下面脚本看下shell脚本源码安装nginx的过程。
[root@localhost ~]# vim nginx.sh
[root@localhost ~]# cat nginx.sh
#!/bin/bash
version=nginx-1.20.1.tar.gz
name=nginx-1.20.1
install_dir=/usr/local
log=/var/log/nginx
#解决依赖关系
yum -y install gcc pcre pcre-devel zlib zlib-devel openssl openssl-devel wget gd-devel gcc gcc-c++
yum -y groups mark install 'Development Tools'
#创建用户
id nginx &>/dev/null
if [ $? -ne 0 ];then
useradd -s /sbin/nologin nginx
fi
#创建日志存放目录
if [ ! -d $log ];then
mkdir -p /var/log/nginx
chown -R nginx.nginx /var/log/nginx
fi
#下载nginx
cd /usr/src/
wget http://nginx.org/download/$version
#解压
tar xf $version
mv $name nginx
cd nginx/ && ./configure \
--prefix=$install_dir/nginx \
--user=nginx \
--group=nginx \
--with-debug \
--with-http_ssl_module \
--with-http_realip_module \
--with-http_image_filter_module \
--with-http_gunzip_module \
--with-http_gzip_static_module \
--with-http_stub_status_module \
--http-log-path=$log/access.log \
--error-log-path=$log/error.log
make && make install
#配置环境变量
echo "export PATH=$install_dir/nginx/sbin:\$PATH" > /etc/profile.d/nginx.sh
source /etc/profile.d/nginx.sh
#创建服务文件
cat > /usr/lib/systemd/system/nginx.service <<EOF
[Unit]
Description=nginx
After=network.target
[Service]
Type=forking
ExecStart=$install_dir/nginx/sbin/nginx
ExecReload=$install_dir/nginx/sbin/nginx -s reload
ExecStop=$install_dir/nginx/sbin/nginx -s quit
PrivateTmp= true
[Install]
WantedBy=multi-user.target
EOF
#开机自启
systemctl enable --now nginx
//测试
[root@localhost ~]# ./nginx.sh
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
软件包 gcc-4.8.5-44.el7.x86_64 已安装并且是最新版本
软件包 pcre-8.32-17.el7.x86_64 已安装并且是最新版本
软件包 pcre-devel-8.32-17.el7.x86_64 已安装并且是最新版本
软件包 zlib-1.2.7-19.el7_9.x86_64 已安装并且是最新版本
软件包 zlib-devel-1.2.7-19.el7_9.x86_64 已安装并且是最新版本
软件包 1:openssl-1.0.2k-22.el7_9.x86_64 已安装并且是最新版本
软件包 1:openssl-devel-1.0.2k-22.el7_9.x86_64 已安装并且是最新版本
软件包 wget-1.14-18.el7_6.1.x86_64 已安装并且是最新版本
软件包 gd-devel-2.0.35-27.el7_9.x86_64 已安装并且是最新版本
软件包 gcc-4.8.5-44.el7.x86_64 已安装并且是最新版本
软件包 gcc-c++-4.8.5-44.el7.x86_64 已安装并且是最新版本
无须任何处理
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
Marked install: Development Tools
--2021-10-25 12:15:53-- http://nginx.org/download/nginx-1.20.1.tar.gz
正在解析主机 nginx.org (nginx.org)... 52.58.199.22, 3.125.197.172, 2a05:d014:edb:5702::6, ...
正在连接 nginx.org (nginx.org)|52.58.199.22|:80... 已连接。
已发出 HTTP 请求，正在等待回应... 200 OK
长度：1061461 (1.0M) [application/octet-stream]
正在保存至: “nginx-1.20.1.tar.gz.1”
100%[===================================================================================================================>] 1,061,461 670KB/s 用时 1.5s
2021-10-25 12:15:55 (670 KB/s) - 已保存 “nginx-1.20.1.tar.gz.1” [1061461/1061461])
checking for OS
+ Linux 3.10.0-862.el7.x86_64 x86_64
checking for C compiler ... found
+ using GNU C compiler
+ gcc version: 4.8.5 20150623 (Red Hat 4.8.5-44) (GCC)
省略....
nginx http uwsgi temporary files: "uwsgi_temp"
nginx http scgi temporary files: "scgi_temp"
make -f objs/Makefile
make[1]: 进入目录“/usr/local/nginx”
cc -c -pipe -O -W -Wall -Wpointer-arith -Wno-unused-parameter -Werror -g -I src/core -I src/event -I src/event/modules -I src/os/unix -I objs \
-o objs/src/core/nginx.o \
src/core/nginx.c
cc -c -pipe -O -W -Wall -Wpointer-arith -Wno-unused-parameter -Werror -g -I src/core -I src/event -I src/event/modules -I src/os/unix -I objs \
-o objs/src/core/ngx_log.o \
src/core/ngx_log.c
test -f '/usr/local/nginx/conf/nginx.conf' \
|| cp conf/nginx.conf '/usr/local/nginx/conf/nginx.conf'
cp conf/nginx.conf '/usr/local/nginx/conf/nginx.conf.default'
test -d '/usr/local/nginx/logs' \
|| mkdir -p '/usr/local/nginx/logs'
test -d '/var/log/nginx' \
|| mkdir -p '/var/log/nginx'
test -d '/usr/local/nginx/html' \
|| cp -R html '/usr/local/nginx'
test -d '/var/log/nginx' \
|| mkdir -p '/var/log/nginx'
make[1]: 离开目录“/usr/src/nginx”
Created symlink from /etc/systemd/system/multi-user.target.wants/nginx.service to /usr/lib/systemd/system/nginx.service.
[root@localhost ~]# systemctl start nginx
[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# ss -antl
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 128 *:80 *:*
LISTEN 0 128 *:22 *:*
LISTEN 0 100 127.0.0.1:25 *:*
LISTEN 0 128 :::22 :::*
LISTEN 0 100 ::1:25 :::*
经过测试，想要直接使用nginx命令 需要在终端手动读取配置
//配置文件脚本里已经写好，这里直接读取就可以 [root@localhost ~]# source /etc/profile.d/nginx.sh [root@localhost ~]# which nginx /usr/local/nginx/sbin/nginx [root@localhost ~]# nginx -V nginx version: nginx/1.20.1 built by gcc 4.8.5 20150623 (Red Hat 4.8.5-44) (GCC) built with OpenSSL 1.0.2k-fips 26 Jan 2017 TLS SNI support enabled configure arguments: --prefix=/usr/local/nginx --user=nginx --group=nginx --with-debug --with-http_ssl_module --with-http_realip_module --with-http_image_filter_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_stub_status_module --http-log-path=/var/log/nginx/access.log --error-log-path=/var/log/nginx/error.log
或者用source nginx.sh执行脚本
[root@localhost ~]# source nginx.sh //这种方式不需要手动读取环境变量
