Swap file ".nginx.conf.swp" already exists!问题

问题:

E325: ATTENTION
Found a swap file by the name ".nginx.conf.swp"
          owned by: root   dated: Sat Aug 15 06:38:55 2020
         file name: /etc/nginx/nginx.conf
          modified: YES
         user name: root   host name: image.meiduo.site
        process ID: 3756
While opening file "nginx.conf"
             dated: Thu Oct  3 13:15:21 2019

(1) Another program may be editing the same file.  If this is the case,
    be careful not to end up with two different instances of the same
    file when making changes.  Quit, or continue with caution.
(2) An edit session for this file crashed.
    If this is the case, use ":recover" or "vim -r nginx.conf"
    to recover the changes (see ":help recovery").
    If you did this already, delete the swap file ".nginx.conf.swp"
    to avoid this message.

Swap file ".nginx.conf.swp" already exists!
[O]pen Read-Only, (E)dit anyway, (R)ecover, (D)elete it, (Q)uit, (A)bort:

解决方法:

# 第一步:进入目录
cd 文件目录
# 第二步:参看所有文件,包括隐藏文件
ll -a

第三步:删除.nginx.conf.swp文件