徑，0代表不檢查
- 倉庫支持的變量：
basearch=系統(tǒng)的平臺：x86_64
5. 編寫系統(tǒng)初始化腳本reset.sh ,包括別名餐曹，提示符，yum倉庫
#!/bin/bash
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin
export PATH
#別名
echo 'alias vi='vim'' >> ~/.bashrc
echo 'alias yy='yum -y'' >> ~/.bashrc
echo 'alias scandisk='echo - - - > /sys/class/scsi_host/host2/scan'' >> ~/.bashrc
#提示符顏色
echo 'PS1="\[\e[1;41;33m\][\u@\h \W]\\$\[\e[0m\]"' >> /etc/profile.d/env.sh
#yum倉庫
mkdir /etc/yum.repos.d/bak
mv /etc/yum.repos.d/*.repo /etc/yum.repos.d/bak
cat >> /etc/yum.repos.d/base.repo <<\EOF
[development]
name=CentOS-$releasever - Base - 163.com
baseurl=http://mirrors.163.com/centos/$releasever/os/$basearch/
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7
[epel]
baseurl=https://mirrors.aliyun.com/epel/$releasever/$basearch/
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/epel/RPM-GPG-KEY-EPEL-7
#released updates
[updates]
name=CentOS-$releasever - Updates - 163.com
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
baseurl=http://mirrors.163.com/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras - 163.com
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
baseurl=http://mirrors.163.com/centos/$releasever/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus - 163.com
baseurl=http://mirrors.163.com/centos/$releasever/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7
EOF
6. 安裝tree,ftp,lftp,telnet等包
yum install tree ftp lftp telnet
7. 在centos7上編譯安裝apache2.4源碼包敌厘，并啟動服務
- wget https://www.apache.org/dist/httpd/httpd-2.4.39.tar.bz2
- tar xvf httpd-2.4.39.tar.bz2
- cd httpd-2.4.39
- ./configure --prefix=/usr/local/apache
- make && make install
- /usr/local/apache/bin/httpd -k start
