查看nginx版本
[root@localhost ~]# nginx -v (注意是小v) nginx version: nginx/1.12.0
查看nginx安装了哪些模块
[root@localhost ~]# nginx -V(注意是大V) nginx version: nginx/1.12.0 built by gcc 4.8.5 20150623 (Red Hat 4.8.5-11) (GCC) built with OpenSSL 1.0.1e-fips 11 Feb 2013 TLS SNI support enabled configure arguments: --user=www --group=www --prefix=/usr/local/nginx --with-http_ssl_module --with-http_stub_status_module --with-threads
可以格式化后显示
[root@localhost ~]# nginx -V 2>&1 | sed "s/\s\+--/\n --/g" nginx version: nginx/1.12.0 built by gcc 4.8.5 20150623 (Red Hat 4.8.5-11) (GCC) built with OpenSSL 1.0.1e-fips 11 Feb 2013 TLS SNI support enabled configure arguments: --user=www --group=www --prefix=/usr/local/nginx --with-http_ssl_module --with-http_stub_status_module --with-threads