常用

内核参数

#必须要是0
net.ipv4.tcp_tw_recycle = 0

ip检测

curl ipinfo.io

curl ifconfig.me

https://tcp.ping.pe/1.1.1.1:80

https://checkip.amazonaws.com/

https://www.ip111.cn/

地理位置数据库 IPinfo 推出的免费服务，IP 查询地理位置，无需信用卡，API 请求次数不受限制。 https://ipinfo.io/

下载测试

#查看是否命中节点
curl -v -I https://xxx.com/1.json

curl -o /dev/null -s -w 'time_connect %{time_connect}\ntime_starttransfer %{time_starttransfer}\ntime_total %{time_total}\n'  https://xxx.com/1.json

检查是否压缩
curl -H "Accept-Encoding: gzip" -I https://xxx.com/1.js

磁盘分区

mkfs.ext4 /dev/sdb
mount /dev/sdb /data
echo "/dev/sdb  /data                   ext4    defaults        0 0" >>/etc/fstab


lsblk -l
ll /dev/disk/by-uuid/

#编辑 /etc/fstab  增加一行
UUID=eebd4d4b-f900-48d2-966d-07ee05b76a7b  /data                   ext4    defaults        0 0

rocky9配置网卡

/etc/NetworkManager/system-connections/ens18.nmconnection
nmcli connection down ens18 && nmcli connection up ens18

[ipv4]
address1=10.10.10.81/24,10.10.10.1
dns=114.114.114.114;
method=manual

[ipv6]
method=ignore

nmcli connection reload
nmcli connection up ens192

其它

#iconv -f 原本编码 -t 新编码 filename [-o newfile]
iconv -f utf8 -t gb2312 iplist -o iplistnew
iconv -f utf8 -t gb2312 zs.csv -o dd.csv

#修改计算机名
echo "xx-xx" >/etc/hostname
hostname -F /etc/hostname

#修改语系
cat /etc/locale.conf 
LANG="zh_CN.UTF-8"
LANG="en_US.UTF-8"

#安装常用包
yum install -y virt-what
yum install -y net-tools.x86_64
yum install nc net-tools sshpass wget curl gcc openssl-devel pcre-devel zlib-devel bash-com* dos2unix expect mysql vim-common vim-enhanced unzip zip sysstat make rsync bind-utils bc libaio telnet ftp lsof

# cenos7安装python3
yum install python36 python36-pip

#时间同步服务器
*/5 * * * * /usr/sbin/ntpdate ntp1.aliyun.com >/root/web.time
/usr/sbin/ntpdate ntpupdate.tencentyun.com
/usr/sbin/ntpdate ntp1.aliyun.com
/usr/sbin/ntpdate ntp.ksyun.cn
/usr/sbin/ntpdate time.windows.com
1.tw.pool.ntp.org
ntpdate cn.pool.ntp.org
/usr/bin/rdate -s time-b.nist.gov


systemctl stop ntpd
ntpdate ntp7.cloud.aliyuncs.com
systemctl start ntpd

systemctl enable chronyd.service


#linux
route add -net 10.13.12.0  netmask 255.255.252.0 gw 10.10.10.2

#windows
route add -P 10.10.10.0 mask 255.255.254.0 10.13.13.2

pkill -kill -t tty1

python -m SimpleHTTPServer 6666

#更换阿里源
https://developer.aliyun.com/mirror/
wget -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
#清除缓存
yum clean all
#生成缓存
yum makecache

systemctl is-enabled supervisord.service
/usr/lib/systemd/system/supervisord.service

生成key

ssh-keygen -t ed25519
ssh-keygen -t rsa

常用

内核参数

ip检测

拨测

收集localdns

宽带测速

下载测试

磁盘分区

rocky9配置网卡

其它

生成key