#!/bin/bash

#update soft
apt update && apt upgrade
apt install wget tar curl rsync bzip2 lsof telnet htop screen tree vim gcc tree git make net-tools lrzsz psmisc hwloc gsmartcontrol chrony -y

#时间设置 
timedatectl set-local-rtc 1
timedatectl set-timezone Asia/Shanghai
systemctl start chrony
systemctl enable chrony


cat <<EOF | sudo tee /lib/systemd/system/rc.local.service
[Unit]
Description=/etc/rc.local Compatibility
Documentation=man:systemd-rc-local-generator(8)
ConditionFileIsExecutable=/etc/rc.local
After=syslog.target network.target remote-fs.target nss-lookup.target

[Service]
Type=forking
ExecStart=/etc/rc.local start
TimeoutSec=0
RemainAfterExit=no
GuessMainPID=no

[Install]
WantedBy=multi-user.target
Alias=rc-local.service
EOF

ln -s /lib/systemd/system/rc.local.service /etc/systemd/system/rc.local.service


cat <<EOF | sudo tee /etc/rc.local
#!/bin/bash
# 将你需要执行的命令写在这里，禁止写入死循环命令

exit 0
EOF

chmod 755 /etc/rc.local

#设置最大打开文件描述符数
cat >> /etc/security/limits.conf <<EOF
*           soft   nofile       65535
*           hard   nofile       65535
EOF

#set ssh
sed -i 's/^GSSAPIAuthentication yes$/GSSAPIAuthentication no/' /etc/ssh/sshd_config
sed -i 's/#UseDNS yes/UseDNS no/' /etc/ssh/sshd_config
systemctl  restart sshd.service


# profile 修改
echo "export HISTTIMEFORMAT=\"%F %T \"" >> /etc/profile
echo "" >> /etc/profile
echo "## 自定义别名" >> /etc/profile
echo "alias c=clear" >> /etc/profile
echo "alias vi=vim" >> /etc/profile
echo "alias dsh='du -hsx * | sort -rh | head -n 10'" >> /etc/profile
sed -i 's/HISTSIZE=1000/HISTSIZE=10000/g' /etc/profile
source /etc/profile