Ubuntu 14.04中缺少nginx php5-fpm conf文件

我在nginx上的php5-fpm conf可以正常工作.但是昨天,它不起作用.给了php5-fpm -t命令后,出现以下错误：

[05-Jul-2016 08:59:32] ERROR: failed to open configuration file '/etc/php5/fpm/php-fpm.conf': No such file or directory (2)
[05-Jul-2016 08:59:32] ERROR: failed to load configuration file '/etc/php5/fpm/php-fpm.conf'
[05-Jul-2016 08:59:32] ERROR: FPM initialization failed

在/etc/php5/fpm/conf.d和/etc/php5/fpm/pool.d上发出ls命令后,没有文件.

我的Nginx conf：

server {
listen 80 default_server;
listen [::]:80 default_server ipv6only=on;

root /var/www/html;
index index.html index.htm index.php;

server_name localhost;

location / {
        try_files $uri $uri/ /index.php?$query_string;
        #try_files $uri $uri/ =404;
        #try_files $uri $uri/ /index.php$is_args$args;
}
error_page 404 /404.html;

error_page 500 502 503 504 /50x.html;
location = /50x.html {
        root /var/www/html;
}


location ~ .php${
        try_files $uri =404;
        fastcgi_split_path_info ^(.+.php)(/.+)$;
        fastcgi_pass unix:/var/run/php5-fpm.sock;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
}
}