linux更新ssh8.3脚本教程

#!/bin/bash

if [ "$(whoami)" != "root" ]
then
    echo -e "You must be root to run this script"
    exit 1
fi

set -x
set -e

ZLIB=1.2.11
#download_url=http://www.zlib.net/zlib-1.2.11.tar.gz
OPENSSL=1.1.1g
#download_url=https://www.openssl.org/source/openssl-1.1.1g.tar.gz
OPENSSH=8.3p1
#download_url=https://fastly.cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-8.2p1.tar.gz

function update_sources(){
    sed -i 's/cn.archive.ubuntu.com/mirrors.huaweicloud.com/g' /etc/apt/sources.list
    sed -i 's/security.ubuntu.com/mirrors.huaweicloud.com/g' /etc/apt/sources.list

    apt update 
    apt install -y gcc make
}
update_sources

function INSTALL_ZLIB(){
    wget http://www.zlib.net/zlib-${ZLIB}.tar.gz -O /tmp/zlib-${ZLIB}.tar.gz
    cd /tmp/
    tar -xvf zlib-${ZLIB}.tar.gz
    cd /tmp/zlib-${ZLIB}
    ./configure
    make -j4
    make install
    cd ..
}

function INSTALL_OPENSSL(){
    wget https://www.openssl.org/source/openssl-${OPENSSL}.tar.gz -O /tmp/openssl-${OPENSSL}.tar.gz
    if [ -f /usr/bin/openssl ]; then
        mv /usr/bin/openssl /usr/bin/openssl.old
    fi
    cd /tmp
    tar -xvf openssl-${OPENSSL}.tar.gz
    cd openssl-${OPENSSL}
    ./config
    make -j4 
    make install 

    ldconfig 

    openssl version
    cd ..
}

function INSTALL_OPENSSH(){
    apt install -y libpam0g-dev 
    wget https://fastly.cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-${OPENSSH}.tar.gz -O /tmp/openssh-${OPENSSH}.tar.gz
    cd /tmp
    tar -xvf openssh-${OPENSSH}.tar.gz
    cd openssh-${OPENSSH}
    ./configure  --sysconfdir=/etc/ssh --with-md5-passwords --with-pam --with-zlib --with-ssl-dir=/usr/local/ssl --with-privsep-path=/var/lib/sshd
    make -j4
    make install

    ssh -V
    cd ..
}

INSTALL_ZLIB
INSTALL_OPENSSL
INSTALL_OPENSSH