apt update && apt -y install pssh

nano pssh_hosts.txt

ip
user@ip
user@ip:端口

ip a

ss src 本机接口IP | grep :要查看的端口 | wc -l

apt update && apt install -y iftop

echo "deb http://deb.debian.org/debian/ unstable main" > /etc/apt/sources.list.d/unstable.list
printf 'Package: *\nPin: release a=unstable\nPin-Priority: 90\n' > /etc/apt/preferences.d/limit-unstable
apt update
apt install -y wireguard

echo 1 > /proc/sys/net/ipv4/ip_forward
echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf
sysctl -p

ffmpeg -i in.mov -vf "transpose=1" out.mov

0 = 90CounterCLockwise and Vertical Flip (default)
1 = 90Clockwise
2 = 90CounterClockwise
3 = 90Clockwise and Vertical Flip

cat /etc/ssh/sshd_config | grep -C 1 'PasswordAuthentication'

sed -i 's/^#\?\(PasswordAuthentication\s*\).*$/\1 no/' /etc/ssh/sshd_config

cat /etc/ssh/sshd_config | grep -C 1 'PasswordAuthentication'

ssh-keygen -t rsa -f ~/.ssh/id_rsa -q -N ""

mkdir -p ~/.ssh && touch ~/.ssh/authorized_keys
cat > ~/.ssh/authorized_keys << EOF
ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAQEApmKkzrqBMypdNo0oG78IvW+zm2A5duadj7z89d6jam4xguYyZY5r5Ql+ZTJirKhV0hsGqqAIjia3iQ7GpmAqpBN5imJIDtuDldoJHatYiHhNRxQf/hQ/XTOcJg3MInyHLU7jcFsIHUi+CxSjJfR+SN3B0/dUl93g8khD562nQp8pMqIEEHF2qGMQ9O2KhpUvKfXJRYBGpyEJ8E+Hf/1SK2Bp++mWVuzGqaniktSy9XHtmnPujN0/rREwbO7NOsAhDpDR2OzoJba3AxIMCnYlU/FCrZ1GGEKi+reGk49Nommcxn+RCb9maiY+6g0aXu+tbXlRSaRjCUjPIidgRWps9w== rsa-key-20180502
EOF

swapon --show
cat /proc/swaps

echo "3" > /proc/sys/vm/drop_caches

swapoff -a

/etc/init.d/nginx stop

/etc/init.d/nginx start

chattr -i /网站目录/.user.ini

npm install pm2 -g

apt update && apt install curl && curl -sL https://raw.githubusercontent.com/Unitech/pm2/master/packager/setup.deb.sh | bash -

pm2 start app.js